澳大利亚专利AU2013216663A1 An Improved Handle and Lock Assembly

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专利摘要:
Abstract The present invention relates to a handle and lock assembly which includes a support base, a handle and a shaft. The support base is capable of being fitted to an object. The handle is mounted on and rotatable about the support base. The handle includes a bore for receiving a 5 lock assembly which includes a lock cylinder and a clutching mechanism. The shaft extends from the lock assembly for connection with a latching mechanism. The clutching mechanism is capable of causing the lock assembly to directly or indirectly engage with the handle when the lock cylinder is in an unlocked position. The clutching mechanism is also capable of enabling the handle to rotate independently of the lock assembly when the lock cylinder is 1o turned through a predetermined angle to a locked position. Is-I a0 cP '1*
公开号:AU2013216663A1
申请号:U2013216663
申请日:2013-08-15
公开日:2014-03-06
发明作者:Daniel Mascia
申请人:TNBT Holdings Pty Ltd；
IPC主号:E05B11-02

专利说明:
23625 An Improved Handle and Lock Assembly Technical Field This invention broadly relates to a handle and lock assembly. More particularly, the invention relates to an improved handle and lock assembly having a modified handle latching 5 mechanism which is less prone to unauthorised breaking with the assistance of a tool or instrument. Background of the Invention Handle and lock assemblies such as those disclosed in Australian patent application AU2003204718 and international patent application PCT/AU2006/000646 (PCT publication 10 No. W02007/033399) are useful in many applications. The handle of such assemblies is typically fitted to the exterior of a door or the like and hence are prone to being used to provide leverage for the purposes of unauthorised opening of the door or the like. It is an object of the present invention to provide an improved handle and lock assembly which may overcome or at least ameliorate the above disadvantage or which will at least 15 provide a useful alternative. Summary of the Invention According to the present invention, there is provided a handle and lock assembly including: a support base capable of being fitted to an object; a handle being mounted on and rotatable about the support base, the handle including a bore 20 for receiving a lock assembly which includes a lock cylinder and a clutching mechanism; and a shaft extending from the lock assembly for connection with a latching mechanism; wherein the clutching mechanism is capable of causing the lock assembly to directly or indirectly engage with the handle when the lock cylinder is in an unlocked position, and is capable of enabling the handle to rotate independently of the lock assembly when the lock 25 cylinder is turned through a predetermined angle to a locked position. The object is preferred to be one of the surfaces of a door, panel or the like. In a preferred embodiment, the clutching mechanism includes: a chassis adapted to receive the lock cylinder; a positioning means being associated with or forming part of the lock cylinders, and having 30 first and second engaging portions, the first engaging portion having a different configuration 2 23625 from the second engaging portion; and a biased clutching means supported by the chassis and adapted to cooperate with the respective engaging portions of the positioning means separately. Preferably the clutching means is supported by a biasing means which is in turn supported by 5 a part of the chassis. Preferably, the first engaging portion is configured such that when in engagement with the clutching means, it is capable of maintaining the clutching means in an extended position where at least part of the clutching means is in locking engagement with the handle. More preferably, when the clutching means is in the extended position, at least part of the clutching io means is received within a recess provided in the bore of the handle. Preferably, the second engaging portion is configured such that when in engagement with the clutching means, it is capable of allowing the clutching means to be suppressed into a retracted position so that the clutching means is not in locking engagement with the handle. More preferably, when the clutching means is in the retracted position, no part of the clutching 15 means is inside the recess. In a preferred embodiment, when the lock cylinder is in the unlocked position, the positioning means is disposed such that the first engaging portion engages the clutching means. As such, the lock assembly and the handle are interlocked thereby causing synchronised rotation of the lock assembly as the handle is turned. This means that the handle can be used to turn 20 the lock assembly when the lock cylinder is in the unlocked position. When the lock cylinder is in the locked position, the positioning means is disposed such that when part of the clutching means is received within the recess, a gap is created between the second engaging means and the clutching means. This means that the clutching means is out of contact with the second engaging means. As the handle is turned, the clutching means is 25 suppressed into the retracted position. As such, the handle is capable of being turned independently of the lock assembly. This means that the handle cannot be used to turn the lock assembly when the lock cylinder is in the locked position. The recess is preferred to be defined by one or more curved or bevelled surfaces which conform to the profile of the part of the clutching means received in the recess. 