Multi-tool device

Abstract

To disclose a multi-tool device including a separable hinge architecture and an open-ended wrench mechanism.SOLUTION: An open-ended wrench mechanism includes: a frame member with an integrated or separate outer jaw and a sliding and rotating inner jaw; and a spring to bias the jaws to be closed. Various means to arrest the motion on the stroke are presented. The hinge embodies two parallel rotational joints through a positive or negative orifice allowing mechanical fastening of two multi-tool modules to be paired and locked rotationally through common means in selectable positions.SELECTED DRAWING: Figure 5

Description

Technical Field

[0005] , , , , ,

[0004] ,

[0003] , ,

[0006] , , ,

[0001] (Cross - Reference to Related Applications) This application claims priority to U.S. Provisional Application No. 62 / 548,901, filed on August 22, 2017, the entire content of which is incorporated herein by reference.

[0002] The present invention generally relates to multi - tool devices. More specifically, the present invention relates to multi - tool devices that include modular tool sets that are easy to use and can be easily carried by their users.

Background Art

[0003] Carrying an entire set of tools to a repair site is not convenient, and in the case of an emergency repair, it is required that the tools be immediately at hand with maximum efficiency. Also, it is inconvenient to change tools for different uses.

[0004] Conventional multi - tools have been developed to address this problem by producing portable tools with multiple available functions. However, these conventional multi - tools do not adequately address the need to apply rotational force, and thus may be difficult to handle, ineffective, or difficult to use. Also, conventional multi - tools have integral non - modular tools, and thus, the replenishment of tools in conventional multi - tools is limited. To be able to use other tools, an entirely different tool has to be purchased.

[0005] Furthermore, there have been various attempts to produce portable universal wrenches, but not all of them meet the standards in all fields. For example, these conventional portable wrenches may be difficult to adjust, have limited size spans, have limited torque lengths, may require manual alignment, and may be bulky.

[0006] Therefore, there is a need for multi-tool devices that include more powerful, modular hand tool sets that are easier to use and more easily portable. [Overview of the project] [Problems that the invention aims to solve]

[0007] Therefore, the present invention relates to a multi-tool device that substantially eliminates one or more problems arising from limitations and defects in related technologies. [Means for solving the problem]

[0008] According to one or more embodiments of the present invention, a multi-tool device is provided that includes a handle portion and an open-end wrench mechanism. The open-end wrench mechanism is a wrench frame member defining an outer claw portion of the open-end wrench mechanism, the wrench frame member further defining a slot inside thereof, and an inner claw member displaceably connected to the wrench frame member by a sliding pivot, the inner claw member comprising a portion of which is received in the slot of the wrench frame member, and a spring member configured to bias the inner claw member toward a closed position toward the outer claw portion of the wrench frame member. In one or more embodiments of these, the outer claw portion of the wrench frame member is configured to cooperate with the inner claw member to cause torque to be applied to the fastener in the open-end wrench mechanism when force is applied to the handle portion of the multi-tool device by the user.

[0009] In a further embodiment of the present invention, the wrench frame member comprises a first bearing surface, and the inner claw member comprises a second bearing surface, wherein the first bearing surface of the wrench frame member is positioned opposite to the second bearing surface of the inner claw member, and the first bearing surface of the wrench frame member has a first contour set configured to cooperate with a second contour set on the second bearing surface of the inner claw member. When the open-end wrench mechanism is in the engaged tightening position, the first and second contour sets of the individual first and second bearing surfaces are configured to provide tightening contact between the fastener contact surface of the open-end wrench mechanism and the fastener at a predetermined angle with respect to the line of action of the sliding pivot as the open-end wrench mechanism is rotated in the tightening direction. When the first and second bearing surfaces of the open-end wrench mechanism are in the disengaged position, the contact surface of the fastener is configured to act as a follower surface of the open-end wrench mechanism centered on the fastener as the open-end wrench mechanism is rotated relative to the fastener in the untightening direction.

[0010] In a further embodiment, the first bearing surface of the wrench frame member is provided with a first rack gear portion that forms a first contour set, and the second bearing surface of the inner claw member is provided with a second rack gear portion that forms a second contour set, and the first rack gear portion is arranged in a relationship that faces the second rack gear portion.

[0011] In yet another embodiment, the wrench frame member or the inner claw member includes a rotation limiting member configured to restrict the rotation of the inner claw member to a predetermined angle around a sliding pivot, in order to limit the rotation of the inner claw member relative to the wrench frame member.

[0012] According to one or more other embodiments of the present invention, the provided multi-tool device comprises: a first tool sub-assembly having an inner surface and an outer surface, wherein the inner surface of the first tool sub-assembly is located opposite to the outer surface of the first tool sub-assembly; a second tool sub-assembly having an inner surface and an outer surface, wherein the inner surface of the second tool sub-assembly is located opposite to the outer surface of the second tool sub-assembly; and a hinge member rotatably connecting the first tool sub-assembly to the second tool sub-assembly. The hinge member comprises a first axis of rotation around which a first tool subassembly can pivot, and a second axis of rotation around which a second tool subassembly can pivot, wherein the first axis of rotation is generally parallel to the second axis of rotation, and the first axis of rotation is separated from the second axis of rotation by a predetermined distance such that the first tool subassembly can be folded into a certain shape so that the first tool subassembly is positioned substantially parallel to the second tool subassembly, and the inner surface of the first tool subassembly faces the inner surface of the second tool subassembly.

[0013] In a further embodiment of the present invention, the first tool subassembly comprises one or more tool members, and the second tool subassembly comprises one or more additional tool members.

[0014] In yet another embodiment, one or more tool members of a first tool subassembly include a pair of folding pliers, each having a first handle end and a second head end having a pliers head positioned opposite the first handle end, the first handle end of the folding pliers includes a pair of spaced-out openings, the first of the pair of spaced-out openings positioned on the first handle portion of the folding pliers, and the second of the pair of spaced-out openings positioned on the second handle portion of the folding pliers, the spaced-out openings being configured to be collinear with each other in the closed position of the first and second handle portions of the folding pliers, and the hinge member of the multi-tool device further includes a pair of collinear posts positioned along a first pivot axis of the hinge member, the collinear posts being configured to be received into the individual openings of the spaced-out openings when the first tool subassembly is engaged with the second tool subassembly.

