Locking mechanism for a folding knife

Abstract

A device may include a locking mechanism for a folding knife, where the folding knife includes a first scale; a second scale opposed to the first scale, where the first and second scales are spaced apart to allow a blade therebetween when the blade is in a folded position; the blade including a tang that connects the blade at a pivot point between the first and second scales, and where the blade includes a first protruding lug adjacent to the pivot point and within the first scale; and the locking mechanism is in contact with the first and second scales and a first button on a first side of the locking mechanism extends through the first scale; where the locking mechanism slides in relation to the first and second scales to engage and disengage the locking mechanism with the first protruding lug to move the blade.

Description

Attorney Docket No. 1338.238.01 WOLOCKING MECHANISM FOR A FOLDING KNIFECROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims priority under 35 U.S.C. §119 and PCT Article 8, Rule 4.10 to U.S. Provisional Application No. 63 / 707,108 entitled “LOCKING MECHANISM”, filed on October 14, 2024, which is hereby incorporated by reference herein in its entirety and for all purposes.FIELD

[0002] The present disclosure relates generally to locking mechanisms. In particular, but not by way of limitation, the present disclosure relates to systems, methods and apparatuses a locking mechanism for use in a folding knife.BACKGROUND

[0003] A folding knife is a cutting tool that has a blade pivotally connected to a handle. The handle may include a pair of scales that sandwich the blade between them. The blade pivots with respect to the scales (or handle) to transition between folded and deployed positions. When folded, a cutting edge of the blade resides between the scales (or handle), and the scales (or handle) protect the cutting edge from inadvertent contact that might damage the cutting edge or cause personal injury. When deployed, the blade extends from the scales (or handle) to expose the cutting edge for use.

[0004] A manually operated folding knife requires a user to physically rotate the blade with respect to the handle to reposition the blade between the folded and deployed positions. A single-action folding knife includes a spring that engages with the blade to automatically deploy the blade, and the user must apply force to the blade to overcome the spring force to manually pivot the blade with respect to the handle to return the blade to the folded position. A double-action folding knife includes a spring that engages with the blade to automatically deploy and retract the blade.Attorney Docket No. 1338.238.01 WOSUMMARY

[0005] In some aspects, the present disclosure relates to a locking knife, including a first scale; a second scale opposed to the first scale, where the first and second scales are spaced apart to allow a blade therebetween when the blade is in a folded position; the blade including a cutting edge and a tang, where the tang connects the blade at a pivot point between the first and second scales, and where the blade includes a first protruding lug adjacent to the pivot point and within the first scale; and a locking mechanism in contact with the first and second scales; a first button on a first side of the locking mechanism that extends through the first scale; where the locking mechanism slides in relation to the first and second scales to engage and disengage the locking mechanism with the first protruding lug to move the blade into the folded position and a deployed position, respectively.

[0006] In some aspects, the present disclosure relates to a locking knife, including a handle; a first liner inside the handle; a second liner inside the handle and opposed to the first liner, where the first and second liners are spaced apart by at least a thickness of a blade when the blade is in a folded position; the blade including a cutting edge and a tang, where the tang connects the blade at a pivot point between the first and second liners, and where the blade includes a first protruding lug adjacent to the pivot point and within the first liner; and a locking mechanism including: afirst member and a second member, where the first member fits together with the second member at a top side of the locking mechanism, where the first member is in contact with the first liner and the second member is in contact with the second liner; and a first button on the first member that extends through the first liner; where the locking mechanism slides in relation to the first and second liners to engage and disengage the first member with the first protruding lug to move the blade into the folded position and a deployed position.

[0007] In some aspects, the present disclosure relates to a locking knife, including: a handle; a first liner inside the handle; a second liner inside the handle and opposed to the first liner, where the first and second liners are spaced apart to allow a blade therebetween when the blade is in a folded position; the blade including a cutting edge and a tang, where the tang connects the blade at a pivot point between the first and second liners, and whereAttorney Docket No. 1338.238.01 WO the blade includes a first protruding lug adjacent to the pivot point and within the first liner; and a locking mechanism having first and second sides, where the first side is in contact with the first liner and the second side is in contact with the second liner; a first button on the first side that extends through the first liner; where the locking mechanism slides in relation to the first and second liners to engage and disengage the first member with first protruding lug to alternatively stop and allow rotation of the blade into the folded position and a deployed position.

[0008] Various embodiments include a locking knife, where a first end of the locking mechanism engages with the first protruding lug, and further including a first spring connected to the first side of the locking mechanism at a second end of the locking mechanism, and where the first springs biases the locking mechanism towards the pivot point. Some aspects include a locking knife, where the first spring is an omega spring. Various aspects include a locking knife, where the first spring is coupled to the first scale at an end of the first spring opposing the second end of the locking mechanism.

[0009] Some embodiments include a locking knife, further including a first liner where the first protruding lug passes through or passes partially into the first liner. In some aspects, the locking mechanism is held in place at least by the first liner. In various aspects, the first side of the locking mechanism is between the first scale and the first liner. In some aspects, when the locking mechanism moves in relation to the pivot point, the first scale and the first liner stays stationary in relation to the pivot point.

[0010] Various embodiments include a locking knife, where the locking mechanism further includes posts with at least one coil spring preassembled onto the posts, and where the at least one coil springs biases the locking mechanism towards the pivot point.

[0011] In some aspects, the locking mechanism is a unified component. In various aspects, the locking mechanism further includes a second button that extends through the second scale; where the locking knife further includes a second protruding lug adjacent to the pivot point and with the second scale; and where the locking mechanism slides in relation to theAttorney Docket No. 1338.238.01 WO first and second scales to engage and disengage the locking mechanism with the first and second protruding lugs, respectively.

[0012] Various embodiments include a locking knife, where a first end of the locking mechanism engages with the first protruding lug, and further including a first spring connected to the first member at a second end of the locking mechanism, and where the first spring biases the locking mechanism towards the pivot point.

[0013] Some embodiments include a locking knife, where the locking mechanism is held in place by at least the first and second liners. In some aspects of the locking knife, the first member is between the handle and the first liner, and the second member is between the handle and the second liner. In various aspects of the locking knife, when the locking mechanism moves in relation to the pivot point, the handle and the first and second liners stay stationary in relation to the pivot point.

[0014] Various embodiments of the locking knife include where the locking mechanism further includes posts with a first coil spring preassembled onto the posts, and the first coil springs biases the locking mechanism towards the pivot point.

[0015] In some aspects of the locking knife, the locking mechanism further includes a second button on the second member that extends through the second liner; where the blade includes a second protruding lug adjacent to the pivot point and within the second liner; where the locking mechanism slides in relation to the first and second liners to engage and disengage each of the first and second members with the first and second protruding lugs, respectively. In some embodiments of the locking knife, the locking mechanism further includes a second coil spring preassembled onto the posts, and the second coil spring biases the locking mechanism towards the pivot point.

[0016] In addition to the exemplary aspects and embodiments described above, further aspects and embodiments will become apparent by reference to the drawings and by study of the following description. For example, this Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features ofAttorney Docket No. 1338.238.01 WO the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. A more extensive presentation of features, details, utilities, and advantages of the present invention as defined in the claims is provided herein in the description of various embodiments and implementations and illustrated in the accompanying drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosure can be understood by the following detailed description in conjunction with the accompanying drawings, where like reference numerals designate like structural elements, and in which:

[0018] FIG. 1 is an illustrative side view of a locking mechanism in accordance with example embodiments of the present disclosure;

[0019] FIG. 2 is an illustrative perspective view of a locking mechanism in accordance with example embodiments of the present disclosure;

[0020] FIG. 3 is an illustrative perspective view of a locking mechanism in accordance with example embodiments of the present disclosure;

[0021] FIG. 4 is an illustrative perspective view of a locking mechanism in accordance with example embodiments of the present disclosure;

[0022] FIG. 5 is an illustrative perspective view of a locking mechanism in accordance with example embodiments of the present disclosure;

[0023] FIG. 6 is an illustrative perspective view of a locking mechanism with a blade in accordance with example embodiments of the present disclosure;

[0024] FIG. 7 is an illustrative perspective view of a locking mechanism with a blade in accordance with example embodiments of the present disclosure;

[0025] FIG. 8 is an illustrative perspective view of a protruding lug and friction pads in accordance with example embodiments of the present disclosure;Attorney Docket No. 1338.238.01 WO

[0026] FIG. 9 is an illustrative perspective view of the interior of a folding knife in accordance with example embodiments of the present disclosure;

[0027] FIG. 10 is an illustrative perspective view of the interior of a folding knife in accordance with example embodiments of the present disclosure;