30 It is preferred that the positioning means is in the form of lobe, the first engaging portion being a curved circumferential surface of the lobe and the second engaging portion being a flat surface. 3 23625 Preferably, the lock assembly further includes a binding means adapted to secure the lock cylinder to the chassis. More preferably, the binding means includes a lock cylinder engaging portion and a chassis engaging portion. Preferably, the lock cylinder is rotatable between the locked and unlocked positions by way of 5 a key. In a preferred embodiment, the locked and unlocked positions are 180 degrees apart. In this embodiment, the key is retrievable only when the lock cylinder is at the locked and unlocked positions where locking elements contained within the lock cylinder are aligned with and allowed to extend into corresponding slots provided in the chassis. The chassis is preferred to include an impeding means being adapted in use to cooperate 1o with a corresponding means associated with or forming part of the lock cylinder so as to provide a key retaining mechanism. It is preferred that the impeding means is located at or in close proximity to the unlocked position so as to prevent the lock cylinder from being rotated to reach the unlocked positions. As such, the key may not be retrieved when the lock assembly is unlocked. 15 In a preferred embodiment, the shaft includes a first pair of engaging means adapted to engage a second pair of corresponding engaging means provided in the vicinity of an end of the chassis. Preferably, the stop plate is capable of securing the shaft to the chassis. The stop plate is also preferred to be capable of locking the handle in one or more chosen positions relative to 20 the support base. The stop plate preferably includes at least one lug extending from one side of the plate and at least one lug extending from another side of the plate. Even more preferably, the shaft is replaceable by another shaft with a different length or configuration. Optionally, a washer is provided between the end of the chassis and the stop plate. Preferably, the handle has a stem portion and at least one arm extending from the stem 25 portion. The arm is preferred to have a line or area of weakness located close to the stem portion. This preferably facilitates snapping off of the arm along the line or at the area of weakness if and when the arm is used to provide leverage for breaking of the lock assembly. The lock cylinder is preferred to include a line or area of weakness close to the positioning means defining a front portion such that if and when the lock cylinder is forcefully yanked out 30 with the assistance of a tool, the front portion is susceptible to snapping off leaving behind a non-exposed portion of the lock cylinder inside the lock assembly. 4 23625 In a preferred embodiment, the support base is connected to the panel, door or the like via one or more screws, the or each screw having a threaded elongate portion detachably connected to a head portion adapted to be received within a cavity provided in the support base. The head portion is preferred to be made of a relatively hard material. More preferably, 5 each head portion has means preventing the head from rotating within the cavity. The means is preferred to be a keyed profile adapted to cooperate with a corresponding keyed profile provided in the cavity of the support base so as to facilitate installation. In a preferred embodiment, the stem portion of the handle has an edge including a cut-out. Preferably, the support base includes a corresponding hole. More preferably, the cut-out and 1o the corresponding hole are aligned when the lock assembly is rotated to an unlocked position and the handle rotated to a position where the angle between the arm of the handle and the unlocked position is substantially 45 degrees. As such, a pointed instrument may be passed through the cut-out and the hole to press on a retaining locking element contained in the lock cylinder so as to enable removal or retrieval of the lock cylinder via the front opening of the 15 chassis. Brief Description of the Drawings The invention may be better understood from the following non-limiting description of a preferred embodiment, in which: Figure 1 is an exploded view of a handle and lock assembly in accordance with a 20 preferred embodiment of the present invention; Figure 2 is a perspective view of a lock cylinder of the assembly of Figure 1 being associated with a clutching means when the lobe is in a first position; Figure 3 is a plan view from top showing the lock cylinder of the assembly of Figure 2 being associated with the clutching means received within a chassis when the lobe is 25 in the first position; Figure 4 is a cross-sectional view of the lock