[0015] In yet another embodiment, the first tool subassembly is configured to be removed from the second tool subassembly by disengaging the collinear post pairs of the hinge member from each of the separated openings on the first and second handle portions of the folding pliers, and the first tool subassembly is configured to be attached to the second tool subassembly by engaging the separated openings on the first and second handle portions of the folding pliers with the individual posts of the collinear posts of the hinge member, and by locking the first and second handle portions of the folding pliers in a predetermined position relative to each other using the plier head at the second head end of the folding pliers.

[0016] In yet another embodiment, one of the first tool subassembly, the second tool subassembly, and the hinge member further comprises a rotation limiting member that restrains the rotation of the first tool subassembly relative to the second tool subassembly.

[0017] In yet another embodiment, the hinge member further comprises a first surface and a second surface located opposite the first surface, wherein at least one of the first and second surfaces is provided with a recess for receiving a fastener drive member.

[0018] In yet another embodiment, the recess for receiving the fastener drive member is substantially centered on the hinge member such that, when the inner surface of the first tool subassembly folds into the inner surface of the second tool subassembly, the longitudinal axis of the recess substantially coincides with the central axis of the multi-tool device.

[0019] In yet another embodiment, the first and second faces of the hinge member each include recesses formed internally for receiving individual fastener drive members.

[0020] According to one or more further embodiments of the present invention, a multi-tool device is provided which includes a pair of folding pliers. The pair of folding pliers includes a plier handle body portion which includes a first handle member and a second handle member, and a plier head portion which is connected to the plier handle portion, the plier head portion which includes a first jaw member which is pivotably connected to a second jaw member about a first axis of rotation, the plier head portion which is configured to fold into a folding plier storage shape with respect to the plier handle body portion, and each of the first and second jaw members has a first end for engaging with an object being operated by the pliers and a second end located on the opposite side which is pivotably connected to the respective first and second handle members, the second ends of the first and second jaw members which are configured to pivot relative to the respective first and second handle members about the respective second and third axes of rotation.

[0021] In a further embodiment of the present invention, one of the first and second handle members is foldable relative to the other of the first and second handle members about a first axis of rotation, defining an operable, unfolded folding pliers and a non-operable, folded folding pliers. When the folding pliers are folded, the second and third axes of rotation, which are configured such that the second ends of the first and second jaw members pivot about them relative to the individual first and second handle members, are collinear with each other.

[0022] In yet another embodiment, the first and second handle members are rotatably connected to the outer surfaces of the first and second claw members at the second ends of the first and second claw members. When the folding pliers are folded, the first and second handle members are generally positioned parallel to each other.

[0023] In yet another embodiment, when the pliers head portion is folded into the pliers handle body portion, the first and second handle members are locked in the folded position.

[0024] In yet another embodiment, one of the first handle member and the second handle member is provided with a notch formed therein for receiving the tip of the pliers head portion to secure the first and second claw members in a closed position.

[0025] According to yet another one or more embodiments of the present invention, there is provided a multi-tool device including a tool body portion including one or more tool members and a driver bit extension holding portion. The driver bit extension holding portion includes a driver bit extension cradle formed by the tool body portion, the driver bit extension cradle being configured to receive a portion of the driver bit extension, and a holding member configured to hold the driver bit extension within the driver bit extension cradle, the holding member being configured to extend along a portion of the length of the driver bit extension and circumscribe a circumferential portion of the driver bit extension.

[0026] In a further embodiment of the present invention, the holding member of the driver bit extension holding portion is in the form of a cantilever spring member configured to guide the driver bit extension into the driver bit extension cradle and apply a holding force to the driver bit extension.

[0027] In yet another embodiment, the cantilever spring member includes a downwardly curved portion configured to circumscribe a circumferential portion of the driver bit extension, the downwardly curved portion of the cantilever spring member being configured to apply a holding force to the driver bit extension.

[0028] It should be understood that the foregoing general description and the following detailed description of the present invention are, by their nature, merely exemplary and explanatory and are not to be construed in any way as limiting the scope of the appended claims.