[0028] FIGs. 11A and 11B are illustrative perspective views of the interior of folding knives in accordance with example embodiments of the present disclosure;

[0029] FIG. 12 is an illustrative perspective view of a locking mechanism in accordance with example embodiments of the present disclosure;

[0030] FIGs. 13A, 13B, 13C, and 13D are respectively an illustrative rearview, front view, side view, and top view of a locking mechanism in accordance with example embodiments of the present disclosure;

[0031] FIG. 14 is an illustrative perspective view of a locking mechanism with a liner in accordance with example embodiments of the present disclosure;

[0032] FIGs. 15 A, 15B, 15C, and 15D are respectively an illustrative rearview, front view, interior orientation side view, and exterior orientation side view of a locking mechanism with a liner in accordance with example embodiments of the present disclosure;

[0033] FIGs. 16A and 16B are respectively an illustrative interior orientation side view, and exterior orientation side view of a locking mechanism with a liner and a spring in accordance with example embodiments of the present disclosure;

[0034] FIG. 17 is an illustrative perspective view of a locking mechanism with a blade in accordance with example embodiments of the present disclosure;

[0035] FIG. 18 is an illustrative top-side cross-sectional view of a locking mechanism spring with a scale and liner in accordance with example embodiments of the present disclosure;Attorney Docket No. 1338.238.01 WO

[0036] FIG. 19 is an illustrative perspective exploded view of a folding knife with locking mechanism in accordance with example embodiments of the present disclosure;

[0037] FIG. 20 is an illustrative perspective exploded view of a folding knife with locking mechanism in accordance with example embodiments of the present disclosure;

[0038] FIG. 21 is an illustrative perspective exploded view of a folding knife with locking mechanism and spring in accordance with example embodiments of the present disclosure;

[0039] FIG. 22 is an illustrative perspective view of a folding knife with locking mechanism in accordance with example embodiments of the present disclosure;

[0040] FIG. 23 is an illustrative perspective view of a folding knife with locking mechanism in accordance with example embodiments of the present disclosure; and

[0041] FIGs. 24A, 24B, and 24C are illustrative perspective views of a folding knife with locking mechanism in accordance with example embodiments of the present disclosure.

[0042] This Brief Description of the Drawings is not intended to identify essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. A more extensive presentation of features, details, utilities, and advantages of the present disclosure is provided in the following written description of various embodiments of the claimed subject matter and illustrated in the accompanying drawings.DETAILED DESCRIPTION

[0043] The present disclosure relates generally to a locking mechanism. More specifically, but without limitation, the present disclosure relates to systems, methods and apparatuses for a folding knife having a locking mechanism.

[0044] The word “herein” includes the descriptions provided throughout this specification, including the Field, Background, Summary, Brief Description of the Drawings, Detailed Description, Claims, and Abstract.Attorney Docket No. 1338.238.01 WO

[0045] The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0046] It is understood that, although the terms first, second, third etc. may be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present disclosure.

[0047] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms “a,” “an,” and “the” are to be construed as open ended, e.g., meaning “at least one”, and as such are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and / or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components, and / or groups but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items and may be abbreviated as “ / ”. For example, the term “and / or” when used in the context of a listing of entities, refers to the entities being present singly or in combination, and the phrase “A, B, C, and / or D” includes A, B, C, and D individually, but also includes any and all combinations and subcombinations of A, B, C, and D. As used herein, the recitation of “at least one of A, B and C” is intended to mean either A, B, C or any combination of A, B and C, unless explicitly stated otherwise.

[0048] As used herein, the terms “about” and “substantially” herein are to be construed as + / - 10%, unless stated otherwise. As used herein, every range of values (such as of the form, "from about a to about b," or, equivalently, "from approximately a to b," or,Attorney Docket No. 1338.238.01 WO equivalently, "from approximately a-b" or, equivalently, "greater than about a and less than about b", for example) disclosed herein is to be understood to set forth every number and range encompassed within the broader range of values.

[0049] As used herein, when an element is referred to as being “on,” “connected,” “attached,” “mounted,” “coupled,” or “adjacent” another element, it can be directly on, connected, coupled, or adjacent to the other element, or intervening elements may be present. For example, as used herein, the term “adjacent” can mean next to, neighboring, or abutting and in contact, but does not necessarily mean in contact unless otherwise stated. In contrast, when an element is referred to as being “directly on,” “directly connected,” “directly coupled,” or “immediately adjacent” another element, there are no intervening elements present. As used herein, the phrases “connected,” “attached,” “mounted,” “coupled,” and the like can be used interchangeably. For example, these terms can be used herein to mean a removable coupling, a fixed coupling, a movable coupling, a fixedly removable couple, a permanent coupling, and the like, unless explicitly stated otherwise.

[0050] As used herein, spatially relative terms, such as “beneath”, “below”, “lower”, “under”, “above”, “on”, “upper”, "over", and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device or system, e.g., in use or operation in addition to the orientation depicted in the figures. For example, if the device or system in the figures is turned over, elements described as “below” or “beneath” or “under” other elements or features would then be oriented “above” the other elements or features. Thus, the exemplary terms “below” and “under” can encompass both an orientation of above and below. The device or system may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein are to be interpreted accordingly. In addition, it will also be understood that when an object or component is referred to as being “between” two objects or components, the object or component can be the only object or component between the two objects or components, or one or more additional objects or components may also be present.Attorney Docket No. 1338.238.01 WO

[0051] As used herein, the term “spaced apart” refers to two or more components being positioned with a separation distance sufficient to receive another element or to permit relative movement between the components. For example, opposed scales or liners of a folding knife may be spaced apart by a distance corresponding to at least the thickness of a blade so that the blade can rotate between folded and deployed positions. The term “spaced apart” does not require the distance to be uniform along the entire length of the components and may include embodiments where the separation is maintained by fasteners, washers, or other structural elements.

[0052] It should be understood that logical operations and methodologies may be performed in any order, unless explicitly claimed otherwise or a specific order is inherently necessitated by the claim language. Additionally, some of the operations described may be skipped or not included in described methodologies. For example, in methodologies directly or indirectly set forth herein, various steps and operations are described in one possible order of operation but those skilled in the art will recognize the steps and operation may be rearranged, replaced, or eliminated without necessarily departing from the spirit and scope of the present disclosure. It is intended that all matter contained in the description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the spirit of the present disclosure as defined in the appended claims.

[0053] Embodiments of the disclosure are described herein with reference to cross-section illustrations that are schematic illustrations of embodiments (and intermediate structures) of the disclosure. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and / or tolerances, are to be expected. Thus, embodiments of the disclosure should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. Accordingly, the regions illustrated in the figures are schematic in nature and their shapes are not necessarily intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the disclosure.Attorney Docket No. 1338.238.01 WO

[0054] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and / or the present specification and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0055] Folding knife designs often balance competing goals such as materials selection, cost, safety, blade stability and strength, and ease of operation, maintenance, and repair. For example, users may want a quick-deploying blade flipper in combination with an axis lock. However, sometimes a quick-deploying blade flipper cannot be easily incorporated because it directly interferes with the blade lockup area. Also, if a flipper is added as a curved extension to the back end of the blade, this may effectively combine the attributes of an axis lock with a flipper, but the delicate geometry needed to clear the lock mechanism could be subject to breakage. In addition, the delicate geometry likely complicates heattreatment and / or blade machining operations and greatly limits blade design by forcing the flipper further down the spine. Thus, a folding knife having a robust mechanism that has improved functionality for the user while simultaneously allowing for a flipper on the folding knife would be advantageous.

[0056] FIG. 1 is a side view of a locking mechanism 100 in accordance with some embodiments of the present disclosure. In FIG. 1, the locking mechanism 100 has a first end 102 that engages with a protruding lug (not shown in FIG. 1, but see for example, 612 in FIGs. 6-1 IB and 17), a button 106, and a second end 104 that is opposite from the first end 102. The first end 102 engages with a protruding lug. The first end 102 can include a round notch shaped to clear pivot mechanisms of the knife, such as a first pivot fastener (e.g., as can be seen in FIGs. 9 and 10). The button 106 is configured to pass through a scale or handle and be accessible by a user to unlock or disengage the locking mechanism 100. In various embodiments, FIG. 1 shows one member of a locking mechanism 100 (e.g., one side of the locking mechanism), though this could also just be a first side of a two- sided locking mechanism.Attorney Docket No. 1338.238.01 WO

[0057] As used herein, the term “handle” may refer generally to the assembly that includes one or more scales, liners, and any associated fasteners or other structural members. The handle provides the gripping portion of the folding knife for a user and defines the space into which the blade is folded. In various embodiments, the handle remains stationary relative to the pivot point of the blade while the blade and locking mechanism move between folded and deployed positions. References to scales, liners, or a handle are not intended to be mutually exclusive, and the locking mechanism may be supported between a scale and a liner or directly within a handle without a liner. As used herein, the term “button” refers to a portion of the locking mechanism that is accessible to a user to reposition the locking mechanism, and in various embodiments the button extends through a scale or liner or handle.