cylinder and clutching means of Figure 3 taken along the line A-A; Figure 5 is a perspective view of the assembled lock assembly including the lock cylinder and clutching means of Figure 2 received within the chassis; 30 Figure 6 is a magnified perspective view of the handle of the assembly of Figure 1; 5 23625 Figure 7 is a front view of the assembled handle and lock assembly of Figure 1 when the lobe is in the first position; Figure 8 is a perspective view of the lock cylinder of Figure 1 being associated with a clutching means when the lobe is in a second position; 5 Figure 9 is a plan view from top showing the lock cylinder of Figure 1 being associated with the clutching means received within the chassis when the lobe is in the second position; Figure 10 is a cross sectional view of the lock cylinder and clutching means of Figure 9 taken along the line B-B; 10 Figure 11 is a perspective view of the assembled lock assembly of Figure 1 when the lobe is in the second position; Figure 12 is a plan view from top showing the lock cylinder and clutching means of Figure 1 when the lobe is in the second position; Figure 13 is a magnified cross sectional view of the lock cylinder and clutching means 15 of Figure 12 taken along the line C-C; Figure 14 is a front view of the assembled handle and lock assembly of Figure 1 with the lobe being in the second position; Figure 15 is a front view of the assembled handle and lock assembly of Figure 1 showing a key being stopped by an impeding means; 20 Figure 16 is a cross sectional view of the assembly of Figure 15 taken along the line D-D; Figure 17 is a perspective view of the cross sectional view of the assembly of Figure 16 except that the lock cylinder is shown in full; Figure 18 is a magnified perspective view of the cross sectional view of the assembly 25 of Figure 16; Figure 19 is a partially exploded view of the lock assembly of Figure 1 without the handle and support base; Figures 20 to 25 are pairs of drawings showing firstly a rear end view of the handle 6 23625 assembly and secondly a rear perspective view of the handle assembly, each pair respectively illustrating how a 90 degrees clockwise turn, 90 degrees anti clockwise turn, 180 degrees anti clockwise turn, and 180 degrees clockwise turn may be achieved by repositioning the stop plate; 5 Figure 26 is a perspective view showing the- two screws protruding through the lock assembly of Figure 1; Figure 27 is a magnified perspective view of the support base of the assembly of Figure 1; Figure 28 is a magnified perspective view of one of the screws of Figure 26; 10 Figure 29 is an exploded perspective view of the screw of Figure 28 with the head detached; Figure 30 is a magnified perspective view of the lock cylinder of the assembly of Figure 1 showing a line of weakness; Figure 31 is a side view of the lock cylinder of Figure 30; 15 Figure 32 is a perspective view of the handle of the assembly of Figure 1 showing a cut-out; Figure 33 is a perspective view of the support base of the assembly of Figure 1 showing a corresponding hole; Figure 34 is a perspective view of the lock assembly of Figure 1 showing an extended 20 wafer; Figure 35 is a perspective view of the assembled lock assembly of Figure 1 illustrating the handle being in a position where the cut-out and the hole are aligned; and Figure 36 is a perspective view of the assembly lock assembly of Figure 35 illustrating the handle being in a different position where the cut-out and the hole are out of 25 alignment. Detailed Description of the Drawings It should be noted that the handle and lock assembly described herein may be fitted onto any movable structure used to open or close off an entrance, such as a lid, a front panel of a 7 23625 drawer etc. Referring to Figures 1, there is shown a handle and lock assembly generally referenced 10 which has a handle 14 rotatably mounted on a support base 12 which is commonly known as an escutcheon. The support base 12 is designed to be fitted onto a door, panel or the like (not 5 shown). The handle 14 has a bore 16 for receiving a lock assembly which is mainly formed by a lock cylinder 18 and a clutching mechanism consisting of a chassis and a positioning means, which will be discussed in further detail below. As shown in Figure 1, the handle and lock assembly 10 also has a shaft 20 which extends from the lock assembly for connection with a latching mechanism (not shown). The clutching 10 mechanism is provided to cause the handle 14 to drive the lock assembly when the lock cylinder 18 is in an unlocked position (when the triangle sign 22 is pointing towards a locked sign 24). The clutching mechanism is also capable of enabling the handle 14 to rotate independently of the lock assembly when the lock cylinder 18 is turned through a predetermined angle of 180 degrees to a locked position (when the triangle sign 22 is pointing 15 towards an unlocked sign 26). Referring to Figures 1 to 7, the clutching mechanism consists of a chassis 28 and a positioning means in the form of a lobe 30 (see specifically Figures 2 & 4). The chassis 28 is designed to receive the lock cylinder 18 and the lobe 30. In the present embodiment, the lobe 30 