• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a knife (10) for exchangeable blades (24) of different types, comprising a substantially elongated handle (12) with a proximal end (12a) and a distal end (12b) along a handle axis (A). A blade holder (18) is provided for carrying a blade (24) and actuating means are provided on the handle (12) for selectively securing the blade holder (18) at a parting line (20) at the distal end (12b) of the handle (12) and solve. A blade (24) is carried by the blade holder (18) and has an exposed cutting edge (24a) substantially along a lower side of the handle (12) and has a predetermined projected length along the handle axis (A). The blade holder has an upper support portion (18a) substantially along a top of the handle and has a projected length along the handle axis (A) that is approximately or substantially proportional to the predetermined length to provide support for the blade (24). A set includes a plurality of blade holders each with a differently shaped blade, each blade holder having an upper support portion which is substantially proportional to the projected length of a blade edge along the handle axis.
    公开号:CH717356A2
    申请号:CH00412/21
    申请日:2021-04-19
    公开日:2021-10-29
    发明作者:Panosian Michael；Keeler Joshua
    申请人:Toughbuilt Ind Inc；
    IPC主号:
    专利说明:

    BACKGROUND OF THE INVENTION
    1. Field of invention:
    The invention relates generally to knives and, more particularly, to knives for interchangeable blades of various types.
    2. Description of the state of the art:
    Knives with interchangeable blades are known. If the blades become dull, they can easily be replaced with blades of the same type. Interchangeable blade knives are disclosed, for example, in U.S. Patent No. 4,180,909 which discloses an interchangeable blade knife. A hand tool with various interchangeable blades is also disclosed in U.S. Patent No. 6,701,626. Different types of interchangeable blades are disclosed in U.S. Patent No. 4,425,709. Published US Patent Application No. 2004/0163264 discloses a hand saw and a set of saw blades of various types that can be received in a handle. In the above-mentioned devices, the blades are relatively thick and do not require any support on the sides opposite the cutting edges in order to prevent breakage, and they are not provided with such either.
    U.S. Patent No. 8,834,509 discloses a tool with interchangeable tool cartridges. For example, the patent shows a saw, knife, scraper, hooked blade and screwdriver. The knife disclosed in this patent uses identical cassette housings which equally support all types of blades along the non-cutting edges opposite the cutting edges, making some types of blades more prone to breakage than others depending on the shape and / or length of the cutting edges.
    This problem is also illustrated in US Pat. No. 8,978,254 in which the same blade holder provides a conventional or standard flat cutting edge blade with the same support as a curved cutting blade such as a knife blade. This becomes particularly problematic with thinner blades and can lead to breakage and injury to the user. In the case of blades for industrial knives, regardless of type or shape, a support element or a cassette usually cannot provide the same degree of support without impairing the exposure and effect of the cutting edges of the blades.
    SUMMARY OF THE INVENTION
    Accordingly, it is an object of the invention to provide a knife for interchangeable blades of different types that does not have the disadvantages associated with known knives.
    Another object of the invention is to provide a knife for interchangeable blades of different types that uses blade holders that are specifically dimensioned to properly support blades of different types regardless of their size or configuration.
    Another object of the invention is to provide a knife for interchangeable blades of different types, which has a simple structure and is inexpensive to manufacture.
    Still another object of the invention is to provide a knife for interchangeable blades of various types which is simple and convenient to use.
    Yet another object of the invention is to provide a knife for interchangeable blades of different types that is suitable for both thicker and thinner knife blades, regardless of their size or shape.
    Another object of the invention is to provide a knife for interchangeable blades of different types that is safe to use by reducing or eliminating the breakage of usually sharp blades.
    In order to achieve the above objects as well as others which will become apparent below, a knife for interchangeable blades of different types comprises a substantially elongated handle with a proximal end and a distal end along a handle axis. A blade holder carries a blade. An actuation mechanism on the handle enables a user to selectively attach and detach the blade holder on the distal end of the handle at a parting line. A blade is carried by the blade holder and has an exposed cutting edge substantially along a lower side of the handle and has a predetermined projected length along the handle axis, the blade holder having an upper support portion substantially along an upper side of the handle, from the parting line a distal end of the upper support portion, the support portion having a projected length along the handle axis substantially equal to the predetermined length of the exposed cutting edge to provide support for the blade.