Brief Description of the Drawings

[0029] Further features of embodiments of the present invention will become apparent to those skilled in the art to which the embodiments pertain by reading the present specification and the claims in conjunction with the accompanying drawings. [Figure 1]A perspective view showing a multi-tool device according to one embodiment of the present invention, wherein the two halves of the multi-tool device are in an unfolded state, and the side cover of the wrench portion of the multi-tool device has been removed to show the internal components of the wrench portion. [Figure 2] Figure 1 is a bottom view of the multi-tool device. [Figure 3] Figure 1 is a side view of the multi-tool device, where the side cover of the wrench portion of the multi-tool device has been removed to show the internal components of the wrench portion. [Figure 4] Figure 1 is an enlarged side view of the wrench portion of the multi-tool device, with the side cover of the wrench portion of the multi-tool device removed to show the internal components of the wrench portion. [Figure 5] Another perspective view of the multi-tool device shown in Figure 1, where the first half of the multi-tool device is shown separated from the second half of the multi-tool device so that the pliers of the first half of the multi-tool device can be used. [Figure 6] Figure 5 is a first side view of the multi-tool device, where the two halves of the multi-tool device are shown separated from each other. [Figure 7] Figure 5 shows a second side view of the multi-tool device, where the two halves of the multi-tool device are shown separated from each other. [Figure 8] Figure 1 is an end view of the multi-tool device, showing the second half of the multi-tool device, which includes a wrench. [Figure 9] Figure 1 is yet another perspective view of the multi-tool device, showing the first and second halves of the multi-tool device in a partially unfolded state. [Figure 10] This is yet another perspective view of a multi-tool device according to one embodiment of the present invention, in which case the two halves of the multi-tool device are again shown in an unfolded state. [Figure 11]Figure 1 is another end view of the multi-tool device, showing the second half of the multi-tool device, including the wrench. [Figure 12] Figure 1 is another bottom view of the multi-tool device. [Figure 13] Figure 1 is another side view of the multi-tool device, where the side cover is located on the wrench portion of the multi-tool device. [Figure 14] Figure 1 is a first side view of the multi-tool device in its folded state, showing the side of the multi-tool device including the folding knife blade. [Figure 15] This is a second side view of the wrench portion of the multi-tool device in Figure 1 in its folded state, showing the side view of the multi-tool device including the wrench. [Figure 16] This is a bottom view of the multi-tool device shown in Figure 1 in its folded state. [Figure 17] This is a plan view of the multi-tool device in its folded state (Figure 1). [Figure 18] Figure 1 is a first end view of the multi-tool device in its folded state, showing the wrench head end. [Figure 19] This is a second end view of the multi-tool device shown in Figure 1 in its folded state, and the hinge member of the multi-tool device is shown. [Figure 20] Figure 1 is a perspective view of the multi-tool device in its folded state, with the blade of the folding knife extended. [Figure 21] Figure 1 is a perspective view of the multi-tool device in its folded state, showing the driver bit extension, to which the driver bits are connected, inserted into the recess in the hinge member of the multi-tool. [Figure 22]Figure 1 is a perspective view of the multi-tool device in its deployed state, showing the driver bit extension, with the driver bit connected, inserted into a recess in the hinge member of the multi-tool. The extended positions of both halves of the multi-tool device function as a double handle, allowing the user to apply considerable torque to the fasteners driven by the driver bit. [Figure 23] Figure 1 is a perspective view of the wrench portion of the multi-tool device, showing the driver bit extension, to which the driver bit is attached, inserted into a recess in the hinge member of the multi-tool, illustrating the wrench portion of the multi-tool device which functions as a single handle for applying torque to fasteners driven by the driver bit. [Figure 24] Figure 1 is another perspective view of the wrench portion of the multi-tool device, showing the driver bit recess in the hinge member of the multi-tool device. [Figure 25] Figure 1 is an exploded perspective view of a multi-tool device, showing the components that make up the multi-tool device separated from each other. [Figure 26] This is a side view showing a second half alternative embodiment of the multi-tool device with a double spring wrench, showing the second external claw portion in a biased and closed position. [Figure 27] Figure 26 is a side view showing the second outer claw portion that has rotated and opened. [Figure 28] This is a side view showing a second half alternative embodiment of the multi-tool device together with a cam lock internal claw swivel wrench. [Figure 29] This is a side view showing a second half alternative embodiment of the multi-tool device together with a linear shaft wrench. [Figure 30] This is a side view showing a second half alternative embodiment of the multi-tool device together with a cam wrench. [Figure 31] This is a side view showing a second half alternative embodiment of the multi-tool device with a variable range wrench, showing the second outer claw portion in the closed position. [Figure 32]Figure 31 is a side view showing the second outer claw portion that has rotated and opened. [Figure 33] This perspective view shows an alternative embodiment of a pivot assembly for a multi-tool device, along with an exploded view of a keyed constant-tension pivot. [Figure 34A] This is a bottom view showing the assembled multi-tool device, Figure 33. [Figure 34B] Figure 34A is an enlarged cross-sectional view of the multi-tool device via a keyed constant-tension pivot. [Figure 34C] Figure 34B is a partial cross-sectional view of the multi-tool device via a keyed constant-tension pivot.

[0030] Throughout the diagrams, the same parts are always represented using the same reference letters, and therefore, as a general rule, their explanation is given only once. [Modes for carrying out the invention]

[0031] In the following discussion, similar reference numbers are used in the diagrams to refer to similar structures and elements.

[0032] Exemplary embodiments of the multi-tool device are shown in Figures 1–3, 5–22, and 25, all represented by 100. In the illustrated embodiments, the multi-tool device 100 is a separable, modular multi-tool with a self-adjusting, open-end ratchet wrench mechanism. As will be detailed later, the multi-tool device 100 effectively includes, in one compact arrangement, an open-end wrench mechanism, a hinge member that receives a fastener drive member for applying torque to fasteners, a pair of folding pliers, a folding knife, a folding metal saw blade, and a folding woodworking saw blade.

[0033] First, with reference to Figures 1 to 4, the open-end wrench mechanism of an exemplary embodiment of the multi-tool device 100 will be described. As shown in Figures 1 and 4, the open-end wrench mechanism (i.e., the wrench portion 72 - see Figure 4) generally includes: (i) a wrench frame member 12 defining the outer claw portion of the open-end wrench mechanism, the wrench frame member 12 further defining a longitudinally extending slot 74 inside it (see Figure 4); (ii) an inner claw member 18 displaceably connected to the wrench frame member 12 by a sliding pivot 76, a portion of which is received within the slot 74 of the wrench frame member 12; and (iii) a spring member 68 configured to bias the inner claw member 18 toward a closed position with respect to the outer claw portion of the wrench frame member 12. The outer claw portion of the wrench frame member 12 is configured to cooperate with the inner claw member 18 to apply torque to the fastener (for example, a bolt head or nut) in the open-end wrench mechanism when the user applies force to the handle portion 20 of the multi-tool device 100 (see Figure 3).

[0034] Referring again to Figure 4, it can be seen that the wrench frame member 12 has a first bearing surface 78, and the inner claw member 18 has a second bearing surface 80. The first bearing surface 78 of the wrench frame member 12 is positioned opposite the second bearing surface 80 of the inner claw member 18. The first bearing surface 78 of the wrench frame member 12 has a first set of contours configured to cooperate with a second set of contours on the second bearing surface 80 of the inner claw member 18. When the open-end wrench mechanism of the multi-tool device 100 is in the engaged tightening position, the first and second sets of contours of the individual first and second bearing surfaces 78, 80 are configured to provide tightening contact between the fastener contact surface of the open-end wrench mechanism and the fastener (e.g., bolt head or nut) at a predetermined angle (e.g., 20 degrees) with respect to the line of action of the sliding pivot 76 when the open-end wrench mechanism is rotated in the tightening direction. Conversely, when the first and second bearing surfaces 78, 80 of the open-end wrench mechanism are in the disengaged position, the contact surface of the fastener is configured to act as a follower surface of the open-end wrench mechanism around the fastener (e.g., bolt head or nut) as the open-end wrench mechanism is rotated in the non-tightening direction relative to the fastener. As shown in the illustrated embodiment, the first bearing surface 78 of the wrench frame member 12 includes a first rack gear portion that forms a first contour set, and the second bearing surface 80 of the inner claw member 18 includes a second rack gear portion that forms a second contour set. The first rack gear portion is positioned opposite the second rack gear portion.