is an integral part of the lock cylinder 18. The lobe 30 has two engaging portions 32 & 34 20 (see Figure 4) having different configurations. The first engaging portion 32 comprises a circumferential curved surface of the lobe 30 whereas the second engaging portion 34 is a flat blunted surface. Referring to Figures 2 to 5 and 7, the lock cylinder 18 is in the unlocked position. The clutching mechanism has a clutching means 36 which is in the form of a block. The clutching 25 means 36 is configured to cooperate with the respective engaging portions 32 & 34 of the positioning means separately depending on the orientation or disposition of the lobe 30. The clutching means 36 is constantly biased against the bore 16 of the handle 14 by a biasing means in the form of a coiled spring 38 (see Figure 4) supported by a part 40 of the chassis 28. 30 As best shown in Figures 2, 4 and 7, the first engaging portion 32 is configured such that when in engagement with the clutching means 36, it is capable of maintaining the clutching means 36 in an extended position where part 42 of the clutching means 36 is received within a recess 44 provided in the bore 16 of the handle 14. 8 23625 As shown in Figures 2 to 5 and 7, when the lock cylinder 18 is in the unlocked position, the lobe 30 is disposed such that the first engaging portion 32 being the circumferential curved surface engages the clutching means 36. As such, the lock assembly and the handle 14 are interlocked thereby causing synchronised rotation of the lock assembly when and as the 5 handle 14 is turned. This effectively means that the handle 14 can be used to turn the lock assembly when the lock cylinder 18 is in the unlocked position. Referring to Figures 6 & 7, the recess 44 is defined by two bevelled surfaces 46 & 48 which conform to the profile of the upper portion 50 of the clutching means 36 which is received in the recess 44. 10 Turning now to Figures 8 to 14, there is shown the lock cylinder 18 turned into the locked position. The second engaging portion 34 being a flat surface is configured such that it is capable of allowing the biased clutching means 36 to be suppressed into a retracted position When aligned with the recess, the clutching means 36 being supported by the coiled spring 38 in the extended position is still received in the recess 44. However, as shown in Figure 10, 15 a gap 33 is created between the lower end of the clutching means 36 and the flat surface 34. This means that at this juncture, the lower end of the clutching means 36 is not in contact with the flat surface 34. As shown in Figures 12 to 14, when the lock cylinder 18 is in the locked position, the lobe 30 is turned 180 degrees (from the original position shown in Figure 4) resulting in the second engaging means 34 being in engagement with the clutching means 36 20 only when suppressed. As the handle 14 is turned, the bevelled surface 46 acts against the upper portion 50 of the biased clutching means 36 resulting in compression of the coiled spring 38 and hence suppression of the clutching means 38 into the retracted position. As such, the handle 14 is capable of being turned independently of the lock assembly, as best shown in Figure 14. This means that the handle 14 cannot be used to drive or turn the lock 25 assembly when the lock cylinder 18 is in the locked position. As shown in Figures 1 and 4, the lock assembly has a binding means 52 configured to secure the lock cylinder 18 to the chassis 28. The binding means 52 has a lock cylinder engaging portion 56 and a chassis engaging portion 54. The lock cylinder 18 is rotatable between the locked and unlocked positions by way of a key 30 58 (see Figures 15 to 18). As indicated by the signs 24 and 26 in Figure 1, the locked and unlocked positions are 180 degrees apart. The design of the lock assembly is that the key 58 is retrievable only when the lock cylinder 18 is at the locked and unlocked positions where locking elements 60 contained within the lock cylinder 18 are aligned with and allowed to 9 23625 extend into corresponding slots 62 provided in the chassis 28. As shown in Figures 16 to 18, the chassis 28 includes an impeding means in the form of a roll pin 64 which is configured in use to cooperate with a corresponding means in the form of a protrusion 66 stemming from the lobe 30 so as to provide a key retaining mechanism. The 5 protrusion 66 is located at or in close proximity to the unlocked position (as indicated by the sign 26 in Figure 1) so as to prevent the lock cylinder 18 from being rotated to reach the unlocked positions where the key 58 may be retrieved. As such, the key 58 cannot be retrieved when the lock assembly is unlocked. Turning to Figure 19, the shaft 20 has a first pair of engaging means in the form of lugs 68 io designed to engage a second pair of corresponding engaging means in the form of indents 70 provided in the vicinity of the end of the chassis 28. The chassis 28 also provides a cavity 72 at its rear end for receiving a front portion 74 of the shaft 20. Referring to Figures 19 to 25, the handle14 may be locked in various positions relative to the support base 12 by means of a stop plate 76. The stop plate 