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    • 专利摘要:
    The present invention relates to a sports shooting target made of a biodegradable material, the target having by a rotational axis (z) and attachment means (2, 4’, 4’’, 10, 11, 15) for releasable attachment to a launching device, where the target is provided with trajectory stabilizing means that are configured to stabilize the trajectory of the target by gyro effect caused by rotation about said rotational axis (z) which stabilizing means further function as propelling means that cause forward movement of the target along its trajectory due to the rotation about said rotational axis (z), when the target is rotating, where said stabilizing means comprises a fan comprising fan blades (3’, 3’’) that rotates in unison with the target and, when the target rotates, such that the stabilizing means both provides said stabilizing gyro effect and said forward propulsion of the target along a chosen trajectory; where the sports shooting target comprises a hub portion (2, 15) configured for releasable attachment to a corresponding portion of a launching device, which portion of the launching device, when the target is attached to it, can rotate said target and release it from the launching device, when a desired terminal rotational speed has been reached; and the hub portion (2) is provided with an inner circumferential surface (4’, 10, 11) facilitating release of the target from said portion of the launching device and defining an inner space (8); and the target comprises a plurality of concentric ring members (5, 6, 7; 12, 13, 14) arranged about the rotational axis (z) of the target at different distances (r5, r6, r7) from the rotational axis (z) and outside the hub portion (2); and the stabilizing means comprises first fan blades (7’) that extend radially from the hub portion (2) to the ring member (7) provided at the largest distance (r7) from the rotational axis (z) and second fan blades (7’’) that extend radially between two adjacent ring members. The invention further relates to an apparatus configured to launch the sports shooting target according to the invention.
    公开号:DK201900739A1
    申请号:DKP201900739
    申请日:2019-06-19
    公开日:2021-02-25
    发明作者:Larsen Jens
    申请人:Gyroskeet Ivs；
    IPC主号:
    专利说明:

    DK 2019 00739 A1SPORTS SHOOTING TARGET AND CORRESPONDING LAUNCHING APPARATUS
    TECHNICAL FIELD The present invention relates to the field of sports shooting targets and apparatuses for launching such targets and more particularly to improvements of targets and apparatuses with the aim to reduce environmental hazards caused by the targets and to improving trajectory stability of targets after launching from launching apparatuses.
    BACKGROUND OF THE INVENTION Prior art sports shooting targets, such as clay pigeons, are made of limestone and a binding material, such as pitch, bitumen or another organic material and weighs typically about 105 to 110 grams. The binder materials may contain components that can pose a potential risk to the environment. The binder material may contain a mixture of different hydrocarbons called polycyclic aromatic hydrocarbons (PAH) and some of these are known to be toxic. Prior art launching apparatuses comprise a throwing arm that can be rotated about a rotational axis and onto which a sports shooting target is provided from a supply container at a distance from the rotational axis. Longitudinally opposite the rotational axis, the throwing arm has a free end portion from which a target provided on the arm will be launched due to the centrifugal force exerted on the target by the rotation of the throwing arm. Traditional sports shooting targets are not provided with stabilizing means that act to stabilize the trajectory or trajectory of the target after it has left the launching apparatus. The lack of stabilizing means in the prior art target may not pose a serious problem for targets of relatively heavy weights, but for very light weight targets, the trajectory will be rather unstable and unpredictable. The use of traditional clay pigeons is prohibited in many locations in the world due to the risk — of polluting the environment. Especially, in the vicinity of ground water drillings, the use of traditional clay pigeons is widely prohibited. There is a current tendency that the prohibition of the use of traditional clay pigeons may be generally implemented during the coming years. Hence there is a need to provide a replacement of the traditional clay pigeon that solves the environmental issues, but still make traditional clay pigeon shooting possible, substantially without altering the behavior of the new kind of sports shooting target after launching from a launching apparatus. The new kind of sports shooting target should thus be able to offer a hunter or sports shooter the same experience as the traditional type of clay pigeon does. 1
    DK 2019 00739 A1 There is hence a need for a sports shooting target and corresponding launching apparatus that will solve both the environmental issues addressed above and provide a more stable and predictable trajectory of the target.
    OBJECTIVE OF THE PRESENT INVENTION An objective of the present invention is to provide a lightweight sports shooting target that despise its low weight has improved trajectory stability after launching. A further objective of the present invention is to provide a sports shooting target that reduces or even entirely eliminates the risk of polluting the environments.
    A further objective of the present invention is to provide a sports shooting target that is cheap to manufacture, especially much cheaper than traditional clay pigeons.
    A further objective of the invention is to provide a very light weight sports shooting target, thereby rendering it possible to ship large quantities of targets throughout the world at a very low prize.
    — A further objective of the present invention is to provide a sports shooting target with enhanced visibility after launching.
    DISCLOSURE OF THE INVENTION The above and further objects and advantages are according to a first aspect of the invention obtained by a sports shooting target according to the invention.
    The present invention provides an environmentally advantageous alternative to traditional clay pigeons. The sports shooting targets of the invention moves substantially in the same manner as traditional clay pigeons, such that a sports shooter will have substantially the same experience and pleasure when using the sports shooting targets of the invention as when using traditional clay pigeons.
    — Due to their low weight, the sports shooting targets of the invention can be manufactured at a central location, where they can be cheaply manufactured, and distributed throughout the world from this centralized location.