[0035] In the illustrated embodiment, the inner claw member 18 includes a rotation limiting member 82 (i.e., in the form of a semicircular projection) configured to restrict the rotation of the inner claw member 18 to a predetermined angle (e.g., 2 degrees) about the sliding pivot 76, in order to limit the rotation of the inner claw member 18 relative to the wrench frame member 12. Thus, the inner claw member 18 can rotate about the sliding pivot 76 between two end angles (e.g., between 0 degrees and 2 degrees). In one or more alternative embodiments, the rotation limiting member may be provided on the wrench frame member 12 rather than on the inner claw member 18.

[0036] Referring together to Figures 5, 15, 24, and 25, it can be seen that in an exemplary embodiment, the open-end wrench mechanism of the multi-tool device 100 further comprises two cover members 14, 16 that conceal the inner portions of the wrench frame member 12 and the inner claw member 18. The first cover member 14 of the open-end wrench mechanism includes upper and lower flange portions and a finger choil (see Figure 25). As shown in Figure 5, the first cover member 14 is secured to the first side of the wrench frame member 12 by a plurality of fastener members (e.g., six screw members 48). The second cover member 16 of the open-end wrench mechanism is in the form of a flat plate (see Figure 25). As shown in Figure 15, the second cover member 16 is secured to the second side of the wrench frame member 12 by a plurality of fastener members (e.g., six screw members 48).

[0037] While the open-end wrench mechanism is operating, the reaction force component on the claw surfaces generated by the rotation of both claws around the central axis of the fastener (e.g., bolt head or nut) causes the first and second gear rack portions to rotate and come into contact, engaging the gear teeth and thus preventing the movement of the inner claw member 18 along the line of action of the spring 68. The ratio of the reaction force component to the overall force is set by the predetermined angle mentioned earlier. When the first and second gear rack portions rotate and come into contact with each other, the claws are locked in place, allowing torque to be applied to the fastener via the claw surfaces. Conversely, when the assembly rotates in the opposite direction around the fastener, the frictional and reaction forces from the contact with the fastener disengage the rack teeth, and the claws rotate to the other limit position set by the rotation limiting member 82. In this position, the inner claw member 18 can slide freely along the line of action of the sliding pivot 76 against the spring 68. Next, the claw surface can use the surface of the fastener as a cam to move around the fastener to a new relative position to the fastener. By rotating the claw assembly on the rotation axis of the fastener in alternating strokes, the fastener is rotated in one direction with each closed stroke, and the open-end wrench mechanism changes its relative position to the fastener with each open stroke, resulting in a ratchet-type unidirectional rotational displacement of the fastener.

[0038] It is readily apparent that the open-end wrench mechanism of the Multi-Tool Device 100, as described above, offers numerous features and advantages. Firstly, the innovative design of the open-end wrench mechanism allows it to be used with a wide range of fastener sizes, making it scalable in this respect. Secondly, the open-end wrench mechanism cams in one direction around the surface and locks in the other direction for ratchet action in a predetermined position. Thirdly, manual adjustment is unnecessary with the open-end wrench mechanism. The jaws of the open-end wrench mechanism are self-adjusting and only need to be opened manually to create a fitting clearance around the fastener. When loosened, the jaws automatically spring up to the surface of the fastener, allowing the ratchet action to begin. Fourthly, the open jaws of the open-end wrench mechanism allow it to be used with objects such as pipe fittings that closed jaws cannot pass through. Fifthly, since the jaws are located facing forward on the tool and the center of the mechanism is positioned along the torque length of the tool, the clearance required for the wrench head in confined spaces can be minimized. Sixth, the geometry of the wrench is such that it can apply high torque without breaking, provided the wrench is made from a material with sufficient strength (e.g., steel). Seventh, the jaws, by their nature as a tool, engage with the fastener in two places. Effectively, this occurs on the surface of the fastener rather than the corners, thus preventing rotation. Eighth, the greater the torque applied to the wrench, the greater the tightening force on the fastener, thus preventing slippage.

[0039] Next, the structure and function of the hinge member 10 of the multi-tool device 100 according to an exemplary embodiment will be described with reference to Figures 5 to 19 and Figures 21 to 23. First, referring to Figures 9, 10, 16, and 17, the multi-tool device 100 generally comprises: (i) a first tool subassembly having an inner and outer surface (i.e., a first tool half having folding pliers and a folding knife), wherein the inner surface of the first tool subassembly is located opposite to the outer surface of the first tool subassembly; (ii) a second tool subassembly having an inner surface and an outer surface having a finger choil (e.g., a second tool half having an open-end wrench mechanism), wherein the inner surface of the second tool subassembly is located opposite to the outer surface of the second tool subassembly; and (iii) a hinge member 10 rotatably connecting the first tool subassembly to the second tool subassembly (see Figure 9). It can be seen that the hinge member 10 comprises a first pivot axis RA1 on which a first tool subassembly can pivot, and a second pivot axis RA2 on which a second tool subassembly can pivot, wherein the first pivot axis RA1 is generally parallel to the second pivot axis RA2, and the first pivot axis RA1 is separated from the second pivot axis RA2 by a predetermined distance (e.g., 8.73 mm) such that the first tool subassembly can be folded into a certain shape so that the first tool subassembly remains attached to the second tool subassembly and is positioned substantially parallel to the second tool subassembly, and the inner surface of the first tool subassembly faces the inner surface of the second tool subassembly (see, for example, the folded multi-tool device 100 in Figures 14 to 19). As will be described in more detail later, the hinge member 10 effectively enables detachable hinge action between the first and second tool subassemblies (see, for example, Figures 5 to 7).