[0058] As used herein, the term “scale” refers to an outer portion of the folding knife handle that sandwiches the blade and liners. A scale may be formed of a rigid or semi-rigid material such as metal, polymer, composite, or wood. The scales protect the blade in the folded position, provide a gripping surface for a user, and may include openings or recesses through which a button of the locking mechanism may extend. Scales may also provide support for springs that bias the locking mechanism. As used herein, the term “liner” refers to an internal structural plate positioned within the handle of the folding knife. A liner may be opposed to another liner and separated by a distance sufficient to receive the blade therebetween. Liners may provide reinforcement to the handle, support for the pivot fasteners, and guiding or seating surfaces for the locking mechanism. In some embodiments, the liner may define apertures or recesses through which a protruding lug of the blade may extend or may provide surfaces that retain the locking mechanism in position. In some aspects, the liners remain stationary relative to the pivot axis during operation, while the locking mechanism slides along or between them to engage or disengage the blade.

[0059] In various embodiments, the first end 102 of the locking mechanism 100 that engages the protruding lug may have different geometries to accommodate wear and function. For example, the front end 102 may include a flat engagement surface, a chamfered profile, and / or a radiused edge to manage contact stress and reduce binding. TheAttorney Docket No. 1338.238.01 WO engagement face of the front end 102 is arranged so that, in both the folded and deployed positions, the engagement face directly abuts the corresponding surface of the protruding lug to restrain rotation of the blade. The blade may include a cutting edge. As used herein the term “cutting edge” refers to the sharpened region of a blade that is configured to perform a cutting function. The cutting edge can be continuous or segmented, straight or curved, and may extend along one or more regions of the blade. In some embodiments, different portions of the cutting edge may have different profiles to provide different cutting characteristics.

[0060] FIG. 2 is a perspective view of a locking mechanism 200 in accordance with some embodiments of the present disclosure. In FIG. 2, the locking mechanism 200 has a first member 110a and a second member 110b (also referred to herein as a first side and a second side). The first member 110a has a first end 102a that engages with a protruding lug (not shown in FIG. 2, but see for example, 612 in FIGs. 6-1 IB and 17), a button 106a, and a second end 104a that is opposite from the first end 102a. The second member 110b has a first end 102b that engages with a protruding lug, a button 106b, and a second end 104b that is opposite from the first end 102a. The first member 110a contacts the second member 110b at a top side 108 of the locking mechanism 200 to form the locking mechanism 200. For example, the first member 110a can engage with the second member 110b at the top side 108. In some aspects, the locking mechanism 200 is configured to include posts 136 towards the second ends 104a and 104b and these posts may not have springs (as shown in FIG. 2) or they may be configured to have one or more springs (not shown in FIG. 2) disposed on the posts 136.

[0061] It should be understood that while a first and second member are described, in many instances, the locking mechanism can be a single unified component. For instance, the locking mechanism can be formed from a bent of stamped piece of sheet metal. Further, while the locking mechanism having two sides can have two springs, in other embodiments, a locking mechanism having two sides can have a single spring.

[0062] FIG. 3 is a perspective view of a locking mechanism 300 in accordance with some embodiments of the present disclosure. In FIG. 3, the locking mechanism 300 has a firstAttorney Docket No. 1338.238.01 WO member 11 Oa and a second member 110b. The first member 1 10a has a first end 102a that engages with a protruding lug (not shown in FIG. 3, but see for example, 612 in FIGs. 6- 1 IB and 17), a button 106a, and a second end 104 that is opposite from the first end 102a. The second member 110b has a first end 102b that engages with a protruding lug, a button 106b, and a second end 104 that is opposite from the first end 102b. The first member 110a contacts the second member 110b at a top side 108 of the locking mechanism 300 to form the locking mechanism 300. For example, the first member 110a can engage with the second member 110b at the top side 108.

[0063] The locking mechanism 300 also includes a first spring 332a and a second spring 332b. In various embodiments, the first spring 332a and the second spring 332b can be disposed on posts of the locking mechanism 300 (e.g., posts 136 as shown in FIG. 2). In various embodiments, the springs 332a and 332b may be preassembled onto the posts, which capture them prior to further assembly. For example, the spring may be configured to be housed in a rectangular opening in the locking mechanism body, and be retained by two protrusions on either end (e.g., posts 136) and may be acted on, and acted against, by opposing features in the scales and liners of the folding knife (see, for example, FIGs. 11 A and 18 as disclosed herein). In some aspects, only one spring (e.g., only one of the first spring 332a and the second spring 332b) is used with the locking mechanism. It should be understood that while a first and second member are described, in many instances, the locking mechanism can be a single unified component. Further, while the locking mechanism having two sides can have two springs, in other embodiments, a locking mechanism having two sides can have a single spring.

[0064] In various embodiments, in operation, the locking mechanism is movable in a sliding manner relative to the scales or liners of the folding knife. The sliding motion is generally along a direction that is transverse to the blade spine and parallel to the plane of the blade. When the button of the locking mechanism is actuated by a user, the locking mechanism translates away from the pivot axis against the bias of a spring, thereby disengaging a front end of the locking mechanism from a protruding lug of the blade. When released, the spring biases the locking mechanism to slide back toward the pivot axis so that the front end of the locking mechanism re-engages the protruding lug to secure theAttorney Docket No. 1338.238.01 WO blade in either the folded or deployed position. The sliding movement may occur within guide channels, against the interior surfaces of scales or liners, or along posts or other structural features that maintain alignment during operation.

[0065] The sliding motion of the locking mechanism provides engagement with the blade protruding lug in both the folded position and the deployed position of the blade. In the folded position, the front end of the locking mechanism is biased into contact with the lug to resist rotation of the blade out of the handle. In the deployed position, the same front end of the locking mechanism is biased into contact with the lug to resist rotation of the blade back into the handle. In both cases, user actuation of the button translates the locking mechanism away from the pivot axis against the spring bias to disengage the front end from the lug, thereby allowing the blade to rotate between positions. The blade may be allowed to alternatively rotate between positions as the locking mechanism engages and disengages. Upon release of the button, the locking mechanism slides back under spring bias to reengage the lug and secure the blade in the user’s selected position.

[0066] The locking mechanism itself may also be formed by different manufacturing methods. In some embodiments, the locking mechanism is cut or stamped from sheet metal and subsequently bent or shaped to provide the desired profile. In other embodiments, the locking mechanism is machined from billet material, such as stainless steel, titanium, or other alloys suitable for knife hardware. Still further embodiments may employ molding or sintering processes, such as metal injection molding, to form the locking mechanism as a unitary component with complex features integrated directly into the part. The choice of manufacturing method may vary, but in various aspects the locking mechanism is configured to slide relative to the handle and engage the protruding lug of the blade as described herein.

[0067] In various embodiments, the locking mechanism may be formed of two members that contact or fit together at a top side of the locking mechanism, thereby cooperating to form a movable assembly that engages or disengages a protruding lug of the blade. In some embodiments, the locking mechanism may instead be formed as a single, unified component that performs the same functions without requiring a separate first member andAttorney Docket No. 1338.238.01 WO second member. For example, a single stamped or molded part may include features corresponding to those described for the first and second members, such as opposing ends, buttons, and / or spring engagement regions. Thus, whether the locking mechanism is implemented as two cooperating members or as a single unified member, the functionality of sliding in relation to the scales or liners to engage and disengage the blade remains similar.

[0068] FIG. 4 is a perspective view of a locking mechanism 400 in accordance with some embodiments of the present disclosure. In FIG. 4, the locking mechanism 400 has a first member 110a and a second member 110b. The locking mechanism 400 has a first end 102a and 102b that each engage with respective protruding lugs (not shown in FIG. 4, but see for example, 612 in FIGs. 6-1 IB and 17) and buttons 106a and 106b. The locking mechanism also has a second end 104 that is opposite from the first end 102a and 102b. The first member 110a contacts the second member 110b at a top side 108 of the locking mechanism 400 to form the locking mechanism 400. For example, the first member 110a can engage with the second member 110b at the top side 108. The locking mechanism 400 also includes a first spring 432a and a second spring 432b. In various embodiments, the first spring 432a and the second spring 432b can be disposed on posts of the locking mechanism 400 (e.g., similar to posts 136 as shown in FIG. 2). In various embodiments, the springs 432a and 432b can be installed on the locking mechanism 400 prior to assembly. In some embodiments, only one spring (e.g., only one of the first spring 432a and the second spring 432b) may be included in the folding knife (e.g., only one spring on one side of the locking mechanism). In various aspects, while a first and second member are described, in many instances the locking mechanism can be a single unified component. Further, while the locking mechanism having two sides can have two springs, in other embodiments, a locking mechanism having two sides can have a single spring. Still further, while a single unified locking mechanism having two sides can have two springs, in other embodiments, a single unified locking mechanism having two sides can have a single spring.