    An important feature of the sports shooting target according to the first aspect of the present invention is that its weight is very much reduced compared to traditional sports shooting targets. The weight of such prior art targets is typically in the range 100 to 110 grams, whereas 2
    DK 2019 00739 A1 the sports shooting target according to the present invention typically weighs less than 10 grams, typically in the range 6 to 8 grams.
    Another important feature of the sports shooting target according to the first aspect of the present invention is that it is configured to obtain maximum directional stability, such that it — despise the very low weight of the target — is able to follow a stable trajectory in space after being launched from a launching apparatus.
    According to the invention, this stabilizing effect is obtained by gyroscopic means.
    In an embodiment of the sports shooting target according to the invention, a combined gyro- stabilizing effect and a forward propelling effect is obtained by configuring the target as a circular object that after launching rotates about its rotational axis — whereby the gyro- stabilizing effect is obtained — and where the circular object is provided with fan means that, when rotating about the rotational axis of the target, propels the target in a desired forward direction along a trajectory originating from a launching apparatus that provides the necessary rotation of the target that ensures the gyroscopic effect and the forward propulsion of the target along the trajectory.
    Different embodiments of targets according to the invention are shown and described below.
    In the following, the term “propelling means” and “propelling effect” are used repeatedly.
    By “propelling means” is meant means (elements, members, etc.) provided as a part of the sports shooting target according to the first aspect of the invention, and which propelling means functions to move the target along a trajectory in the air after the target has been launched by the apparatus according to the second aspect of the invention.
    The propelling effect is the forward moving effect caused by the propelling means along its trajectory.
    Still another important feature of the sports shooting target according to the first aspect of the present invention is that it is made of a biodegradable material in order to reduce or eliminate environmental hazards.
    The above and further objects and advantages are in a first aspect of the invention obtained by a sports shooting target made of a biodegradable material, the target having a rotational axis z and attachment means for releasable attachment to a launching device, where the target is provided with trajectory stabilizing means that are configured to stabilize the trajectory of the target by gyro effect caused by rotation about the rotational axis z which stabilizing means further function as propelling means that cause forward movement of the target along its trajectory due to the rotation about the rotational axis z, when the target is rotating, where the stabilizing means comprises a fan comprising fan blades that rotates in unison with the target 3
    DK 2019 00739 A1 and, when the target rotates, such that the stabilizing means both provides the stabilizing gyro effect and the forward propulsion of the target along a chosen trajectory; where: — the sports shooting target comprises a hub portion configured for releasable attachment to a corresponding portion of a launching device, which portion of the launching device, when the target is attached to it, can rotate the target and release it from the launching device, when a desired terminal rotational speed has been reached; and — the hub portion is provided with an inner circumferential surface facilitating release of the target from the portion of the launching device and defining an inner space; — the target comprises a plurality of concentric ring members arranged about the rotational axis z of the target at different distances from the rotational axis z and outside the hub portion; and — the stabilizing means comprises first fan blades that extend radially from the hub portion to the ring member provided at the largest distance from the rotational axis z and second fan blades that extend radially between two adjacent ring members.
    In an embodiment of the first aspect, the inner circumferential surface of the hub portion is conical.
    In an embodiment of the first aspect, that hub portion is symmetrical with respect to the longitudinal axis z of the target, whereby the advantageous effect is obtained that the target can be placed on the launching head of the launching apparatus in two ways (there is not a specific front and rear surface of the target in this embodiment), which is a great advantage when a plurality of targets hast to loaded into a target container on the launching apparatus.
    In an embodiment of the first aspect, the ring members have cross-sectional shapes comprising curved first and second side faces where the edge portions, where the first and second side faces meet at a substantially sharp edge portion, thereby optimizing the aero- dynamic properties of the respective ring members.
    In an embodiment of the first aspect, the second fan blades are provided between the outermost ring member and the adjacent ring member.
    In an embodiment of the first aspect, the inclination angle of the fan blades relative to the (x, vy) plane of the target increases towards the hub portion.
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    DK 2019 00739 A1 In an embodiment of the first aspect, the biodegradable material is com starch-based plastics, wood or other biological fiber materials. In an embodiment of the first aspect, the weight of the target is below 50 grams, preferably below 20 grams and still more preferably below 10 grams.
    — Inan embodiment of the first aspect, the angle relative to the (x, y) plane of the target increases towards the hub portion. According to a second aspect of the invention there is provided a launching apparatus configured for launching the target according to the first aspect, which apparatus comprises a launching head configured such that the hub portion of the target can be positioned on the launching head, where the launching head comprises a plurality of pivotally mounted retaining claw members that are configured to be able to pivot between a first state, in which the claw members retain the hub portion of the target to the launching head and a second state, in which the claw members release the hub portion of the target from the launching head, where the apparatus is provided with a longitudinally displaceable shaft member that is functionally connected to the claw members such that a longitudinal displacement of the shaft member results a pivotal movement of the claw members, whereby a longitudinal displacement of the shaft member from a first longitudinal position of the shaft member to a second longitudinal position of the shaft member makes the claw members pivot between the first state and the state and/or vice versa, where the apparatus is provided with shaft member operating means configured to displace the shaft member between the first and second longitudinal positions and launching head rotating means configured to rotate the launching head and to accelerate the launching head from substantially zero retational speed to a maximum rotational speed, at which maximum rotational speed of the launching head, the hub portion of the target is released from the launchnig head.