[0040] As shown in Figures 5 and 9, the first tool subassembly comprises several tool components, such as folding pliers, a folding knife blade 34, a folding metal saw blade 38, and a folding woodworking saw blade 40. Similarly, the second tool subassembly also comprises several tool components, such as the open-end wrench mechanism and the driver bit extension 58 (e.g., a 1 / 4-inch hexagonal drive bit extension) described above. In alternative embodiments, the first tool subassembly may include scissors, hand shears, fencing pliers, and others instead of incorporating multi-purpose folding pliers. As best shown in Figures 14 and 21, the first tool subassembly comprises a molded cover 28 for covering the sharp edge of the folding knife blade 34 when the folding knife blade 34 is in its retracted state (see Figure 21) to prevent the user of the multi-tool device 100 from being accidentally cut by the knife blade 34. When the knife is ready to be used, the user rotates the knife blade 34 about 180 degrees around the knife blade pivot bolt 50 until the knife blade 34 is in its unfolded state (see Figure 20). As shown in the exploded view of Figure 25, the knife blade pivot subassembly further comprises an associated knife blade washer member 36 positioned around the knife blade pivot bolt 50, a complementary screw fastener 56 on the opposite side of the first tool subassembly that screw-engages with the knife blade pivot bolt 50, and a barrel member 54 that forms a screw barrel for mounting the folding knife blade 34 (see Figure 25).

[0041] Referring to Figures 1, 3, and 6, it can be seen that in an exemplary embodiment, the wrench portion frame 12 of the second tool subassembly is joined to the hinge member 10 by a pair of opposing fastener members 52.

[0042] Next, with reference to Figures 5 to 7, the folding pliers on the first tool subassembly will be described. First, as shown in Figure 5, the folding pliers have a first handle end and a second head end on which the pliers head is located opposite the first handle end. The first handle end of the folding pliers has a pair of spaced-apart openings or recesses 84, 86 (see Figure 5). The first opening or recess 84 of the pair of spaced-apart openings or recesses 84, 86 is located on the first handle portion 20 of the folding pliers, and the second opening or recess 86 of the pair of spaced-apart openings or recesses 84, 86 is located on the second handle portion 22 of the folding pliers. The pair of spaced-apart openings or recesses 84, 86 are configured to be collinear with each other in the closed position of the first and second handle portions 20, 22 of the folding pliers (for example, as shown in Figure 1). Referring again to Figure 5, it can be seen that the hinge member 10 of the multi-tool device 100 further comprises a pair of collinear posts 15, 17 positioned along the first axis of rotation RA1 of the hinge member 10, configured to receive into each of the separated openings 84, 86 (as shown in Figure 1, for example) when the first tool subassembly engages with the second tool subassembly.

[0043] As shown in Figures 5 to 7, the first tool subassembly is configured to be separated from the second tool subassembly by disengaging the collinear post pairs 15, 17 of the hinge member 10 from the separated openings or recesses 84, 86 on the first and second handle portions 20, 22 of the folding pliers, respectively. Conversely, the first tool subassembly is configured to be attached to the second tool subassembly by engaging the separated openings or recesses 84, 86 on the first and second handle portions 20, 22 of the folding pliers with the individual posts of the collinear posts 15, 17 of the hinge member 10, and by locking the first and second handle portions 20, 22 of the folding pliers in a predetermined position relative to each other using the pliers head at the second head end of the folding pliers. When the plier head rotates and the first and second handle portions 20, 22 of the folding pliers are locked in place relative to each other, the first tool subassembly is constrained from rotating about the first rotation axis RA1 of the hinge member 10. The first and second tool subassemblies may then rotate independently about their respective constraint axes (i.e., RA1 and RA2) to collinear positions (e.g., see Figures 1 and 13), offset parallel positions at either extreme (e.g., see Figures 14-17), or any intermediate position. The interface between the first and second tool subassemblies and the hinge may also have a rotation locking mechanism or rotation stopper to restrict rotation about their axes to any desired shape. For example, in this exemplary embodiment, the first tool subassembly (e.g., half being pliers) is restrained by a stopper device in a range of 90 to 180 degrees relative to the hinge 10, and the second tool subassembly (e.g., half being a wrench) is lockable at 90 and 180 degrees.

[0044] In the illustrated embodiment, at least one of the first tool subassembly, the second tool subassembly, and the hinge member 10 further comprises rotation limiting members 42, 46 that restrain the rotation of the first tool subassembly relative to the second tool subassembly. For example, in the exemplary embodiment, Figure 1 shows a thumb stud of a flat pivot hinge lock 42 protruding from the frame 12 of the wrench portion. The flat pivot hinge lock 42 fits into a channel in the hinge member 10 and is rotatably fixed to the wrench tool half to restrict rotation between the hinge 10 and the wrench tool half. Internally, as can be seen in Figures 3 and 9, the flat pivot hinge lock 42 is supported by a cantilever spring 46 that biases the flat pivot hinge lock 42 to engage with a hinge channel parallel to the axis of rotation between the wrench tool half and the hinge 10 (i.e., the spring 46 biases the flat pivot hinge lock 42 to a seated position within the hinge channel). The other tool half depends on the geometry of the forming knife cover 28 and the hinge member. The end of the forming knife cover 28 adjacent to the hinge 10 contacts a protruding surface of the hinge member 10 in the deployed position (see Figure 22) to prevent excessive rotation. The geometry of the multi-tool device 100 is such that the tool half, including the pliers, is constrained from rotating about one axis of the hinge member 10 at its end when it is in its folded shape, and is released from that constraint when it is deployed.

[0045] In this exemplary embodiment, referring to Figures 1, 5, and 25, it can be seen that the second handle portion 22 of the folding pliers houses a folding metal saw blade 38 and a folding woodworking saw blade 40. In addition, as shown in Figure 25, the second handle portion 22 may further house a combination of a dart and a file 30. Also, as shown in Figure 25, the second handle portion 22 may further include a pivot insert member 24 located at the end of the second handle portion 22 closest to the hinge member 10 for receiving the end portion of the collinear post 17 of the hinge member 10. The combination of the dart and a file 30, the folding metal saw blade 38, and the folding woodworking saw blade 40 rotate around a fastener member 62. A washer member 32 functions as a bearing pivot for the folding saw blades 38 and 40.