76 has a hollow 78 for receiving 15 the shaft 20 and two lugs 82 & 84 extending from one side and one lug 80 extending from another side of the plate 76. Referring back to Figure 19, the stop plate 76 is attached to the rear end 86 of the chassis by means of screws 88 & 90. The shaft 20 is movable by undoing the screws 88 & 90 and is replaceable by another shaft with a different length and/or configuration. It should be noted that the stop plate 76 has the dual function of securing the 20 shaft 20 and being repositionable to cooperate with the handle 14 for different applications. As shown in Figure 1, a washer 92 is located next to the repositionable stop plate 76. The lugs 80, 82 and 84 are oriented 90 degrees radially with respect to each other about the repositionable stop plate 76. The three different pairs of Figures, namely Figures 20 & 21, 22 & 23, 24 & 25 show how the stop plate 76 may be located by means of screws 88 & 90 to 25 achieve rotation of the handle 14 in a 90 degrees clockwise turn, 90 degrees anti-clockwise turn, 180 degrees anti clockwise turn, and 180 clockwise turn, respectively. Details of the repositioning mechanism were described in the specification of international patent application PCT/AU2006/000646 (PCT publication No. W02007/033399) and will not be repeated here. Referring to Figures 26 to 29, the support base 12 is connected to the movable structure via 30 two identical screws 94 & 96. Each screw 94, 96 has a threaded elongate portion 98 detachably connected to a head portion 100 which after installation is received within a cavity 102, 104 provided in the support base 12. The head portion 100 of each screw 94, 96 is made of a relatively hard material. Each head portion 100 has a means in the form of a keyed profile 10 23625 106 which is configured to prevent the head portion 100 from rotating within the cavity 102, 104. For example, the keyed profile 106 cooperates with a corresponding keyed profile 108 provided in the cavity 104 of the support base 12 so as to facilitate installation. Referring to Figures 21, 23 and 25, the handle 14 is T-shaped having a stem portion 110 5 flanked by two arms 112 & 114. Each arm 112, 114 has a line of weakness in the form of a groove 116, 118 located close to the stem portion 119 as a security feature. This design facilitates snapping off of the respective arms 112 & 114 along the grooves 116 & 118 if and when the arm 112, 114 is used to provide leverage for breaking of the lock assembly in order to open the movable structure which may typically be a door or the like. 10 Turning to Figures 30 and 31, as another security feature, the lock cylinder 18 has a line of weakness in the form of a groove 120 located closely behind the lobe 30. The groove 120 defines a front portion 122 such that if and when the lock cylinder 18 is forcefully yanked out from the exterior of the movable structure with the assistance of a tool, the front portion 122 is susceptible to snapping off leaving behind a non-exposed portion of the lock cylinder 18 15 inside the lock assembly. Referring to Figures 32 to 36, the stem portion 110 of the handle 14 has a bottom edge 124 with a cut-out 126. The support base 12 has a corresponding hole 128. The cut-out 126 and the corresponding hole 128 are aligned when the lock assembly is rotated to the unlocked position and the handle 14 rotated to a position where the angle between the arm of the 20 handle and the unlocked position is substantially 45 degrees, as shown in Figure 35. A pointed instrument or tool may then be passed through the cut-out 126 and the hole 128 to press on the protruding end of a retaining locking element 130 (see Figure 34) which is partly contained in the lock cylinder 18. Once the protruding end of the retaining locking element 130 is pressed and urged back into the lock cylinder 18 thereby creating a clear shear line, 25 removal or retrieval of the lock cylinder 18 via a front opening 132 (see Figure 1) of the chassis may be effected. When the cut-out 126 and hole 128 are not aligned, as shown in Figure 36, the access to the locking element 130 is denied and hence the lock cylinder 18 is not removable or retrievable. Now that a preferred embodiment of the present invention has been described in some detail, 30 it will be apparent to a skilled person in the art that the handle and lock assembly of the present invention may offer at least the following advantages: 1. it provides enhanced safety features thereby reducing the likelihood of the lock assembly being broken by using the handle to provide leverage with the assistance 11 23625 of a tool from the exterior of a movable structure on which the handle and lock assembly is mounted; and 2. it reduces the number of parts required for application on different movable structures thereby reducing inventory costs. 5 Those skilled in the art will appreciate that the invention described herein is susceptible to variations and modifications other than those specifically described. All such variations and modifications are to be considered within the scope and spirit of the present invention the nature of which is to be determined from the foregoing description. 12