    In an embodiment of the second aspect, the apparatus comprises sensor and control means that automatically releases the target from the launching head, when the maximum rotational speed of the launching head is obtained.
    In an embodiment of the second aspect, the apparatus is provided with one or more containers for accommodation a plurality of targets and means for automatically supplying the launching head with one of these targets at a time from the one or more containers.
    In an embodiment of the second aspect, the pivotal movement of the retaining claw members is obtained by engagement of a disc-shaped member that is fixedly attached to the longitudinal 5
    DK 2019 00739 A1 shaft member in the launching head and a correspondingly shaped recess in the claw members, and where a curved portion of the claw members are in contact with an inner circumferential surface of the launching head, such that when the longitudinal shaft member is displaced in the positive z-direction, the claw members are forced to pivot into the state where they retain the hub portion of the target to the launching head, and when the longitudinal shaft member is displaced in the negative z-direction, the claw members are forced to pivot into the state where they release the hub portion of the target from the launching head.
    In an embodiment of the second aspect, the shaft member operating means are electro- mechanical means. In an embodiment of the second aspect, the shaft member operating means are electro- magnetic means. In an embodiment of the second aspect, the apparatus is congtained in a hand-held housing provided with a trigger means configured to manually release the target from the launching head.
    BRIEF DESCRIPTION OF THE DRAWINGS Further benefits and advantages of the present invention will become apparent after reading the detailed description of non-limiting exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein figure 1 shows a schematic perspective view of a first embodiment of a sports shooting target according to the invention seen from above: figure 2 shows a schematic perspective view of the first embodiment of a sports shooting target according to the invention seen from below: figure 3 shown a schematic plane view of the first embodiment of the sports shooting target according to the invention seen from above; figure 4 shows a schematic cross-sectional view of a second embodiment of the sports shooting target according to the invention; figure 5 shows a schematic view illustrating a third embodiment of the target according to the invention together with a corresponding launching head of a launching apparatus according to an embodiment of the invention; 6
    DK 2019 00739 A1 figure 6 shows a launching head according to an embodiment of the invention configured to interact with the sports shooting target according to the first and second embodiments of targets shown in figures 1, 2 and 3; figure 7 shows schematic views of the various main parts of the launching head shown in figure
    6 figure 8 shows a second embodiment of a launching head according to the invention configured to interact with the second and third embodiments of the target according to the invention shown in figures 4 and 5; figure 9 shows a schematic plane view of a portion of a target according to a fourth embodiment of the target according to the invention; figure 10 shows a schematic representation of a second embodiment of a launching head according to the invention; figure 11 shows a schematic side view of a hand-held version of a launching device according to the invention;
    figure 12 shows a schematic view of a first embodiment of a launching apparatus comprising operating means configured to operate the launching head between a state, in which the target is attached to the launching head and a state, in which the target | released from the launching head; figure 13 shows a schematic side view of a launching apparatus according to an embodiment of the invention; figure 14 shows a schematic representation of a top view of an embodiment of a launching apparatus according to the invention; figure 15 shows a schematic view of a second embodiment of operating means configured to operate the launching head between a state, in which the target is attached to the launching head and a state, in which the target | released from the launching head; figure 16 shows a schematic view of a third embodiment of operating means configured to operate the launching head between a state, in which the target is attached to the launching head and a state, in which the target | released from the launching head;
    7
    DK 2019 00739 A1 figure 17 shows a schematic view of a fourth embodiment of operating means configured to operate the launching head between a state, in which the target is attached to the launching head and a state, in which the target | released from the launching head; figure 18 shows a schematic view of a fifth embodiment of operating means configured to operate the launching head between a state, in which the target is attached to the launching head and a state, in which the target | released from the launching head; and figure 19(a) and 19(b) shows a schematic view of a fourth embodiment shown in figure 17 embodiment of operating means configured to operate the launching head between a state, in which the target is attached to the launching head and a state, in which the target | released from the launching head, shown in the two states of the operation means.
    DETAILED DESCRIPTION OF THE INVENTION The principles of the invention will be illustrated by various embodiments hereof. It is however understood that a person skilled in the art may conceive other embodiments than those actually shown and described in the detailed description of the invention and that the scope of the invention is defined by the independent claims.
    With reference to figures 1, 2 and 3 there is shown a schematic representation of a sports shooting target (in the following simply referred to as a “target’) according to an embodiment of the invention generally indicated by reference numeral 1.
    The target is defined by a rotational or longitudinal axis (z) and extends generally in and adjacent to the (x, y) plane as shown in figure 1. In this embodiment, the target comprises three concentric ring members 5, 6, 7 encompassing a central hub portion 2 surrounding a central space 8. In this embodiment, the hub portion 2 has an inner circumferential surface 4’ of such a shape that it fits to a corresponding portion of the launching head of a launching device that will be described in detail in the following.