[0046] Referring again to Figures 5-7 and 9, it can be seen that the hinge member 10 further comprises a first surface and a second surface located opposite the first surface. In this exemplary embodiment, the first outer surface of the hinge member 10 is provided with a hexagonal recess 11 (e.g., a 1 / 4-inch hexagonal recess) formed internally to receive a fastener drive member (e.g., the end portion of the driver bit extension 58). That is, the recess 11 within the hinge member 10 is configured to receive a fastener drive member for applying torque to the fastener. As shown in Figures 9, 19 and 21, in this exemplary embodiment, the hexagonal recess 11 is substantially centered in the hinge member 10 such that when the inner surface of the first tool subassembly folds into the inner surface of the second tool subassembly, the longitudinal axis LA1 of the hexagonal recess 11 (see Figure 21) substantially coincides with the central axis of the multi-tool device 100. In one alternative embodiment, the second surface of the hinge member 10 may be provided with a driver recess formed within the second surface rather than on the first surface. In another alternative embodiment, each of the first and second surfaces of the hinge member 10 may be provided with a driver recess formed internally to receive individual fastener drive members.

[0047] Instead of, or in addition to, the 1 / 4-inch hexagonal recess shown in this exemplary embodiment, the faces of the hinge member 10 may be provided with other drive-suitable geometric shapes, such as a 1 / 4-inch square boss, etc. The drive geometry may be positioned in the middle of the central axis of the folded tool for maximum ergonomics, or multiple geometric shapes may be present on a single face, slightly reducing ergonomics. Effectively, the ability of the hinge action to present both sides of the hinge to the external volume of the folded tool also allows two drive geometric shapes to be embodied, one on each side of the hinge 10 on the central axis of the tool.

[0048] It is readily apparent that the structure and function of the detachable hinge of the multi-tool device 100, as described above, offer many features and advantages. Firstly, the detachable hinge configuration of the multi-tool device 100 effectively allows for user customization of the multi-tool device 100 by pairing modular halves consisting of various tools. Secondly, when the first and second tool subassemblies are joined, one tool half can be used to extend the effective lever length of the tool paired with it. This is particularly beneficial when the paired tools are primarily used as torque devices such as wrenches or crowbars, or otherwise benefit from the added length during use. Thirdly, the tool can be configured to assist in specific tasks, such as oriented the two tool halves at 135 degrees relative to each other to form proximity of a saw handle, or the two halves may be locked at 90 degrees relative to each other to allow for a new, enhanced two-handed knife cutting grip, among other things. Fourth, this geometric shape places the rotational drive axis of the fastener at or near the central axis of the tool in the folded mode (for example, as shown in Figure 21), providing excellent ergonomics with respect to driving. Fifth, the tool places the drive axis of the fastener at or near the center of length when fully extended, allowing the tool to be used as a T-handle screwdriver (for example, as shown in Figure 22). Sixth, even when one half of the tool is removed (for example, as shown in Figure 23), the hinge 10 can still provide screwdriver functionality at any angle, allowing the connected remaining half of the tool and the hinge 10 to still function as a screwdriver or right-angle screwdriver. Seventh, with one half of the tool removed, it can operate in conjunction with the other half. In this case, the wrench or screwdriver can operate in conjunction with the pliers. For example, the wrench can turn a nut while the pliers hold the bolt head. Eighth, given the folding properties of the tool, a method for securing the tool in the closed position (e.g., a lock, a magnet, etc.) allows the tool to be carried by clipping it onto a pocket or belt.In one or more embodiments, the multi-tool device 100 may be provided with a magnet 60 (see Figure 25) for holding the device 100 in a closed position (i.e., folded), provided that the device 100 is manufactured from a magnetic metal material. Ninth, depending on the embodiment, the two tool halves can be detached from each other for cleaning. Tenth, the multi-tool device 100 described herein effectively enables the compact and convenient carrying of multiple tools.

[0049] Next, referring again to Figures 5 to 7, the folding pliers in the first tool subassembly of the multi-tool device 100 will be described further. As previously described, a pair of folding pliers includes a pliers handle body portion and a pliers head portion connected to the pliers handle portion (see Figure 5). The pliers handle body portion includes a first handle member 20 and a second handle member 22. The pliers head portion includes a first jaw member 26 that is pivotably connected to the second jaw member 27 about a jaw rotation axis RA3 (see Figure 5). In this exemplary embodiment, the pliers head portion is configured to fold into the pliers handle body portion in a folding pliers storage configuration. The first and second jaw members 26, 27 each have a first end for engaging with an object to be operated by the pliers and a second end located on the opposite side that is pivotably connected to the respective first and second handle members 20, 22. The second ends of the first and second claw members 26, 27 are configured to pivot around their respective pivot axes RA4, RA5 relative to the individual first and second handle members 20, 22. As shown in Figure 1, in this exemplary embodiment, the first claw member 26 is pivotably connected to the first handle member 20 by a fastener member 64 (e.g., an ultra-thin shoulder screw), while the second claw member 27 is pivotably connected to the second handle member 22 by a fastener member 62 (e.g., an ultra-thin shoulder screw). The first and second claw members 26, 27 are pivotably connected to each other by pliers pivot rivets 66 so that the claw members 26, 27 can rotate around the claw pivot axis RA3 (see Figure 5).

[0050] Referring together to Figures 5 and 13, it can be seen that in this exemplary embodiment, the second handle member 22 is foldable relative to the first handle member 20 about the jaw rotation axis RA3, defining an operational unfolded state (e.g., as shown in Figures 5 to 7) and an inoperable folded state (e.g., as shown in Figure 13). When the folding pliers are in the folded state (as shown in Figure 13), the rotation axes RA4 and RA5, which are configured to allow the second ends of the first and second jaw members 26 and 27 to pivot relative to the individual first and second handle members 20 and 22 about them, are collinear. As shown in Figures 5 to 7, the first and second handle members 20 and 22 are pivotably connected to the outer surfaces of the first and second jaw members 26 and 27 at their second ends. When the folding pliers are folded (i.e., as shown in Figure 13), the first and second handle members 20 and 22 are generally positioned parallel to each other. Furthermore, when the pliers head portion is folded into the pliers handle body portion as shown in Figure 13, the first and second handle members 20 and 22 are locked in the folded position.