[0069] FIG. 5 is a perspective view of a locking mechanism 500 in accordance with some embodiments of the present disclosure. In FIG. 5, the locking mechanism 500 has a firstAttorney Docket No. 1338.238.01 WO member 11 Oa and a second member 110b. The first member 1 10a has a first end 102a that engages with a protruding lug (not shown in FIG. 5, but see for example, 612 in FIGs. 6- 1 IB and 17), a button 106a, and a second end 104 that is opposite from the first end 102a. The second member 110b has a first end 102b that engages with a protruding lug, a button 106b, and a second end 104 that is opposite from the first end 102b. The first member 110a contacts the second member 110b at a top side 108 of the locking mechanism 500 to form the locking mechanism 500. For example, the first member 110a can engage with the second member 110b at the top side 108. Although not shown in FIG. 5, the second ends 104 and 104 are shaped to engage one end of a spring, such as an omega spring, the spring being configured to bias the locking mechanism 500 forward toward a pivot axis of the knife (e.g., see FIG. 7).

[0070] As used herein, the term “pivot axis” refers to an axis about which the blade rotates between the folded and deployed positions, e.g., extending through a pivot fastener or pivot hole. As used herein, the term “springs” includes any type of spring, including omega springs or coil springs, and the spring(s) may be coupled to various structural elements of the folding knife. For example, a spring may be connected to a second end of the locking mechanism, to a post extending from the locking mechanism, to a surface of a liner, or to a structure on a scale. Coupling may be achieved, for example, by mechanical fit, recesses, channels, fasteners, or by capturing the spring between opposed surfaces such that movement of the locking mechanism deflects the spring. The coupling arrangement maintains biasing force on the locking mechanism while permitting sliding motion relative to the scales or liners. As used herein, the term “omega spring” refers to a resilient spring element having a generally curved or looped profile generally resembling the shape of the Greek letter . In some aspects, an omega spring may include two opposing arms joined by a curved middle region. The ends of the arms can be configured to press against different components of the folding knife, e.g., so that deflection of the spring biases the locking mechanism toward or against the pivot axis.

[0071] Spring(s) used with the locking mechanism, including omega springs and coil springs, may be manufactured using a variety of processes. In some embodiments, an omega spring may be formed from spring wire bent into a generally looped profile havingAttorney Docket No. 1338.238.01 WO two opposing arms joined by a curved region. In other embodiments, an omega spring may be stamped or cut from sheet material and then heat-treated to provide resilient properties. Omega springs or other biasing elements may also be produced by molding or sintering processes, such as metal injection molding, to integrate complex geometries or to facilitate mass production. Regardless of the manufacturing method, the springs are sized and configured to deflect when the locking mechanism slides relative to the handle, thereby providing a restoring bias toward engagement with the protruding lug of the blade.

[0072] It should be understood that while a first and second member are described in various embodiments herein, in many instances, the locking mechanism can instead be a single unified component. Further, while the locking mechanism having two sides can have two springs, in other embodiments, a locking mechanism having two sides can have a single spring. Still further, while a single unified locking mechanism having two sides can have two springs, in other embodiments, a single unified locking mechanism having two sides can have a single spring.

[0073] FIG. 6 is a perspective view of a locking mechanism 600 with a blade 650 in accordance with some embodiments of the present disclosure. In FIG. 6, the locking mechanism has a first member 110a and a second member 110b. The first member 110a has a first end 102 that engages with a protruding lug 612 on blade 650, a button 106a, and a second end 104 that is opposite from the first end 102. The second member 110b may have a similar design as the first member 110a, such as button 106b. As used herein, a “protruding lug” is a portion of the tang adjacent the pivot point that projects radially into the path of the locking mechanism to limit blade rotation. In some embodiments, the first member 110a contacts the second member 110b at atop side 108 of the locking mechanism to form the locking mechanism. For example, the first member 110a can engage with the second member 110b at the top side 108. In various aspects, the protruding lug 612, although only shown on one side of blade 650 in FIG. 6 is configured to also be present on the opposite side of blade 650 in a same position so that it interacts with the locking mechanism in a same position and manner on each side of blade 650. In some aspects, the protruding lug 612 is configured to be formed on a partial portion of the circumference of a hole (or pivot hole; e.g., the hole through the blade within the pivot point) at a pivot pointAttorney Docket No. 1338.238.01 WO620 on the blade 650. For instance, the protruding lug 612 may span an arc between roughly 8 o’clock and 4 o’clock when the blade 650 is deployed.

[0074] In various embodiments, by engaging with the protruding lug 612 in the pivot point area, a clearance is created for a flipper 690, which advantageously allows it to be placed further up the spine. As used herein, the term “flipper” refers to an area on the spine of a blade that extends outward from the handle when the blade is folded and is configured to be pressed by a user to rotate the blade to a deployed position. For example, the flipper may be located at a position on the spine that is more rearward (e.g., towards the rear of the knife or further away from the tip of the blade when the knife is in a deployed position), and the flipper may be arranged below or in-line with the pivot point or hole at the pivot point 620. In various embodiments, if the folding knife has an axis that extends vertically through the pivot point so that it is perpendicular to the spine of the blade 650, then the flipper may be arranged below or in-line with the axis. Advantageously, the placement of flipper 690 also can provide a user a mechanical advantage when operating the blade 650 of the folding knife (e.g., the more rearward position of the flipper 690 when the blade 650 is deployed provides greater torque than a more forwardly-positioned flipper 690). This design also allows for the locking mechanism to have a button 106a placement in multiple areas of the knife. A washer 622 is adjacent to and surrounding the hole at the pivot point 620 on the blade 650. It should be understood that while a first and second member are described, in many instances, the locking mechanism can be a single unified component.

[0075] FIG. 7 is a perspective view of a locking mechanism 700 with a blade 650 in accordance with some embodiments of the present disclosure. In FIG. 7, the locking mechanism has a first member 110a and a second member 110b. The first member 110a has a first end 102 that engages with a protruding lug 612 on blade 650, a button 106, and a second end 104 that is opposite from the first end 102. In various aspects, the first member 110a contacts the second member 110b at a top side 108 of the locking mechanism to form the locking mechanism. For example, the first member 110a can engage with the second member 110b at the top side 108. Springs, for example omega springs, 132a and 132b, are connected to the second end 104 of the locking mechanism.Attorney Docket No. 1338.238.01 WO

[0076] The protruding lug 612, although only shown on one side of blade 650 in FIG. 7, may also be present on the opposite side of blade 650 in a same position so that it interacts with the locking mechanism in a same position and manner on each side of blade 650. The protruding lug 612 may be formed on a partial portion of the circumference of a hole at a pivot point 620 on the blade 650. In some embodiments, friction pads 640 are adjacent to and surrounding the hole at the pivot point 620 on the blade 650, and reduce friction between the blade 650 and surrounding surfaces when the blade 650 is rotated. Where the blade 650 is formed via a molding or sintering process such as metal injection molding (MIM), the friction pads 640 can be molded during blade manufacturing. Similar friction pads may be included on the locking mechanism to reduce friction when the locking mechanism is moved in and out of engagement with the protruding lug.

[0077] FIG. 8 is a perspective view of a protruding lug with friction pads 640 in accordance with some embodiments of the present disclosure. In FIG. 8, a hole at the pivot point 620 of the blade 650 may be partially surrounded by a protruding lug 612 and friction pads 640. Although only one side of the blade 650 is shown, the opposite side of blade 650 may have a same configuration. The hole for the pivot point 620, protruding lugs 612 and friction pads 640 may be on a tang of blade 650; thus, when the blade is assembled with a handle or scales, for example, the hole for the pivot point 620, protruding lugs 612 and friction pads 640 may be hidden within the handle or scales. As used herein, the term “tang” refers to the portion of the blade that extends into the handle or between opposing scales or liners and that supports the blade at its pivot point. The tang may include one or more structural features such as holes, shoulders, or protruding lugs that interact with pivot fasteners, washers, locking mechanisms, or other components of the folding knife. The tang may be integral with the blade and may vary in shape depending on the particular knife design.