    BRIEF DESCRIPTION OF THE DRAWINGS
    The above and other aspects, features and advantages of the present invention will become more apparent from the following description when viewed together with the accompanying drawings, in which: Figure 1 is a side view of a knife according to the invention for interchangeable blades of different types, with a blade holder for receiving a hook-shaped blade with an inwardly directed or concave-shaped cutting edge; Figure 2 is similar to Figure 1 but shows a blade holder for receiving a standard blade with a straight cutting edge; and Figure 3 is similar to Figures 1 and 2, but shows a blade holder for receiving a scalpel-shaped blade with a convex cutting edge.
    DESCRIPTION OF THE PREFERRED DESIGN VARIANTS
    With reference to the figures, in which identical or similar parts are designated throughout with the same reference numerals, and initially with reference to Figure 1, the knife for interchangeable blades of different types is generally designated by the reference numeral 10.
    The knife 10 for interchangeable blades of different types comprises a substantially elongated handle 12 which defines a handle axis A and has a proximal end 12a, a distal end 12b, an upper edge 12c and a lower edge 12d. An optional handle extension 14 is connected to the handle 12, but is pivotally attached to it by a pivot point 16 in order to be able to pivot the extension up to about 180 ° from the position shown into a retracted position within the handle, when the handle is connected to an inner Cavity (not shown) is provided.
    A blade holder 18 is configured to have a blade support portion 18a substantially along the upper edge 12c of the handle and can be attached and detached from the handle 12 along a parting line 20 to selectively position the blade holder 18 on the handle extension 14 to attach and detach from this. An externally accessible button 22 is used to actuate a locking mechanism (not shown) in order to selectively attach or detach the blade holder 18 from the handle 12. The exact shape of the parting line 20 or the locking mechanism used to connect or disconnect the blade holder from the handle is not critical. If a pivotable extension 14 is not used, the blade holder 18 can be attached directly to the distal end 12b of the handle along a similar or other desired configuration of a parting line.
    A blade 24 can be carried by the blade holder 18 in any conventional or known manner. The blade 24 can be attached to and integrated with the blade holder 18 to form a substantially unitary module or cassette comprised of the blade holder 18 and the blade 24.
    The blade 24, as seen in Figure 1, has an exposed cutting edge 24a substantially along the underside or edge 12d of the handle 12. The blade has a distal end or point 24b and a proximal end 24c of the cutting edge Location of the first exposure from the blade holder 18.
    The distance or dimension 18d is the distance between the proximal and distal ends 18b and 18c, respectively, projected along the handle axis A. The distance 24d is the dimension between the distal end 18c of the blade holder 18 and the tip of the blade 24b . Similarly, dimension 24e represents the distance or dimension of cutting edge 24a as projected along handle axis A.
    Referring to Figure 2, a standard blade or conventional straight blade 26 is shown, while in Figure 3 a scalpel-shaped blade 28 is shown. The dimensions 18d 'and 18d ″ in FIGS. 2 and 3 correspond to the dimension 18d in FIG. 1. Similarly, the dimensions 26d and 28d in FIG. 2 and 3 correspond to the dimension 24d in FIG. 1. The dimensions 26e and 28e also correspond the dimension 24e in Figure 1. All of these dimensions are projections measured along the handle axis A.
    The dimensions 24d, 26d and 28d in Figures 1, 2 and 3 are approximately or substantially the same. However, the linear dimensions 18c, 18c 'and 18c "of the support sections 18a, 18a' and 18a" in Figures 1, 2 and 3 are approximately or substantially the same as the dimensions 24e, 26e and 28e in Figures 1, 2 and 3. The dimensions of the blade support portions along the top edges or sides 12c of the handle therefore substantially correspond to the projected lengths or dimensions of the cutting edges along the handle axis A.