    Radially extending from the hub portion 2, the target comprises a plurality of trajectory stabilizing and propelling means that together with the ring members 5, 6 and 7 are configured to stabilize the trajectory of the target by gyro effect caused by rotation about said rotational axis z, which stabilizing means further act as propelling means that cause forward movement of the target along its trajectory due to the rotation of the target about the rotational axis z. In the embodiments of the target according to the invention shown in figures 1, 2, 3, 5 and 9 the stabilizing and propelling means comprises a fan comprising fan blades 3’, 3” that rotate in unison with the target, such that when the target rotates, the stabilizing and propelling means 8
    DK 2019 00739 A1 both provides the stabilizing gyro effect and the forward propulsion/motion of the target along a chosen trajectory. The target according to the embodiments shown in figures 1, 2 and 3 comprises a plurality of concentric ring members 5, 6, 7 arranged about the rotational axis z of the target at different distances rs, rs, r7 (c.f. figure 3) from the rotational axis z and outside the hub portion 2. In figures 1, 2 and 3, three such ring members are shown, but it is understood that other numbers of ring members could alternatively be used within the scope of the present invention. In the embodiment shown in figures 1, 2 and 3, the stabilizing and propelling means comprises three first fan blades (3) that extend radially from the hub portion 2 to the ring member 7 provided at the largest distance (r7) from the rotational axis z as well as three second fan blades 7” that extend radially between the outermost two adjacent ring members 6 and 7. It is however understood that other numbers and placements of such fan blades would also fall within the scope of the present invention.
    The prime effect of the first fan blades 3' is to propel the target, i.e. to move it along its trajectory after launching from the launching apparatus. The prime effect of the second fan blades 3” is to add strength and rigidity to the structure of the target at those portions of the target, where the centrifugal forces acting on the structure are the largest. The gyro stabilizing effect is obtained due to the rotation of the target about the rotational axis z in combination with the moment of inertia of the structure of the target. The presence of the ring members enhances visibility of the target, when it is moving along its trajectory through the air after being launched by the launching apparatus.
    In order to obtain the largest angular momentum — and hence the optimal gyro stabilizing effect — as much as possible of the total mass of the target should be concentrated furthest away from the rotational axis z of the target. This is according to the invention partly obtained by the provision of the second fan blades 3” between the outermost two circular members 6 and 7. According to the invention, the distance between adjacent ring members need not to be substantially identical as in the shown embodiments. In order to increase the moment of inertia and hence the gyro stabilizing effect, ring members may be placed closest to each other towards the outermost ring member.
    With reference to figures 4(a) and 4(b) there is shown a cross sectional view of a second embodiment of a target according to the present invention generally indicated by reference numeral 9. In contrast to the embodiment of the target shown in figures 1, 2 and 3, the 9
    DK 2019 00739 A1 embodiment shown in figure 4 can be attached to the launching head of a launching apparatus from either side as indicated in figure 4 by the arrows B and C, which is a great advantage for instance when a plurality of targets are to be loaded into target containers on a launching apparatus. In the embodiment of the target shown in figure 4, the target comprises three concentric ring members 12, 13, 14 and a hub portion 15 provided with inwardly sloping surfaces 10 and 11 configured for releasable attachment to a corresponding portion of a launching head, c.f. figure 8. In the shown embodiment, the hub portion 15 is thus substantially symmetrical about the (x, y)-plane of the target.
    In order to reduce resistance against the movement of the target along its trajectory by the air through which the target is moving, it is important to design the ring-shaped members 12, 13 and 14 (as well as those of the first embodiment designated be reference numerals 5, 6 and 7) optimally. It has been found that the cross-sectional shape shown in figure 4(b) yields a good result in that the ring-shaped members by having this cross-sectional shape only impedes the movement of the target along its trajectory minimally. In the shown embodiment, the ring- shaped members comprise curved first and second side faces 121 and 122, which side faces meet at either ends 123 and 124, respectively, in the z-direction, such that sharp edge portions at the upper and lower edges of the ring-shaped members are formed. The aero-dynamic properties of the ring-shaped members are good due to this shape of the ring-shaped members.
    — With reference to figure 5 there is shown the second embodiment of the target according to the invention in some further detail together with its placement on a launching head according to an embodiment of the invention. Figure 5(a) is similar to figure 4(a). Figure 5(b) shows a simple schematic representation of this target placed on a correspondingly configurated launching head according to the invention that will be described in greater detail below.
    The launching head basically comprises a body portion 28 with an inclined (conical) nose section 27 comprising an inclined (conical) circumferential outer surface, the inclination of which corresponds to the inclination of the inwardly sloping surfaces 10 and 11 of the hub portion 15 of the second embodiment 9 of the target. Pivotally mounted in the launching head are a plurality of restraining claw members 16 configured to retain the target to the launching head during the angular acceleration of the target prior to release from the launching head. The functioning of the launching head will be described in greater detail below in connection with figures 6, 7 and 8.
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    DK 2019 00739 A1 Figure 5(c) and (d) describes further details of the second embodiment of a target according to the invention.
    Figure 5(c) indicates that the inclination angle of the fan blades relative to the (x, y) plane of the target decreases from the hub portion 15 towards the outermost ring member 14 of the target.
    Further, in the embodiment of the target according to the invention shown in figure 5, second fan blades 3” extends between two adjacent ring members 12 and 13, and 13 and 14, respectively.
    Other configurations of fan blades are also within the scope of the invention, and one example is described below in connection with figure 8. The reduced inclination angle of the fan blades in the second embodiment of the target is also applied in the first embodiment of the target shown in figures 1, 2 and 3. By decreasing the inclination angle of the fan blades towards the outer ring member it is obtained that substantially the same amount of air is displaced by the fan blades at any distance from the hub portion.