[0078] Blade grind can affect a knife’s cutting operation. For instance, a convex or hollow grind allows for a thinner blade. A flat (or even convex) grind tends to provide a more robust long-lasting blade due to the additional supporting material. Some blades even have two distinct grinds at different regions of the blade. While grind transitions may be implemented, they are difficult to implement in manufacturing and typically involve two discrete grind regions with a sharp transition between them.Attorney Docket No. 1338.238.01 WO

[0079] The blade tip is more susceptible to breakage, thus a flat or convex grind increases the material in this region and hence the strength. This is a tradeoff with potential cutting ability where a hollow grind is better. Molding or sintering methods, such as metal injection molding (MIM), allow a smooth transition between these two “grind” regions. Additionally, the dimensions of the two or more different grind regions can more easily be selected (e.g., with a deeper hollow region and a shallower flat region, or a heavily convex tip flowing into a progressively more concave (hollow) region toward the tang).

[0080] In some embodiments, friction control pads may be positioned at an area of the blade corresponding to or surrounding the pivot point. These pads can provide flat areas to laterally support the blade while reducing friction between surfaces, which reduces the amount of force needed to rotate the blade or actuate the locking mechanism. In various aspects, a washer may be in contact with these pads and concentrically arranged relative to the hole. Additionally, in some aspects, the empty regions between the pads can allow for grit clearance which assists in preventing particulates from getting between the blade and washer. Further, the friction control pads may be included on the locking mechanism to give similar added benefits. Friction control pads may not be included in various embodiments of the present disclosure. The friction control pads may be integral with the blade and may vary in shape depending on the particular knife design.

[0081] Various manufacturing methods can be used to form a protruding lug and a friction pad. The tang of the blade, including features such as protruding lugs and friction pads, may also be manufactured by various techniques. In some embodiments, the protruding lugs and friction pads are formed integrally with the blade by machining or grinding operations around the pivot hole. In various embodiments, the protruding lugs and friction pads may be formed during molding or sintering processes, such as metal injection molding, so that they are integral to the tang as manufactured. Still further embodiments may include lugs or pads that are added to the tang surface by welding, brazing, or other attachment methods. The selection of manufacturing method may depend on various aspects, such as blade material, desired geometry, and production volume. In some embodiments, the tang region of the blade is machined, forged, or stamped to produce the protruding lug and friction pad. Various methods may be used together to produce differentAttorney Docket No. 1338.238.01 WO elements in a same knife. In other embodiments, the blade may be produced by one or more molding or sintering processes, and the protruding lug and friction pads may be integrally formed during manufacturing. Tolerances for the protruding lug and the friction pads may be selected so that the locking mechanism engages the protruding lug securely while still permitting smooth blade rotation.

[0082] FIG. 9 is a perspective view of an interior of a folding knife 900 in accordance with some embodiments of the present disclosure. In FIG. 9, an interior of a folding knife 900 is shown because a scale and liner are hidden in order to expose the locking mechanism and blade 650 within the folding knife. For example, a first pivot fastener 624 (also referred to herein, in some embodiments, as a pivot screw) extends through the scale, liner, and blade, and protrudes through the washer 622 and acts as the pivot point for the blade 650 to rotate to within or outside of the scales and liners (e.g., between a folded and a deployed state). The first pivot fastener 624 is configured to engage with a second pivot fastener (not shown, but see for example, 626 in FIGs. 19, 20, 22, and 24A-24C). For instance, the first pivot fastener 624 could include inner threads while the second pivot fastener could be a screw configured to threadingly engaged with the inner threads of the first pivot fastener 624. In FIG. 9, although only one side of the blade 650 is shown, the opposite side of blade 650 may have a same configuration (e g., a corresponding protruding lug and washer). As discussed herein, the protruding lugs 612 may be on the tang of blade 650; thus, when the blade is assembled (e.g., with scales and liners), the washers 622 and protruding lugs 612 may be hidden within the scales.

[0083] As shown in FIG. 9, the blade 650 is in a folded state and the front end 102a of the locking mechanism is engaged against the protruding lug 612 to hold the blade 650 in the folded position. In various embodiments, the spring 132 on the locking mechanism is biased to keep the front end 102a of the locking mechanism engaged against the protruding lug 612 to hold the blade 650 in a users’ desired position. For example, if a user were to move the button 106 away from the first pivot fastener 624 (e.g., rearward) and compress the spring 132, the locking mechanism would move away from the first pivot fastener 624 and allow the blade 650 to rotate to a deployed position (e.g., as shown in FIGs. 6, 7, 17,Attorney Docket No. 1338.238.01 WO22 and 24C). As discussed herein, in various embodiments, the locking mechanism may not have a spring.

[0084] FIG. 10 is a perspective view of an interior of a folding knife 1000 in accordance with some embodiments of the present disclosure. In FIG. 10, an interior of a folding knife 1000 is shown because the scales and liners are hidden in order to expose the locking mechanism and blade 650 within the folding knife. For example, a first pivot fastener (not shown, but see for example, 624 in FIGs. 9, 11A-11B, 19, 20, and 24A-24C) extends through the scale, liner, and blade, and protrudes through the washer 622 and acts as the pivot point for the blade 650 to rotate to within or outside of the scales (e.g., between a folded and a deployed state). A second pivot fastener 626 is configured to engage with the first pivot fastener. For instance, the first pivot fastener could include inner threads while the second pivot fastener 626 could be a screw configured to threadingly engaged with the inner threads of the first pivot fastener. In some embodiments, the first pivot fastener could include inner threads while the first pivot fastener could be a screw configured to threadingly engaged with the inner threads of the second pivot fastener 626. In FIG. 10, although only one side of the blade 650 is shown, the opposite side of blade 650 may have a same configuration (e.g., a corresponding protruding lug and washer). As discussed herein, the protruding lugs 612 may be on the tang of blade 650; thus, when the blade is assembled (e.g., with scales), the washers 622 and protruding lugs 612 may be hidden within the scales.

[0085] As shown in FIG. 10, the blade 650 is in a folded state and the front end 1002a of the locking mechanism is engaged against the protruding lug 612 to hold the blade 650 in the folded position. In various embodiments, the springs 132a and 132b on the locking mechanism are biased to keep the front end 1002a of the locking mechanism engaged against the protruding lug 612 to hold the blade 650 in a users’ desired position. For example, if a user were to move the button 106 away from the first pivot fastener 624 and compress the springs 132a and 132b, the locking mechanism would move away from the first pivot fastener 624 and allow the blade 650 to rotate to a deployed position (e.g., as shown in FIGs. 7 and 22). As discussed herein, the springs 132a and 132b may be omega springs.Attorney Docket No. 1338.238.01 WO

[0086] FIG. 11 A is an illustrative perspective view of the interior of a folding knife 1100 A in accordance with some embodiments of the present disclosure. In FIG. 11 A, an interior of a folding knife 1100A is shown because a scale, blade, and a first side of the locking mechanism are hidden in order to expose an interior surface of a second liner 142b, a second spring 132b, and portions of a second side of the locking mechanism (e.g., at the top side 108 of the locking mechanism) and portions of the second scale 140b of the folding knife. For example, a first pivot fastener 624 is shown extending through the second liner 142b. In FIG. 11 A, an opening 1128 in the second liner 142b is positioned along a portion of the circumference around the first pivot fastener 624 so that a protruding lug on a blade (not shown in FIG. 11A, but see for example, 612 in FIGs. 6-1 IB and 17) may extend through the liner to interface with the front end 102b of the locking mechanism. For example, the spring may be acted on, and acted against, by opposing features in the scales and liners of the folding knife. The opening 1128 in the second liner 142b and corresponding positioning of the adjacent scale may advantageously provide a blade stop for stopping the rotation of the lateral lug that is reinforced by the structure of the liner and the scale. The second liner 142b may be held in place at least partly by its shape and position within the second scale 140b. Although not shown, the first pivot fastener (see e.g., 624 in FIGs. 9, 11A-11B, 19, 20, and 24A-24C) is configured to threadingly engage with a second pivot fastener (not shown in FIG. 11 A, but see for example, 626 in FIGs.19, 20, 22, and 24A-24C) inserted via an opposing side of the blade 650. For instance, the first pivot fastener can have inner threads while the second pivot fastener can be a screw that threads into the first pivot fastener.