[0051] In this exemplary embodiment, referring to Figure 5, it can be seen that the first handle member 20 is provided with a notch 88 formed inside it for receiving the tip of the pliers head portion to fix the first and second jaw members 26, 27 in the closed position. When the pliers jaws 26, 27 are closed and rotated to a position where they are between the inner surfaces of the handles 20, 22 and are coplanar with the top and bottom surfaces of the handles 20, 22, the tip of the pliers rotates into the corresponding notch 88 in the geometry of the handle 20, thereby constraining the opening of the pliers head. This then locks the thus constrained pliers handles 20, 22 in a predetermined position when positioned within the corresponding geometry on the twin-axis hinge. This allows the first tool subassembly (i.e., the first tool half) to be used as a single unit of the entire tool, including the extension lever, handle, etc. If there is a mating geometry that connects to the hinge when closed, and a method is employed to restrain both handles on the hinge, then other alternative embodiments of the tool half may be folded on axes of different orientations for other uses.

[0052] It is readily apparent that the innovative design of the folding locking pliers of the Multi-Tool Device 100, as described above, offers many features and advantages. Firstly, the folding locking pliers are compact, contributing to the overall small size of the Multi-Tool Device 100. Secondly, the design of the folding locking pliers effectively allows one handle surface to be adjacent to another surface of a different shape to restrain smaller components inside. Thirdly, the design of the folding locking pliers allows the plier head to be used at various angles relative to the handle. Fourthly, the design of the folding locking pliers allows one half of the tool to be used as a lever and the other as an extension of the entire tool. Fifthly, the design of the folding locking pliers simplifies use and manufacture by integrating the lock of one half of the tool into the entire tool.

[0053] Next, with reference to Figures 1, 15, 16, and 24, the driver bit extension holder portion of the multi-tool device 100 according to an exemplary embodiment will be described. The driver bit extension holder portion is provided on the tool body portion of the multi-tool device 100. Specifically, in this exemplary embodiment, the driver bit extension holder portion is provided on the second tool subassembly adjacent to the open-end wrench mechanism (see Figure 15). As shown in Figures 15 and 24, the driver bit extension retaining portion generally comprises (i) a driver bit extension cradle 90 formed by the tool body portion (i.e., having a cavity or recess formed therein of a second tool subassembly) and configured to receive a portion of the driver bit extension 58 (as shown in Figure 15), and a retaining member 44 configured to hold the driver bit extension 58 within the driver bit extension cradle 90 (see Figure 24), wherein the retaining member 44 extends along a portion of the length of the driver bit extension 58 and is circumscribing the circumferential portion of the driver bit extension 58 (see Figures 15 and 16). In this exemplary embodiment, the driver bit extension cradle 90 has a receptive geometry sufficient to hold the driver bit extension 58. For example, as shown in Figure 24, the flange portion 96 of the first cover member 14 and the flange portion 98 of the second cover member 16 form side bearing surfaces for the cradle effect by the driver bit extension 58. Also as shown in Figure 24, the cradle 90 has a floor positioned between the flange portions 96 and 98 of the first and second cover members 14 and 16.

[0054] In this exemplary embodiment, the retaining member 44 of the driver bit extension retaining portion is in the form of a cantilevered carabiner-type spring member configured to apply a retaining force to the driver bit extension 58 and guide the driver bit extension 58 into the driver bit extension cradle 90 (see Figures 15 and 24). As shown in Figure 15, the cantilevered spring member 44 comprises a longitudinally extending portion 92 and a downwardly curved semicircular portion 94 configured to surround the circumferential portion of the driver bit extension 58.

[0055] As shown in the exemplary embodiments in Figures 1 and 21, the first handle portion 20 of the folding pliers includes a bit storage cavity formed internally for receiving a plurality of bit members 70 (for example, for receiving four single-ended quarter bits). The bottom wall of the bit storage cavity is provided with a plurality of bit recesses 21 formed internally for receiving the bit members 70 in a friction-fit type engagement (see Figure 1).

[0056] The downward-curved semicircular portion 94 of the cantilever spring member 44 is configured to apply a holding force to the driver bit extension 58. In this exemplary embodiment, the downward-curved semicircular portion 94 of the spring 44 has an inner radius equal to or with some tolerance to the outer diameter of the driver bit extension 58, which is pressed against a plane perpendicular to the length of the spring 44 to grip the round portion or cross-section of the driver bit extension. The downward-curved semicircular portion 94 of the spring 44 applies a gripping force to the driver bit extension. The geometry of the cradle acts as a stopper to prevent the driver bit extension from sliding from below the spring 44 in the direction of its larger diameter portion, and the downward-curved semicircular portion 94 of the spring 44 also serves the same function to prevent sliding in the opposite direction. The larger diameter portion of the driver bit extension 58 may be gripped and pulled in the direction normal to the geometry of the cradle. This force causes the spring 44 to rotate upward around its opposite end, deforming and opening. The driver bit extension 58 can rotate sufficiently against the spring 44 to reach a certain position, and thus slide over the stopper in the cradle geometry. At this position, the driver bit extension 58 can be axially detached from the holder, and the spring 44 returns to its resting position, which is now empty. Installation of the driver bit extension 58 into the holder is performed in the reverse of this procedure.

[0057] It is readily apparent that the innovative design of the driver bit extension holder of the multi-tool device 100, as described above, offers numerous features and advantages. Firstly, the driver bit extension holder provides reliable retention of the driver bit extension 58. Secondly, the driver bit extension holder of the multi-tool device 100 allows for easy one-handed insertion and removal of the driver bit extension 58. Thirdly, the driver bit extension holder allows for easy replacement of the spring 44 if necessary. Fourthly, the cradle geometry of the driver bit extension holder can be directly integrated into the tool form, reducing the number of parts and simplifying manufacturing.

[0058] Figures 26 and 27 show an embodiment of a double spring wrench in which the inner claw 18 functions in exactly the same manner as in the main embodiment described herein. The outer claw member 12 comprises first and second outer claw portions 202, 204 (collectively referred to as appendages) that are hinged together via a pin 206 and biased to close by a spring embodied here by a flat cantilever spring 208. It should be understood that other types of springs are also feasible.