    With reference to figures 6, 7 and 8 there are described two different embodiments of a launching head configured to cooperate with the target according to the invention.
    The first embodiment that is described in figures 6 and 7 is configured for launching the embodiment of the target shown in figures 1, 2 and 3 and the second embodiment of the launching head shown in figure 8 is configured for launching the embodiment of the target shown in figures 4 and 5. The launching head shown in figures 6(a) and (b) comprises a body part 28 configured for attachment to a launching apparatus to be described in the following, which body part 28 comprises a nose section 27 having a conical outer circumferential surface 27’ configured to correspond to the inner circumferential surface of the hub of the target.
    At the top, the launching head is terminated by a cab member 26. In the cab member 26 there are provided a plurality of channels 29 having inwardly extending circumferential curved channel surfaces 25, the curvature of which corresponds substantially to the curvature of the curved portion 24 of the upper portion 35 of the claw member 16 as shown in figure 7. At certain angular intervals about the z-axis (the rotational axis), the launching head is provided with restraining claw members 16 mounted such that they can undergo a pivotal movement in the launching head as indicated by arrow A in figure 6(a). Thus, the claw members 16 can pivot between a radially extended position of the upper portion 35 of the claw member 16 (see figure 7(b)) as shown in figure 6(a), where they hold the target in firm connection with the launching head, and a radially retracted position of the upper portion 35 of the claw member 16 as shown in figure 6(b), where they release the target from the launching head. 11
    DK 2019 00739 A1 The pivotal movement of the claw members 16 is obtained by longitudinal displacement of the shaft 22 as indicated by arrow B in figure 6(a). At one longitudinal end of the shaft 22 there is attached a disc-shaped member 19 radially terminated by a rounded circumferential side portion 20. This side portion 20 is in engagement with a similarly shaped portion 21 of the claw member 16 and when the shaft 22 is longitudinally displaced (arrow B), the claw member 16 will undergo the pivotal movement depicted in figures 6(a) and 6(b). Specifically, when the claw member 16 is in the retracted position shown in figure 6(b) and the shaft 22 is displaced upwards (in the positive z-direction), the curved portion 24 of the claw member 16 will get in contact with the similarly curved inner surface 25 of the channel 29 in the launching head, and the claw member 16 will be forced radially outward into the extended position shown in figure 6(a). During this pivotal movement of the claw member 16, the claw member will pivot around the curved portion 31 (see figure 7) that is in contact with the inner portion 27” of the nose section 27 of the launching head.
    With reference to figure 7 there is shown the main components of the launching head according to the embodiment shown in figure 6. Figure 7(a) shows a side view of the cab 26, and one of the channels 25 accommodating the top portions 23, 35 of the claw members 16 is indicated in broken line.
    The cab comprises a base portion 30 formed for insertion into the inner cavity 38 of the nose section 27 of the launching head.
    Figure 7(b) shows the claw member 16 used in this embodiment of the launching head.
    The claw member 16 comprises an upper section 35 provided with a pointed end portion 23. A lower section 32 of the claw member 16 is connected to the upper section 35 via an intermediate portion with a curved outer portion 31 and a recess 21 formed for engagement with the rounded side portions 20 of the disc-shaped member 19 attached to the shaft 22. As shown in figures 7(c), (d) and (e), two thin guide disc 36 provided with recesses 37 formed to accommodate the respective claw members 16 is placed on either, opposite longitudinal faces of the disc-shaped member 19. The guide discs 36 and the disc-shaped member 19 are fixedly attached to the shaft 22. Figure 7(f) shows schematically the body part 28 of the launching head comprising the nose section 27 with the conical outer circumferential surface 27’. An inner cavity 38 is defined by the body portion to accommodate the various elements described in figures 7(a) through 7(e). With reference to figure 8 there is shown a second embodiment of a launching head according to the invention configured to interact with the second and third embodiments of the target according to the invention shown in figures 4 and 5. The second embodiment of the launching 12
    DK 2019 00739 A1 head corresponds basically to the first embodiment hereof except for the configuration of the claw members 16’ that comprise a side portion 42 configured to correspond to the inclined portions 10 or 11 of the embodiment of the target shown in figures 4 and 5. In the cab 39, first channels portions 40 are formed corresponding to the positions of the claw members 16’ and second channel portions 43 are also provided in the body part 28 at positions corresponding to those of the first channel portions 40. Throughout the description, three claw members 16, 16’ are shown, but it is understood that other numbers of claw members could be used without departing from the scope of the invention.