[0087] As shown as an illustrative embodiment in FIG. 11A, the second spring 132b extends through a corresponding hole in the second liner 142b so that it is held in place being positioned between the second scale 140b and the second liner 142b. For example, the locking mechanism may be assembled so that it rests on the scale and the liner. As explained herein, as the locking mechanism moves, the scale and liner stay stationary; thus, the spring is compressed as the scale and liner move and thereby causes increased bias towards the pivot point of the folding knife in order to hold the locking mechanism against the pivot point and lock the protruding lugs into position. In various embodiments, only one spring is configured to be used with the locking mechanism.Attorney Docket No. 1338.238.01 WO

[0088] FIG. 1 IB is an illustrative perspective view of the interior of a folding knife 1100B in accordance with some embodiments of the present disclosure. In FIG. 1 IB, an interior of a folding knife 1100B is shown because a scale and a first side of the locking mechanism are hidden in order to expose a blade 650, an interior surface of a second liner 142b, and portions of a second side of the locking mechanism (e.g., at the top side 108 of the locking mechanism) and portions of the second scale 140b of the folding knife. For example, a first pivot fastener 624 is shown extending through the blade 650. In FIG. 1 IB, the protruding lug 612 and friction pads 640 are positioned around portions of the circumference around the first pivot fastener 624. In some embodiments, the first pivot fastener 624 can be part of the second liner 142b.

[0089] In some embodiments, the first protruding lug of the blade may extend through or partially into an opening of the first liner. For example, the liner may define an aperture adjacent the pivot axis through which at least a portion of the lug projects so that it can be contacted by the front end of the locking mechanism. In other embodiments, the lug may extend only partially into the liner so that it seats within a recess or notch of the liner without fully passing through. Whether fully passing through or partially entering the liner, the arrangement provides a positive stop surface for the locking mechanism while permitting the liner to reinforce the interface between the lug and the locking mechanism.

[0090] In some embodiments, the locking mechanism may be held in place at least partly by the liner. For example, the liner may provide lateral surfaces or guide channels that maintain the position of the locking mechanism between the scale and the blade tang. In such arrangements, the liner can advantageously reinforce the stability of the locking mechanism during sliding movement and engagement with the protruding lug.

[0091] In certain embodiments, the first side of the locking mechanism is positioned between the first scale and the first liner. For example, the locking mechanism may slide along an interior surface of the liner while the scale covers the button portion of the mechanism. This arrangement maintains accessibility of the button to the user while also protecting the locking mechanism within the handle structure.Attorney Docket No. 1338.238.01 WO

[0092] Various components (e.g., the scale, and liner, and the handle) may remain stationary in relation to the pivot point when the locking mechanism is actuated. In such embodiments, the locking mechanism slides relative to the pivot axis while the scale and liner are fixed components of the handle. As a result, actuation of the button causes translation of the locking mechanism without movement of the adjacent scale or liner.

[0093] In some embodiments, the locking mechanism may further include one or more posts, and a coil spring may be preassembled onto each post prior to assembly of the folding knife. The spring may be retained on the post by opposing protrusions or recesses and, once assembled, biases the locking mechanism toward the pivot point. This configuration allows the spring to be captured in the locking mechanism as a subassembly, thereby simplifying assembly of the folding knife.

[0094] FIG. 12 is a perspective view of a locking mechanism 1200 in accordance with some embodiments of the present disclosure. In FIG. 12, the locking mechanism 1200 is shown as one member 110. The member 110 has a first end 102 that engages with a protruding lug (not shown in FIG. 12, but see for example, 612 in FIGs. 6-1 IB and 17), a button 106, and a second end 104 that is opposite from the first end 102. The member 110 may contact another member (not shown in FIG. 12) at a top side 108 of the locking mechanism 1200. In some aspects, the locking mechanism 1200 is configured to include a protrusion 710 on a side surface of the locking mechanism (e.g., an interior side surface). The protrusion 710 may be adjacent a post 136, may be in about a middle position in the member 110, or may be in other locations on the member 110. In various embodiments, when there are two members of the locking mechanism, each member may have a protrusion 710, or only one or the other member may have a protrusion 710. If each member has a protrusion, the protrusion on one member may be in a different location than on the other member, or each protrusion on each of the members may be in a same position so that each protrusion interact with the respective liner (e.g., via a respective opening) in a same position and a same manner on either side of the folding knife.

[0095] In various embodiments, the protrusion 710 may be a positive protrusion that can have different geometries to accommodate wear and function. For example, the protrusionAttorney Docket No. 1338.238.01 WO710 may include a flat engagement surface, a chamfered profile, and / or a radiused edge to manage contact stress and reduce binding. The protrusion 710 may extend inward from a surface of the locking mechanism 100 at approximately a 90-degree angle and may interface with a liner (not shown in FIG. 12, but see for example FIGs. 13A-13D, 14, 15A- 15D, and 16A-16B).

[0096] FIG. 13 A is a rear view of one member 110 of a locking mechanism (e.g., a view aligned from the rear of the member 110 when the knife is in a deployed position) in accordance with some embodiments of the present disclosure. In FIG. 13A, the locking mechanism is shown as one member 110. In FIG. 13 A, the member 110 has a second end 104, a top side 108, a button 106, and a protrusion 710 extending from an inside surface of the member 110.

[0097] FIG. 13B is a front view of one member 110 of a locking mechanism (e.g., a view aligned from the front of the member 110 when the knife is in a deployed position) in accordance with some embodiments of the present disclosure. In FIG. 13B, the locking mechanism is shown as one member 110. In FIG. 13B, the member 110 has a first end 102, a top side 108, a button 106, and a protrusion 710 extending from an inside surface of the member 110.

[0098] FIG. 13C is a side view of one member 110 of a locking mechanism in accordance with some embodiments of the present disclosure. In FIG. 13C, the locking mechanism is shown as one member 110. In FIG. 13C, an interior surface of the member 110 is shown with the first end 102, the second end 104, the top side 108, and the protrusion 710 extending from the inside surface.

[0099] FIG. 13D is a top view of one member 110 of a locking mechanism in accordance with some embodiments of the present disclosure. In FIG. 13D, the locking mechanism is shown as one member 110. FIG. 13D shows a top side 108, a first end 102, a second end 104, a button 106, and a protrusion 710 extending from the inside surface of the member 110.Attorney Docket No. 1338.238.01 WO

[0100] FIG. 14 shows a perspective view of one member 1 10 of a locking mechanism with a liner 1400 in accordance with some embodiments of the present disclosure. In FIG. 14, the locking mechanism is shown as one member 110 interfacing with a liner 142. FIG. 14 shows a top side 108, a first end 102, a post 136, and a protrusion 710 of the member 110 together with the liner 142. As shown in FIG. 14, the protrusion 710 may extend inward from a surface of the locking mechanism 100 at approximately a 90-degree angle and may interface with the liner 142. The protrusion 710 may extend into an opening 720 in the liner 142, where the opening 720 is larger than the protrusion 710 but configured to allow the protrusion 710 to slide back and forth within the opening 720 while sides of the protrusion 710 remain directly adjacent to sides of the opening 720 in the liner 142 (e.g., the liner 142 may remain stationary relative to the pivot axis during operation, while the member 110 of the locking mechanism slides alongside the liner 142 to engage or disengage the blade while the protrusion 710 slides within the opening 720 of the liner 142). In various aspects, the protrusion 710 may extend into a same vertical plane as the liner and may “tie” any rotational forces that the lock encounters into the liners (e.g., when using the knife, such as cutting with the blade). The configuration of the protrusion 710 with the locking mechanism may advantageously increase overall strength of the locking mechanism by helping to distribute the load from the locking mechanism into the metal liners (e.g., through contact of the protrusion 710 with the liner 142). In various aspects, the protrusion 710 has engagement faces that directly abut interior surfaces of an opening 720 in the liner 142 to distribute the load from the locking mechanism into the liner 142.

[0101] FIG. 15A is a rear view of one member 110 of a locking mechanism with a liner (e g., a view aligned from the rear of the member 110 when the knife is in a deployed position) in accordance with some embodiments of the present disclosure. In FIG. 15 A, the locking mechanism is shown as one member 110. In FIG. 15A, the member 110 has a second end 104, a top side 108, a button 106, and the protrusion is not shown because it is extending within the liner 142.

[0102] FIG. 15B is a front view of one member 110 of a locking mechanism with a liner (e g., a view aligned from the front of the member 110 when the knife is in a deployed position) in accordance with some embodiments of the present disclosure. In FIG. 15B, theAttorney Docket No. 1338.238.01 WO locking mechanism is shown as one member 110. Tn FIG. 15B, the member 110 has a first end 102, a top side 108, a button 106, and the protrusion is not shown because it is extending within the liner 142.

[0103] FIG. 15C is a side view of one member 110 of a locking mechanism with a liner in accordance with some embodiments of the present disclosure. In FIG. 15C, the locking mechanism is shown as one member interfaced with a liner with the view from an interior side of the liner 142 and member 110. In FIG. 15C, the member 110 and liner 142 are shown with the first end 102, a post 136, the top side 108, and the protrusion 710 extending from the inside surface of the member 110 into an opening 720 in the liner 142.