[0059] The first outer jaw portion 202 includes a stop device 210 that restricts movement in the closed position and establishes a perpendicular bearing surface together with the first bearing surface 78 of the wrench frame member 12 and the second bearing surface 80 of the inner jaw member 18. This is desirable for simplifying the application of the tool. In this stop position, the bearing surface is perpendicular to the hinge axis, and the appendage acts as two force members, namely rotational stability and slip resistance. The inner jaw 18 is locked as described and combined with the outer jaw member 12, both of which transmit torque applied to the handle. When the tool is reversed, the reaction force releases the lock of the inner jaw, preparing it to cam, and the second outer jaw portion 204 (also known as the outer finger) rotates freely and opens due to the reaction force from the fastening surface, also camming. Self-adjustment and ratcheting are achieved over a wide range.

[0060] Figure 28 shows an embodiment of a cam lock wrench in which the internal claw pivot 76 is no longer circular and protrudes with a cross-sectional width equal to the slip fit within the channel when rotated to the rotation limiting stop device 82. When rotated toward the frame (i.e., toward the first bearing surface 78) by the reaction force from the fastener, two points on the pivot 76 (the first and second points) 212, 214, offset from each other along the line of action, come into contact with the inner surface of the channel and wedge against these surfaces. Friction from the perpendicular reaction force prevents the movement of the claw along the line of action of the channel, allowing the transmission of torque to the fastener. Opposing rack gear teeth are omitted, and the claw can be stopped at any position in its range, creating infinite adjustment in contrast to the discrete positions achieved with gear teeth.

[0061] Figure 29 shows an embodiment of a linear shaft wrench in which primary kinematics are achieved via a sleeve 216 on a frame that performs linear sliding. An inner pawl 18 is pivotably connected to the sleeve 218. The frame-adjacent side of the pawl consists of two flat facets (first and second facets) 220, 222 joined by a fillet with a radius equal to the distance between the hinge center and the frame surface at an angle representing a desired range of rotation. Thus the pawl is constrained to a set uniform hinge-frame distance on the range of linear sliding. The inner pawl rotates freely between two set angles, which are the range set by the two facets 220, 222, and alternately contacts the frame at the maximum and minimum values ​​of the rotation range. The rotational constraints required for the locking and ratcheting kinematics are thus achieved. The sliding and pawl assembly is biased to the closed position of the pawl by any sufficient geometry of a spring 224 equivalent to that of the main embodiment of the kinematics described above.

[0062] Figure 30 shows an embodiment of a cam wrap wrench in which primary kinematics are achieved via a sleeve 225 on a frame that performs linear sliding. The inner claw 18 is firmly fixed to the sleeve at 227. The frame-adjacent side of the claw consists of two flat facets 229, 231 joined at an angle representing the desired range of rotation by a fillet with a radius equal to the distance between the hinge center and the frame surface. A stopping surface representing the opening limit of rotation is fixed parallel to and at a constant distance from the inner surface on the opposite side of the sleeve. When in the open position, the claw assembly slides freely on the frame. When biased to the closed position by a reaction force on the fastener due to torque, the inner surface of the sleeve is pushed against and contacts the frame, as is the fillet radius of the claw described above. The friction resulting from these reaction forces restrains the claw, and thus torque can be transmitted. In this embodiment, gear teeth are omitted.

[0063] Figures 31 and 32 show one embodiment of a variable-range wrench in which modified kinematics are achieved via a sleeve 235 on a frame that performs linear sliding. An inner claw 18 is firmly fixed to the sleeve. The side of the claw adjacent to the frame consists of a single flat facet 234. This facet is parallel to the inner surface of the frame and is kept in contact by the width of the sleeve opening. The sleeve is lockable at discrete positions on its range of motion on the frame by a lock that prevents linear movement, including a sleeve lock member 236 having teeth 238. The outer claw member 12 is hinged and spring-biased, as described in previous embodiments. The range of a wrench with only a spring-biased movable outer claw is limited, but this range itself can be offset more or less by a lockable movable inner claw.

[0064] Figures 33 and 34A-34C illustrate one embodiment of a keyed constant-tension pivot, which comprises a pliers frame handle with a grooved circular opening / hole, a grooved female-threaded pivot barrel 250, a screw 252, two bearing washers 254, 256, a rectangular wire 258 of a certain length acting as a key, and a blade 260. The grooves in the frame opening and barrel are aligned with the insertion axis of the fastener. The grooves represent half of the wire cross-section and, when aligned, form a keyway for the wire. Once the wire is inserted, rotation within its recess by the pivot barrel is prevented. The corresponding screw is located on the shoulder of the frame opening and acts as the lead screw of the pivot barrel. In this configuration, the pivot cannot rotate, and to open the blade, the blade must rotate relative to the barrel. This rotation cannot be transmitted to the fastener, and the fastener is not subjected to alternating movements that cumulatively result in loosening the set pivot tension. The pivot acts like a vise / clamp, allowing the user to semi-permanently set the desired friction to match their preferred open action.

[0065] Any features or attributes of the embodiments and modifications described herein can be used in combination with any other features and attributes of the embodiments and modifications described herein, as desired.

[0066] Although the present invention has been shown and described in relation to one or more predetermined embodiments, it is evident that the present invention can be embodied in many different forms, and that many other modifications and variations are possible without departing from the spirit and scope of the invention.

[0067] Furthermore, although exemplary embodiments have been described herein, it will be readily apparent to those skilled in the art that these exemplary embodiments are merely illustrative and should not be construed as limiting the scope of the claims in any way. The scope of the present invention is, on the contrary, defined not by the text of the specification above, but solely by the appended claims and their equivalents.

Claims

1. It is equipped with an open-end wrench mechanism, and the open-end wrench mechanism is A wrench frame member that defines the outer claw portion of the open-end wrench mechanism, An inner claw member is displaceably connected to the wrench frame member by a sleeve, wherein the inner claw member is fixedly connected to the sleeve, and the sleeve is slidably connected to the outer claw portion. The sleeve includes an internal claw member that can be locked at discrete positions in a range of movement along the wrench frame member by a lock that prevents linear movement, The outer claw portion of the wrench frame member is configured to cooperate with the inner claw member to apply torque to the fastener when the user applies force to the open-end wrench mechanism, thus forming a multi-tool device.

2. The aforementioned outer claw portion comprises first and second outer claw portions that are hinged together via a pin and biased to a closed position by a spring. The multi-tool device according to claim 1, wherein the first outer claw portion has a stopping device that restricts the movement of the second outer claw portion to the closed position.

Images