    With reference to figure 9 there is shown a schematic plane view of a portion of a target according to a fourth embodiment of the target according to the invention. In this embodiment, a plurality of second fan blades 3” are provided between the outermost ring member 7 and the adjacent ring member 6. It is however noted that the number and positioning of the second fan blades 3” — and also between which of the ring members they are inserted - can be chosen as desired, without departing from the scope of the invention. With reference to figure 10 there is shown a schematic representation of a second embodiment of a launching head according to the invention. The launching head according to this embodiment is configured to launch a target according to the first embodiment shown in figures 1, 2 and 3, but it is understood that the features specifically described in this launching head and that are added to those of the first embodiment of a launching head could also be incorporated in a launching head configured to launch a target according to the second embodiment shown in figures 4 and 5. The second embodiment shown in figure 10 differs from the first embodiment of the launching head in that the retaining claw members 16 are provided with a toothed section 43 in the curved — portion 31 configured to engage with a corresponding toothed section 44 on the inner wall 46 of the body part 49 of the launching head. Furthermore, between the the disc shaped member 47 provided on the lower face of the disc-shaped member 48 and the body part 49 of the launching head there is provided a spring member 45 that forces the disc shaped members 47 and 48 upwards towards the retaining state of the claw member 16 as shown in figure 10(a).
    In figure 10(b), the shaft 50 has drawn the claw member 16 into the state in which the target is released from the launching head. The launching head according to the invention can be used in many differently designed launching apparatuses. In the following some such apparatuses are briefly described, but 13
    DK 2019 00739 A1 many other configurations of such apparatuses could be used together with the launching head of the invention to launch targets according to the invention.
    Basic requirements for such launching apparatuses are that they are provided with means configured to (1) rotate the launching head, and hence the target attached hereto, about the rotational axis z of the launching head/target, thereby increasing the rotational speed of the launching head and target from zero to a maximum rotational speed that typically will be in the order of 15.000 to 20.000 rpm; and (2) to provide the longitudinal displacements of the shaft 22 (or similar means) that are required to bring the claw members 16, 16’ from a state, in which they retain the target to the launching head to a state, in which they release the target from the launching head and vice versa.
    A suitable launching apparatus should also preferably be provided with means for monitoring the rotational speed of the launching head and target and, when the desired maximum rotational speed is obtained, to operate the claw members to release the target from the launching head.
    With reference to figure 11 there is shown a schematic side view of a hand-held version of a launching apparatus according to the invention generally indicated by reference numeral 51. The hand-held launching apparatus basically comprises a launching head 52 as described above mounted within a protecting screen 53 that encompasses the target 54 and that during use protects the user against the rapidly rotating target.
    The launching head is in this embodiment mounted directly on the drive shaft of the drive motor 55, which drive shaft is hollow such that the longitudinal shaft that operated the retaining claw members in the launching head is passed through the hollow drive shaft of the motor 55. Longitudinally opposite the launching head 52 there is provided a mechanism 56 configured to displace the longitudinal shaft that operated the retaining claw members as described in the preceding paragraphs.
    This mechanism 56 is coupled to the trigger 57 that the user operates in order to open and close the retaining claw members in the launching head 52. The apparatus is provided with a handle portion 58. With reference to figure 12 there is shown a schematic view of a first embodiment of a launching apparatus generally indicated by reference numeral 59 comprising operating means configured to operate the launching head between a state, in which the target is attached to the launching head and a state, in which the target is released from the launching head.
    The apparatus shown in figure 12 basically comprises the launching head 60 provided on the drive motor 61 configured to rotate the launching head 60, and the displacement mechanism 63 that operates the longitudinal shaft operating the claw members in the launching head.
    In this embodiment, the displacement mechanism 63 is an electro-mechanical mechanism 14
    DK 2019 00739 A1 comprising a motor means 631 upon the drive shaft 632 of which there is provided an excentric member 633 that converts the rotational movement of the drive shaft 632 to the desired translatory displacement of the longitudinal shaft that operated the claw members in the launching head. The launching head 60, the motor 61 and the operating mechanism 63 are accommodated within a common housing 62 that is pivotally mounted about a pivot axis 621 such that a pivot motor 65 can pivot the housing 62 about the axis 621 as indicated schematically by 64 and thereby determine the elevation angle, at which the target leaves the launching apparatus, when the target is released from the launching head.
    With reference to figure 13 there is shown a schematic side view of a launching apparatus according to an embodiment of the invention generally indicated by reference numeral 66. The figure shows the launching head 70 mounted at one longitudinal end of the housing 71 that contains the rotational and operational means required for operating the launching head (such as, but not limited to, those described above). The apparatus can support a stack 67 of targets and a loading mechanism 68 loads one target at a time into a position directly above (as seen in the figure) the launching head and then releases the target downwardly onto the launching head. The launching head is surrounded by a protective screen 69 as also mentioned in connection with the hand-held apparatus described above. With reference to figure 14 there is shown a schematic representation of a top view of an embodiment of a launching apparatus according to the invention generally indicated by reference numeral 72. This embodiment of the apparatus according to the invention comprises two separate sections 73 and 74, each provided with four containers 76 provided on a rotatable structure 75. When a target is provided on one of the launching heads 77 of one section 74 and accelerated to obtain the desired maximum rotational speed at which it can be released form the launching head, a loading process is performed at the other section 73, thereby increasing the rate at which targets can be launched from the apparatus. The following figures 15 through 19 discloses various electro-magnetic mechanisms that can be applied according to the invention to provide the necessary longitudinal displacement of the shaft that operates the retaining claw members 16, 16’ as well as the rotational movement of the launching head. It is however emphasized that the shown embodiments are only examples of such mechanisms, and that other mechanisms having a similar effect may be used in the launching apparatus according to the invention. In figures 15 through 19, only the basic functional elements of the respective mechanisms configured to operate the retaining claw members are described. 15
    DK 2019 00739 A1 With reference to figure 15 there is shown a schematic view of a second embodiment of a launching apparatus generally indicated by reference numeral 78. The shaft 82 that operates the claw members is at the longitudinal end opposite the launching head provided with a body 81 that can be attracted by a magnetic force. Below the body 81 (as seen in figure 15) there is provided an electro-magnetic structure comprising a ring coil 79 surrounding an anchor member 80. When an electric current is passed through the coil 79, the anchor 80 attracts the body 81 and hence displaces the shaft 82 against the force exerted by the spring 45. When the electric current is turned off, the spring forces the shaft 82 back to its upper position in which the claw members retain a target to the launching head.