[0104] FIG. 15D is a side view of one member 110 of a locking mechanism with a liner in accordance with some embodiments of the present disclosure. In FIG. 15D, the locking mechanism is shown as one member 110 interfaced with a liner with the view from an exterior side of the liner 142 and member 110. In FIG. 15D, the member 110 and liner 142 are shown with the first end 102, the second end 104, posts 136, the top side 108, and the button 106 interfacing with the liner 142.

[0105] FIG. 16A shows an interior orientation side view of one member 110 of the locking mechanism with the liner 1600A, where the member 110 of the locking mechanism includes a spring 132 in accordance with some embodiments of the present disclosure. In FIG. 16A, the locking mechanism is shown as one member 110 interfaced with a liner 142 with the view from an interior side of the liner 142 and member. In FIG. 16 A, the member 110 and liner 142 are shown with the first end 102, a spring 132, the top side 108, and the protrusion 710 extending from the inside surface of the member 110 into an opening 720 in the liner 142.

[0106] FIG. 16B shows an exterior orientation side view of one member 110 of the locking mechanism with the liner 1600B, where the member 110 of the locking mechanism includes a spring 132 in accordance with some embodiments of the present disclosure. In FIG. 16B, the locking mechanism is shown as one member 110 interfaced with a liner 142 with the view from an exterior side of the liner 142 and member 110. In FIG. 16B, the member 110 and liner 142 are shown with the first end 102, the second end 104, a springAttorney Docket No. 1338.238.01 WO132, the top side 108, and the protrusion is not shown because it is on the other side (e.g., the inside surface of the member 110).

[0107] FIG. 17 is a perspective view of a locking mechanism and liners with a blade 1700 in accordance with some embodiments of the present disclosure. In FIG. 17, the locking mechanism has a first member 110a and a second member 110b. Liners 142 are positioned adjacent to the locking mechanism and extending alongside the tang of the blade 650. In various embodiments, the liners are in contact with interior surfaces of the locking mechanism and the spring 132 at least partially extends into the liner 142 (e.g., as shown in FIG. 11 A). The spring may be held in place by being positioned between the scale (not shown in FIG. 17, but see for example 140 (or 140a and 104b) in FIGs. 11A, 11B, and FIGs. 18-24C) and the liner 142. As explained herein, as the locking mechanism moves, the scale and liner 142 stay stationary; thus, the spring 132 is compressed as the scale and liner 142 move and thereby causes increased bias towards the pivot point of the folding knife in order to hold the locking mechanism against the pivot point and lock the protruding lugs (e.g., protruding lug 612) into position.

[0108] As shown in FIG. 17, the blade 650 is in a deployed state and the front end 102a of the locking mechanism is engaged against the protruding lug 612 to hold the blade 650 in the deployed position. In various embodiments, the spring(s) (e.g., spring 132a) on the locking mechanism is biased to keep the front end 102a of the locking mechanism engaged against the protruding lug 612 to hold the blade 650 in a users’ desired position. For example, if a user were to move the button 106 away from the hole at the pivot point 620 and compress the spring 132a, the locking mechanism would move away from the hole at the pivot point 620 and allow the blade 650 to rotate to a folded position. As discussed herein, in various embodiments, the locking mechanism may not have a spring. In FIG. 17, although only one side of the blade 650 is shown, the opposite side of blade 650 is configured to have a same configuration (e.g., a corresponding protruding lug and washer). As discussed herein, the protruding lugs 612 may be on the tang of blade 650; thus, when the blade is assembled (e.g., with scales), the protruding lugs 612 (and any washers, not shown, but see for example, 622 (or 622a and 622b) in FIGs. 9, 10, 19, and 20) may be hidden within the scales.Attorney Docket No. 1338.238.01 WO

[0109] FIG. 18 is an illustrative top-side cross-sectional view of a locking mechanism spring with a scale and liner in accordance with some embodiments of the present disclosure. FIG. 18 shows that the spring 132 is within the second end 104 of the locking mechanism and held in place between the scale 140 and the liner 142. As discussed herein, the spring 132 on the locking mechanism may be biased to keep a front end of the locking mechanism engaged against a protruding lug (not shown in FIG. 18, but see for example, 612 in FIGs. 6-1 IB and 17) to hold a blade (not shown, but see for example, 650 in various figures herein) in a users’ desired position. When a user moves a button (not shown, but see for example, 106 (or 106a and 106b) in various figures herein) on the locking mechanism, the locking mechanism moves while the scale 140 and liner 142 remain stationary in relation to the locking mechanism. Thus, for example, the spring may be acted on, and acted against, by opposing features in the scales and liners of the folding knife.

[0110] FIG. 19 is an illustrative perspective exploded view of a folding knife with locking mechanism in accordance with example embodiments of the present disclosure. FIG. 19 shows the first scale 140a and second scale 140b and the first liner 142a and second liner 142b, with first member 110a and second member 110b of the locking mechanism positioned therebetween. The folding knife includes a first washer 622a and a second washer 622b positioned around pivot points of the blade 650 and between the blade 650 and respective first liner 142a and second liner 142b. The first pivot fastener 624 and the second pivot fastener 626 will connect the blade 650, first washer 622a and second washer 622b, first liner 142a and second liner 142b, and first scale 140a and second scale 140b together. The screw 260 and clip 270 will further connect the first scale 140a and second scale 140b together. When the elements of the folding knife 1900 are connected together, the first member 110a of the locking mechanism is held in place between the first liner 142a and the first scale 140a, and the second member 110b of the locking mechanism is held in place between the second liner 142b and the second scale 140b.

[0111] FIG. 20 is a second illustrative perspective exploded view of a folding knife with locking mechanism in accordance with example embodiments of the present disclosure. FIG. 20 shows the first scale 140a and the second scale 140b, with first member 110a and second member 110b of the locking mechanism positioned therebetween. First spring 132aAttorney Docket No. 1338.238.01 WO is connected to first member 110a of the locking mechanism and the other end of the first spring 132a connected to the first scale 140a. Second spring 132b is connected to second member 110b of the locking mechanism with the other end of the second spring 132b connected to the second scale 140b The folding knife includes first washer 622a and second washer 622b positioned around pivot points of the blade 650 and between the blade 650 and the respective first scale 140a and second scale 140b. The first pivot fastener 624 and second pivot fastener 626 will connect the blade 650, first washer 622a and second washer 622b, and first scale 140a and second scale 140b together. The screw 260 and clip 270 will connect the first scale 140a and the second scale 140b together. When the elements of the folding knife 2000 are connected together, the first member 110a of the locking mechanism and the second member 110b of the locking mechanism are held in place between the first scale 140a and the second scale 140b. .

[0112] FIG. 21 is an illustrative perspective exploded view of a folding knife with locking mechanism and spring 2100 in accordance with some embodiments of the present disclosure. FIG. 21 shows a locking mechanism 100, a spring 132, and a scale 140. The locking mechanism 100 has a button 106 and one side of a second end 104. The button 106 extends through an opening 1607 in the scale 140 when the folding knife is assembled. A first end 133 of spring 132 attaches to the second end 104a of locking mechanism 100 (e.g., one side of the second end of the locking mechanism) and a second end 134 of spring 132 attaches to structure 280 on scale 140 when the folding knife is assembled. In various embodiments, the spring 132 attached to the locking mechanism 100 is biased to keep the locking mechanism engaged against a protruding lug (not shown in FIG. 21, but see for example, 612 in FIGs. 6-1 IB and 17) to hold the blade (not shown, but see for example, 650 in various figures herein) in a users’ desired position.

[0113] FIG. 22 is an illustrative perspective view of a folding knife with locking mechanism 2200 in accordance with some embodiments of the present disclosure. In FIG. 22, the folding knife with locking mechanism 2200 is fully assembled and in a deployed position. It has a blade 650, a first scale 140a, a second scale 140b, a first pivot fastener (not shown, but see for example, 624 in FIGs. 9, 11 A-l IB, 19, 20, and 24A-24C), second pivot fastener 626, and a button 106. FIG. 22 also shows an opening 692 that correspondsAttorney Docket No. 1338.238.01 WO to where a position of a flipper 690 is located when the blade is in a folded position (for example, see FIGs. 24A and 24B). For example, in various embodiments, the locking mechanisms disclosed herein advantageously allow the flipper to be placed further up the spine, e.g., in a position that is more rearward (e.g., towards the rear of the knife or further away from the tip of the blade when the knife is in a deployed position).