权利要求:
Claims (37)
[1] 1. A handle and lock assembly including: a support base capable of being fitted to an object; a handle being mounted on and rotatable about the support base, the handle including a bore for receiving a lock assembly which includes a lock cylinder and a clutching mechanism; and a shaft extending from the lock assembly for connection with a latching mechanism; wherein the clutching mechanism is capable of causing the lock assembly to directly or indirectly engage with the handle when the lock cylinder is in an unlocked position, 10 and is capable of enabling the handle to rotate independently of the lock assembly when the lock cylinder is turned through a predetermined angle to a locked position.
[2] 2. The handle and lock assembly of claim 1, wherein the clutching mechanism includes: a chassis adapted to receive the lock cylinder; a positioning means being associated with or forming part of the lock cylinders, and 15 having first and second engaging portions, the first engaging portion having a different configuration from the second engaging portion; and a biased clutching means supported by the chassis and adapted to cooperate with the respective engaging portions of the positioning means separately.
[3] 3 The handle and lock assembly of claim 2, wherein the clutching means is supported 20 by a biasing means which is in turn supported by a part of the chassis.
[4] 4. The handle and lock assembly of either claim 2 or 3, wherein the first engaging portion is configured such that when in engagement with the clutching means, it is capable of maintaining the clutching means in an extended position where at least part of the clutching means is in locking engagement with the handle. 25
[5] 5. The handle and lock assembly of any one of claims 2 to 4, wherein when the clutching means is in the extended position, at least part of the clutching means is received within a recess provided in the bore of the handle.
[6] 6. The handle and lock assembly of any one of claims 2 to 5, wherein the second engaging portion is configured such that when in engagement with the clutching 30 means, it is capable of allowing the clutching means to be suppressed into a retracted position so that the clutching means is not in locking engagement with the handle. 13 23625
[7] 7. The handle and lock assembly of either claim 5 to 6, wherein when the clutching means is in the retracted position, no part of the clutching means is inside the recess.
[8] 8. The handle and lock assembly of any one of claims 2 to 7, wherein when the lock cylinder is in the unlocked position, the positioning means is disposed such that the 5 first engaging portion engages the clutching means.
[9] 9. The handle and lock assembly of any one of claims 2 to 8, wherein when the lock cylinder is in the locked position, the positioning means is disposed such that when part of the clutching means is received within the recess, a gap is created between the second engaging means and the clutching means.
[10] 10 10. The handle and lock assembly of any one of claims 2 to 9, wherein as the handle is turned, the clutching means is suppressed into the retracted position such that the handle is capable of being turned independently of the lock assembly.
[11] 11. The handle and lock assembly of any one of claims 5 to 10, wherein the recess is defined by one or more curved or bevelled surfaces which conform to the profile of the 15 part of the clutching means received in the recess.
[12] 12. The handle and lock assembly of any one of claims 2 to 11, wherein the positioning means is in the form of lobe, the first engaging portion being a curved circumferential surface of the lobe and the second engaging portion being a flat surface.
[13] 13. The handle and lock assembly of any one of claims 2 to 12, wherein the lock assembly 20 further includes a binding means adapted to secure the lock cylinder to the chassis.
[14] 14. The handle and lock assembly of claim 13, wherein the binding means includes a lock cylinder engaging portion and a chassis engaging portion.
[15] 15. The handle and lock assembly of any one of the preceding claims, wherein the lock cylinder is rotatable between the locked and unlocked positions by way of a key. 25
[16] 16. The handle and lock assembly of any one of the preceding claims, wherein the locked and unlocked positions are 180 degrees apart.
[17] 17. The handle and lock assembly of either claim 15 or 16, wherein the key is retrievable only when the lock cylinder is at the locked and unlocked positions where locking elements contained within the lock cylinder are aligned with and allowed to extend into 30 corresponding slots provided in the chassis. 14 23625