    With reference to figure 16 there is shown a schematic view of a third embodiment of a launching apparatus generally indicated by reference numeral 83. This embodiment comprises two ring coils 84 and 85 surrounding a displaceable anchor (or "hammer”) longitudinally displaceably mounted within the coils and loaded on either longitudinal side of the anchor by a spring 87.
    — With reference to figure 17 there is shown a fourth embodiment of operating means configured to operate the launching head generally indicated by reference numeral 90 between a state, in which the target is attached to the launching head and a state, in which the target | released from the launching head. The launching head is provided with claw members 16, a disc-shaped body 19 and a spring 45 as described above. The claw members are operated by means of a longitudinal displacement of the shaft member 91 as also described previously. The launching head 95 is fixedly provided on a hollow longitudinally extending driving shaft 94 of a motor 93 that rotates the launching head. Through the hollow shaft 94 of the motor 93 there is passed the operating shaft 91 of the claw members. The motor is fixed to a base plate 92 that is attached to a portion of the launching apparatus. A claw member operating bearing 96 of a material that can be attracted by a magnetic field is fixedly provided at the lower (as seen in the figures) longitudinal end of the shaft member 91.
    The claw member operating bearing 96, and hence the shaft member 91, will undergo longitudinal displacement when acted upon by a magnetic field of appropriate strength and direction. This magnetic field is provided by the coils 97 and 99 via the respective anchors 98 and 100 that are displaceably mounted on a longitudinal rod through the coils 97 and 99, which rod is in fixed relationship to the base plate 92. The functional effect of this embodiment will be described below with reference to figures 19(a) and 19(b).
    16
    DK 2019 00739 A1 With reference to figure 18 there is shown a schematic view of a fifth embodiment of operating means generally indicated by reference numeral 101 configured to operate the launching head between a state, in which the target is attached to the launching head and a state, in which the target | released from the launching head. This embodiment differs basically from the other described electro-magnetic embodiments in that a permanent ring-shaped magnet 106 is attached to the claw member operating shaft 102 longitudinally between a first ring coil 104 and a second ring coil 105. Dependent on the direction and strength of an electric current passed through the two ring coils, the permanent magnet 106 and hence the shaft 102 will be displaced in an upward or downward direction (as seen in the figure).
    With reference to figures 19(a) and 19(b) there are shown a schematic view of the fourth embodiment shown in figure 17 of operating means configured to operate the launching head between a state, in which the target is attached to the launching head and a state, in which the target | released from the launching head. Figure 19(a) shows the state in which the the claw members are in the retracted position, in which the target is free to leave the launching head and figure 19(b) shows the state in which the claw members are in the radially outward extended position, in which the target is fixed to the launching head.
    The two anchors 98 and 100 in the respective ring coils 97 and 99 are attached to the bracket member 107 and via this to the base plate 92. Likewise, the two ring coils 97 and 99 respectively are attached via the bracket 108 to the base plate 92. When an electric current is applied to coil 97, the claw member operating bearing 96 will be displaced downwardly (as seen in figure 19(a)) with the effect that the claw members 16 will be drawn into the launching head for release of the target from the launching head. When an electric current is applied to coil 99, the claw member operating bearing 96 will be displaced upwardly (as seen in figure 19(b)) with the effect that the claw members 16 will be radially extended from the surface of the launching head and thereby retain the target to the launching head.
    Preferably, electric current should only be applied to the two coils 97 and 99 as briefly as possible in order to limit the current supply as much as possible.
    17
    权利要求:
    Claims (10)
    [1] 1. A sports shooting target made of a biodegradable material, the target having a rotational axis (z) and attachment means (2, 4’, 4”, 10, 11, 15) for releasable attachment to a launching device, where the target is provided with trajectory stabilizing means that are configured to stabilize the trajectory of the target by gyro effect caused by rotation about said rotational axis (2) which stabilizing means further function as propelling means that cause forward movement of the target along its trajectory due to the rotation about said rotational axis (z), when the target is rotating, where said stabilizing means comprises a fan comprising fan blades (3’, 3”) that rotates in unison with the target, when the target rotates, such that the stabilizing means both provides said stabilizing gyro effect and forward propulsion (movement) of the target along a chosen trajectory; where: — the sports shooting target comprises a hub portion (2, 15) configured for releasable attachment to a corresponding portion of a launching device, which portion of the launching device, when the target is attached to it, can rotate said target and release it from the launching device, when a desired terminal rotational speed has been reached; and — the hub portion (2, 15) is provided with an inner circumferential surface (4°, 10, 11) facilitating release of the target from said portion of the launching device and defining an inner space (8); — the target comprises a plurality of concentric ring members (5, 6, 7; 12, 13, 14) arranged about the rotational axis (z) of the target at different distances (rs, rs, r7) from the rotational axis (z) and outside the hub portion (2); and — the stabilizing means comprises first fan blades (3°) that extend radially from the hub portion (2, 15) to the ring member (7, 14) provided at the largest distance from the rotational axis (z) and second fan blades (3”) that extend radially between two adjacent ring members.