[0114] FIG. 23 is an illustrative perspective view of a folding knife with locking mechanism 2300 in accordance with some embodiments of the present disclosure. In FIG. 23, the folding knife with locking mechanism 2300 is fully assembled and in a deployed position. It has a blade 650, a first scale 140a, a second scale 140b, and a button 106. The pivot fasteners are not shown in this illustration. FIG. 23 also shows an opening 692 that corresponds to where a position of a flipper 690 is located when the blade is in a folded position (for example, see FIGs. 24 A and 24B).

[0115] FIG. 24A is an illustrative front-side perspective view of a folding knife with locking mechanism 2400A in accordance with some embodiments of the present disclosure. FIG. 24A shows the folding knife in a folded position with the first scale 140a and the second scale 140b, the blade 650, the second pivot fastener 626, the button 106, and the flipper 690.

[0116] FIG. 24B is an illustrative back-side perspective view of a folding knife with locking mechanism 2400B in accordance with some embodiments of the present disclosure. FIG. 24B shows the folding knife in a folded position with the first scale 140a and the second scale 140b, the blade 650, the button 106, the first pivot fastener 624, the pocket clip 270, and the flipper 690. The design of the locking mechanism disclosed herein provides several further advantages. For example, in some aspects, the button 106 is configured to be located on both sides of the folding knife for ease of use and ambidextrous use. Also, the location of the locking mechanism as disclosed herein may advantageously allow for button 106 placement in multiple areas of the folding knife. In various aspects, the flipper 690 to open the blade is configured to be located in a position that does not interfere with the blade lockup area and allows for variations in blade design by being located further up the spine than in other designs. For example, the flipper may be locatedAttorney Docket No. 1338.238.01 WO at a position on the spine that is more rearward (e g., towards the rear of the knife or further away from the tip of the blade when the knife is in a deployed position), and the flipper may be arranged below or in-line with the pivot point or hole at the pivot point 620.

[0117] In various embodiments, if the folding knife has an axis that extends vertically through the pivot point so that it is perpendicular to the spine of the blade 650, then the flipper may be arranged below or in-line with the axis. The location of the locking mechanism as disclosed herein may advantageously allow for clearance for the flipper 690 position. As discussed herein, the placement of flipper 690 also can provide a user a mechanical advantage when operating the blade 650 of the folding knife (e.g., the more rearward position of the flipper 690 when the blade 650 is deployed provides greater torque than a more forwardly-positioned flipper 690). The pocket clip 270 is reversible to be on either side of the folding knife. Advantageously, the folding knife has an ambidextrous flipper 690 and locking mechanism as shown by button 106, as well as a reversible pocket clip 270.

[0118] FIG. 24C is an illustrative perspective view of a folding knife with locking mechanism in a deployed position 2400C in accordance with some embodiments of the present disclosure. FIG. 24C shows the folding knife as assembled with the blade 650, the flipper 690, the second pivot fastener 626, the button 106, the first scale 140a and the second scale 140b, and the screw 260.

[0119] It should be understood that logical operations may be performed in any order, unless explicitly claimed otherwise or a specific order is inherently necessitated by the claim language. Additionally, some of the operations described may be skipped or not included in the method. For example, in methodologies directly or indirectly set forth herein, various steps and operations may be described in one possible order of operation but those skilled in the art will recognize the steps and operation may be rearranged, replaced, or eliminated without necessarily departing from the spirit and scope of the present disclosure. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting.Attorney Docket No. 1338.238.01 WOChanges in detail or structure may be made without departing from the spirit of the present disclosure as defined in the appended claims.

[0120] Other examples and implementations are within the scope and spirit of the disclosure and appended claims. Thus, the foregoing descriptions of the specific examples described herein are presented for purposes of illustration and description. They are not targeted to be exhaustive or to limit the examples to the precise forms disclosed. It will be apparent to one of ordinary skill in the art that many modifications and variations are possible in view of the above teachings.

Claims

Attorney Docket No. 1338.238.01 WOCLAIMS1. A locking knife, comprising: a first scale; a second scale opposed to the first scale, wherein the first and second scales are spaced apart to allow a blade therebetween when the blade is in a folded position; the blade comprising a cutting edge and a tang, wherein the tang connects the blade at a pivot point between the first and second scales, and wherein the blade comprises a first protruding lug adjacent to the pivot point and within the first scale; and a locking mechanism in contact with the first and second scales; a first button on a first side of the locking mechanism that extends through the first scale; wherein the locking mechanism slides in relation to the first and second scales to engage and disengage the locking mechanism with the first protruding lug to move the blade into the folded position and a deployed position, respectively.

2. The locking knife of claim 1, wherein a first end of the locking mechanism engages with the first protruding lug, and further comprising a first spring connected to the first side of the locking mechanism at a second end of the locking mechanism, and wherein the first springs biases the locking mechanism towards the pivot point.

3. The locking knife of claim 2, wherein the first spring is an omega spring.

4. The locking knife of claim 3, wherein the first spring is coupled to the first scale at an end of the first spring opposing the second end of the locking mechanism.

5. The locking knife of claim 1, further comprising a first liner wherein the first protruding lug passes through or passes partially into the first liner.

6. The locking knife of claim 5, wherein the locking mechanism is held in place at least by the first liner.Attorney Docket No. 1338.238.01 WO7. The locking knife of claim 5, wherein the first side of the locking mechanism is between the first scale and the first liner.

8. The locking knife of claim 5, wherein when the locking mechanism moves in relation to the pivot point, the first scale and the first liner stays stationary in relation to the pivot point.

9. The locking knife of claim 1, wherein the locking mechanism further comprises posts with at least one coil spring preassembled onto the posts, and wherein the at least one coil springs biases the locking mechanism towards the pivot point.

10. The locking knife of claim 1, wherein the locking mechanism is a unified component.

11. The locking knife of claim 1, wherein the locking mechanism further comprises a second button that extends through the second scale; wherein the locking knife further comprises a second protruding lug adjacent to the pivot point and within the second scale; and wherein the locking mechanism slides in relation to the first and second scales to engage and disengage the locking mechanism with the first and second protruding lugs, respectively.

12. A locking knife, comprising: a handle; a first liner inside the handle; a second liner inside the handle and opposed to the first liner, wherein the first and second liners are spaced apart by at least a thickness of a blade when the blade is in a folded position; the blade comprising a cutting edge and a tang, wherein the tang connects the blade at a pivot point between the first and second liners, and wherein the blade comprises a first protruding lug adjacent to the pivot point and within the first liner; and a locking mechanism comprising:Attorney Docket No. 1338.238.01 WO a first member and a second member, wherein the first member fits together with the second member at a top side of the locking mechanism, wherein the first member is in contact with the first liner and the second member is in contact with the second liner; and a first button on the first member that extends through the first liner; wherein the locking mechanism slides in relation to the first and second liners to engage and disengage the first member with the first protruding lug to move the blade into the folded position and a deployed position.

13. The locking knife of claim 12, wherein a first end of the locking mechanism engages with the first protruding lug, and further comprising a first spring connected to the first member at a second end of the locking mechanism, and wherein the first spring biases the locking mechanism towards the pivot point.

14. The locking knife of claim 12, wherein the locking mechanism is held in place by at least the first and second liners.

15. The locking knife of claim 12, wherein the first member is between the handle and the first liner, and the second member is between the handle and the second liner.

16. The locking knife of claim 12, wherein when the locking mechanism moves in relation to the pivot point, the handle and the first and second liners stay stationary in relation to the pivot point.

17. The locking knife of claim 12, wherein the locking mechanism further comprises posts with a first coil spring preassembled onto the posts, and wherein the first coil springs biases the locking mechanism towards the pivot point.

18. The locking knife of claim 12, wherein the locking mechanism further comprises a second button on the second member that extends through the second liner; wherein theAttorney Docket No. 1338.238.01 WO blade comprises a second protruding lug adjacent to the pivot point and within the second liner; wherein the locking mechanism slides in relation to the first and second liners to engage and disengage each of the first and second members with the first and second protruding lugs, respectively.

19. The locking knife of claim 17, wherein the locking mechanism further comprises a second coil spring preassembled onto the posts, and wherein the second coil spring biases the locking mechanism towards the pivot point.

20. A locking knife, comprising: a handle; a first liner inside the handle; a second liner inside the handle and opposed to the first liner, wherein the first and second liners are spaced apart to allow a blade therebetween when the blade is in a folded position; the blade comprising a cutting edge and a tang, wherein the tang connects the blade at a pivot point between the first and second liners, and wherein the blade comprises a first protruding lug adjacent to the pivot point and within the first liner; and a locking mechanism having first and second sides, wherein the first side is in contact with the first liner and the second side is in contact with the second liner; a first button on the first side that extends through the first liner; wherein the locking mechanism slides in relation to the first and second liners to engage and disengage the first side with the first protruding lug to alternatively stop and allow rotation of the blade into the folded position and a deployed position.

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