[18] 18. The handle and lock assembly of any one of claims 2 to 17, wherein the chassis includes an impeding means being adapted in use to cooperate with a corresponding means associated with or forming part of the lock cylinder so as to provide a key retaining mechanism. 5
[19] 19. The handle and lock assembly of claim 18, wherein the impeding means is located at or in close proximity to the unlocked position so as to prevent the lock cylinder from being rotated to reach the unlocked positions.
[20] 20. The handle and lock assembly of any one of claims 2 to 19, wherein the shaft includes a first pair of engaging means adapted to engage a second pair of corresponding 10 engaging means provided in the vicinity of an end of the chassis.
[21] 21. The handle and lock assembly of any one of claims 2 to 20, wherein a stop plate is provided to secure the shaft to the chassis.
[22] 22. The handle and lock assembly of claim 21, wherein the stop plate is capable of locking the handle in one or more chosen positions relative to the support base. 15
[23] 23. The handle and lock assembly of either claim 21 or 22, wherein the stop plate includes at least one lug extending from one side of the plate and at least one lug extending from another side of the plate.
[24] 24. The handle and lock assembly of any one of the preceding claims, wherein the shaft is replaceable by another shaft with a different length or configuration. 20
[25] 25. The handle and lock assembly of any one of claims 21 to 24, wherein a washer is provided between the end of the chassis and the stop plate.
[26] 26. The handle and lock assembly of any one of the preceding claims, wherein the handle has a stem portion and at least one arm extending from the stem portion.
[27] 27. The handle and lock assembly of claim 26, wherein the arm has a line or area of 25 weakness located close to the stem portion.
[28] 28. The handle and lock assembly of any one of the preceding claims, wherein the lock cylinder includes a line or area of weakness close to the positioning means defining a front portion.
[29] 29. The handle and lock assembly of any one of the preceding claims, wherein the 15 23625 support base is connected to the object via one or more screws, the or each screw having a threaded elongate portion detachably connected to a head portion adapted to be received within a cavity provided in the support base.
[30] 30. The handle and lock assembly of claim 29, wherein the head portion is made of a 5 relatively hard material.
[31] 31. The handle and lock assembly of either claim 29 or 30, wherein the or each head portion has means preventing the head from rotating within the cavity.
[32] 32. The handle and lock assembly of claim 31, wherein the means is a keyed profile adapted to cooperate with a corresponding keyed profile provided in the cavity of the 10 support base so as to facilitate installation.
[33] 33. The handle and lock assembly of any one of the preceding claims, wherein the stem portion of the handle has an edge including a cut-out.
[34] 34. The handle and lock assembly of claim 33, wherein the support base includes a hole which corresponds to the cut-out. 15
[35] 35. The handle and lock assembly of claim 34, wherein the cut-out and corresponding hole are aligned when the lock assembly is rotated to an unlocked position and the handle rotated to a position where the angle between the arm of the handle and the unlocked position is substantially 45 degrees.
[36] 36. The handle and lock assembly of either claim 34 or 35, wherein a pointed instrument 20 is provided and passed through the cut-out and the hole to press on a retaining locking element contained in the lock cylinder so as to enable removal or retrieval of the lock cylinder via the front opening of the chassis.
[37] 37. A handle and lock assembly substantially as herein described with reference to any one of the accompanying drawings. 25 16

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同族专利:

公开号 | 公开日

AU2013216663B2|2017-09-07|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

WO2007033399A1|2005-09-19|2007-03-29|Tnbt Holdings Pty Ltd|Handle and lock assembly|

法律状态:
2013-09-12| DA3| Amendments made section 104|Free format text: THE NATURE OF THE AMENDMENT IS: AMEND THE NAME OF THE INVENTOR TO READ MASCIA, DANIEL |

2018-01-18| FGA| Letters patent sealed or granted (standard patent)|

优先权:

申请号 | 申请日 | 专利标题

AU2012903510||2012-08-15||

AU2012903510A|AU2012903510A0||2012-08-15|An Improved Handle And Lock Assembly|

AU2013216663A|AU2013216663B2|2012-08-15|2013-08-15|An Improved Handle and Lock Assembly|AU2013216663A| AU2013216663B2|2012-08-15|2013-08-15|An Improved Handle and Lock Assembly|

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