    [2] 2. A sports shooting target according to claim 1, where said inner circumferential surface (4) of the hub portion (2) is conical.
    [3] 3. A sports shooting target according to claim 1 or 2, where said ring members (5, 6, 7, 12, 13, 14) have cross-sectional shapes comprising curved first and second side faces (121, 122), where the first and second side faces (121, 122) meet at a substantially sharp edge portion, thereby optimizing the aero-dynamic properties of the respective ring members (5, 6, 7, 12, 13, 14).
    1
    DK 2019 00739 A1
    [4] 4. A sports shooting target according to claim 1, 2 or 3, where said second fan blades (3”) are provided between the outermost ring member (7, 14) and the adjacent ring member (6, 13).
    [5] 5. A sports shooting target according to any of the preceding claims, where the inclination angle of the fan blades relative to the (x, y) plane of the target increases towards the hub portion (2).
    [6] 6. A launching apparatus for launching the target according to any of the preceding claims 1 to 5 comprising a launching head configured such that the hub portion of the target can be positioned on the launching head, where the launching head comprises a plurality of pivotally mounted retaining claw members (16, 16’) that are configured to be able to pivot between a first state, in which the claw members (16, 16°) retain the hub portion of the target to the launching head and a second state, in which the claw members (16, 16’) release the hub portion of the target from the launching head, where the apparatus is provided with a longitudinally displaceable shaft (22) that is functionally connected to the claw members (16, 16) such that a longitudinal displacement of the shaft (22) results in said pivotal movement of the claw members (16, 167), whereby a longitudinal displacement (B) of the shaft (22) from a first longitudinal position of the shaft (22) to a second longitudinal position of the shaft makes the claw members (16, 16’) pivot between said first state and said state and/or vice versa, where the apparatus is provided with shaft operating means configured to displace the shaft (22) between said first and second longitudinal positions and launching head rotating means (55, 61) configured to rotate the launching head and to accelerate the launching head from substantially zero retational speed to a maximum rotational speed, at which maximum rotational speed of the launching head, the hub portion of the target is released from the launchnig head.
    [7] 7. A launching apparatus according to claim 6, where the apparatus comprises sensor and control means that automatically releases the target from the launching head, when said maximum rotational speed of the launching head is obtained.
    [8] 8. A launching apparatus according to claim 6 or 7, where the apparatus is provided with one or more containers for accommodation a plurality of targets and means for automatically supplying the launching head with one of these targets at a time from the one or more containers.
    [9] 9. A launching apparatus according to claim 6, 7 or 8, where said pivotal movement of the retaining claw members (16, 16’) is obtained by engagement of a disc-shaped member (19, 20) that is fixedly attached to said longitudinal shaft (22) in the launching head and a 2
    DK 2019 00739 A1 correspondingly shaped recess (21) in the claw members (16, 16°) and where a curved portion (31) of the claw members (16, 16’) are in contact with an inner circumferential surface (277) of the launching head, such that when the longitudinal shaft (22) is displaced in the positive z- direction, the claw members (16, 16’) are forced to pivot into the state where they retain the hub portion of the target to the launching head, and when the longitudinal shaft (22) is displaced in the negative z-direction, the claw members (16, 16’) are forced to pivot into the state where they release the hub portion of the target from the launching head.
    [10] 10. A launching apparatus according to any of the preceding claims 9 to 14, where the apparatus is congtained in a hand-held housing (51) provided with a trigger means (57) configured to manually release the target from the launching head. 3
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    同族专利:
    公开号 | 公开日
    AU2020294754A1|2022-01-27|
    CA3135533A1|2020-12-24|
    WO2020253923A1|2020-12-24|
    DK180391B1|2021-03-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    BE864660A|1978-03-07|1978-07-03|Peeters Louis|PROPELLER SHAPE TARGET LAUNCHING DEVICE|
    DE3445024A1|1984-12-05|1986-06-19|Millo Trumbull Conn. Bertini|Firing device for clay pigeons|
    EP3279604A1|2016-08-04|2018-02-07|Gyroskeet Holding IVS|Sports shooting target and corresponding launching device, apparatus and method|
    法律状态:
    2021-02-25| PAT| Application published|Effective date: 20201220 |
    2021-03-11| PME| Patent granted|Effective date: 20210311 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201900739A|DK180391B1|2019-06-19|2019-06-19|Sports shooting target and corresponding launching apparatus|DKPA201900739A| DK180391B1|2019-06-19|2019-06-19|Sports shooting target and corresponding launching apparatus|
    AU2020294754A| AU2020294754A1|2019-06-19|2020-04-06|Sports shooting target and corresponding launching device and apparatuses|
    CA3135533A| CA3135533A1|2019-06-19|2020-04-06|Sports shooting target and corresponding launching device and apparatuses|
    PCT/DK2020/000086| WO2020253923A1|2019-06-19|2020-04-06|Sports shooting target and corresponding launching device and apparatuses|
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