    The blade holders 18, 18 ', 18 "therefore have upper support sections 18a, 18a' and 18a" substantially along the upper edge 12c of the handle, which have projected lengths along the handle axis that are substantially equal and / or approximately proportional to the projected lengths 24e, 26c and 28e of the blade cutting edges to provide support for an associated blade.
    The invention also encompasses a set of interchangeable blades of different types comprising a plurality of blade holders each for holding a different type of blade, as indicated above, each blade holder being selectively connectable or detachable from the handle for performing different cutting functions. The kit includes at least one standard blade 26 with a straight cutting edge, a hook blade 24 with a concave edge, and a scalpel-like blade with a convex edge, as shown in Figures 1-3, respectively. The aforementioned blades, which may be included in the set, do not exclude other shaped blades, as long as the parameters or relative dimensions described above are essentially adhered to.
    While the invention has been shown and described with reference to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and detail can be made therein without departing from the spirit and scope of the invention, as indicated by the appended claims and their equivalents.
    权利要求:
    Claims (11)
    [1]
    A knife for interchangeable blades of various types, comprising a substantially elongated handle with a proximal end and a distal end along a handle axis; a blade holder for supporting a blade; Actuating means on the handle for selectively attaching and detaching the blade holder to the distal end of the handle at a parting line; a blade carried by the blade holder and having an exposed cutting edge substantially along a lower side of the handle and having a predetermined length projected along the handle axis, and wherein the blade holder has an upper support portion substantially along an upper side of the handle, from the parting line to a distal end of the upper support portion, which support portion has a projected length along the handle axis that is substantially equal to the predetermined length of the exposed cutting edge to provide support for the blade.
    [2]
    2. Knife for interchangeable blades of different types according to claim 1, wherein the actuating means comprise a latch for securing the blade holder at the distal end of the handle and a button on the outside of the handle which is accessible to a user in order to release the latch and the To enable separation of the blade holder from the handle.
    [3]
    3. Knife for interchangeable blades of different types according to claim 1, wherein the handle has an internal cavity; and pivot means on the handle for pivoting the blade holder from an extended position, which is substantially coextensive with the handle axis for use of the knife, to a retracted position within the cavity for storage.
    [4]
    4. Knife for interchangeable blades of different types according to claim 1, wherein the blade is a standard blade with a straight cutting edge.
    [5]
    5. A knife for interchangeable blades of various types according to claim 1, wherein the blade is a hooked blade with a concave cutting edge.
    [6]
    6. Knife for interchangeable blades of different types according to claim 1, wherein the blade is a scalpel-like blade with a convex cutting edge.
    [7]
    7. A knife for interchangeable blades of various types according to claim 1, wherein the blade holder has a distal end and the blade has an upper exposed edge that extends forwardly along a projected length along the handle axis, and wherein the forwardly extended lengths for all Blade types are substantially the same regardless of the predetermined projected length of the cutting edges.
    [8]
    A kit with a knife for interchangeable blades of different types according to claim 1, comprising a plurality of blade holders, each being adapted to hold a different type of blade and being selectively attachable and detachable to the handle to perform different cutting functions.
    [9]
    9. A kit with a knife for interchangeable blades of different types according to claim 8, wherein the set includes blade holders with differently shaped blades.
    [10]
    10. A knife set for interchangeable blades of various types according to claim 9, wherein the blades comprise a standard blade with a straight cutting edge, a hook blade with a concave cutting edge and a scalpel-like blade with a convex cutting edge.
    [11]
    11. A knife set for interchangeable blades of various types, comprising a substantially elongated handle having a proximal end and a distal end along a handle axis; a plurality of blade holders, each for holding different types of blades; Actuating means on the handle for selectively attaching and detaching the blade holders at the distal end of the handle at a parting line; a particular type of blade carried by a respective blade holder and having an exposed cutting edge substantially along a lower side of the handle and having a predetermined projected length along the handle axis, and each blade holder having an upper support portion substantially along an upper side of the handle from the parting line to a distal end of the upper support portion, and has a length projected along the handle axis that is substantially proportional to the predetermined length of an exposed cutting edge of a corresponding blade to provide support for the blade.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP0252319B1|1989-08-02|Knife with a substantially hollw handle body
    DE3834295C2|1996-12-12|Folding knife
    DE60203094T2|2006-01-26|Razor blade unit with shaving aid
    DE3049513A1|1981-09-17|BLADE BLOCK FOR A SHAVER
    DE1553706A1|1971-06-16|Safety razor
    DE19601941A1|1996-11-07|Working knife
    EP0529567B1|1996-10-09|Garden shears
    DE102004023870A1|2005-01-20|function knife
    WO2009087174A1|2009-07-16|Pliers as middle cutter or side cutter
    EP0529566A2|1993-03-03|Garden shears
    CH717356A2|2021-10-29|Knife for interchangeable blades of different types.
    EP1216664A2|2002-06-26|Device for abrasive treatment of calloused skin
    DE3136119A1|1983-03-31|"PRUNING SHEARS WITH LEVERAGE SUPPORT"
    DE112014006266B4|2021-08-05|Secateurs with cut toggle mode
    DE19511407C2|1996-11-21|Scissors with interchangeable blades
    AT277641B|1969-12-29|Scissors, especially for gardening
    DE8009334U1|1980-07-17|CHOPPER FOR HARVEST
    DE3909357A1|1990-09-27|SCISSORS
    DE102020119576A1|2022-01-27|Tissue punch for surgical treatment
    DE2625096C2|1978-04-06|Band saw machine for butcher shops or the like
    DE112019003499T5|2021-04-15|CUTTER KNIFE WITH SAFE BLADE CHANGE
    DE659362C|1938-05-02|Knuepfnadel, especially for carpet manufacture
    EP2226165A1|2010-09-08|Combination tool
    AT355447B|1980-03-10|KNIFE SHEATH WITH SHARPENING DEVICE
    DE1553797A1|1970-04-16|Scissors, especially hand scissors
    同族专利:
    公开号 | 公开日
    CN113524266A|2021-10-22|
    GB2596196A|2021-12-22|
    UY39177A|2021-10-29|
    RS20210471A2|2021-10-29|
    AU2021202321A1|2021-11-04|
    GB202105567D0|2021-06-02|
    EP3900895A1|2021-10-27|
    CA3114979A1|2021-10-20|
    EP3900895A4|2021-10-27|
    RS20210471A3|2021-11-30|
    JP2021171641A|2021-11-01|
    NO20210473A1|2021-10-21|
    CO2021004961A1|2021-07-19|
    US10926423B1|2021-02-23|
    IL282370D0|2021-10-31|
    PE20212278A1|2021-11-30|
    KR20210130107A|2021-10-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2267059A|1938-09-07|1941-12-23|George F Voight|Cutting and scraping tool|
    US4180909A|1978-03-14|1980-01-01|Anders Lind|Knife with exchangeable blades|
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    DE102013200061B4|2013-01-04|2018-02-08|Martor Kg|Interchangeable blade cutting tool and replacement blade replacement method|
    DE202013100819U1|2013-02-25|2013-03-01|Helmut Zepf Medizintechnik Gmbh|scalpel holder|
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    DE202015007456U1|2015-10-27|2017-01-30|Whymark Ventures Ltd.|Interchangeable blade|
    US20170348863A1|2016-06-03|2017-12-07|Browning|Knife apparatus with interchangeable blades|
    US11254021B2|2016-12-20|2022-02-22|Walter HALUCHA|Sliding scale release for an automatically opening tool|
    US10716592B2|2017-09-05|2020-07-21|Aspen Surgical Products Inc.|Scalpel blade loader|
    TWM567693U|2018-01-18|2018-10-01|禾龍有限公司|Tool capable of quickly and safely replacing and securing positioned blade and shank structure thereof|
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    US10994432B2|2019-11-22|2021-05-04|Daniel C Hayes|Cutting tool|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US16/852,951|US10926423B1|2020-04-20|2020-04-20|Interchangeable different style-blade utility knife|
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