Multipurpose folding tool including corkscrew

Abstract: A multipurpose folding tool (16), for use by picnickers and travellers, including a corkscrew (40), a crown cap remover (78), and a can opener (80), as well as a small fork (36) and a small butter knife (32). Both the corkscrew (40) and a brace (42) for use together with it fit close to the handles (20,22) of the tool when the tool is in a compact, folded configuration. A spring (100) in one handle keeps the corkscrew safely folded when not in use, and a spring (122) on the brace keeps it in a desired position relative to the handles. The tool also includes folding pliers (18) and may include folding screwdrivers, knife blades, and scissors.

Description: BACKGROUND OF THE INVENTION The present invention relates to multipurpose folding tools, and in particular to such a tool incorporating a corkscrew and other tools useful in connection with packaged foods. Corkscrews, bottle openers, and can openers of various types have been known for many years and long have been included in multipurpose folding tools. More recently, multipurpose folding tools including pliers, as well as various other tool blades and bits, have been available, as disclosed, for example, in Berg et al. U.S. Patent No. 5,745,997. Multipurpose folding fools according to the preamble of claim 1 and known from DE 946989 U or FR 2760955 A. Some previously available tools including corkscrews have either had very limited capabilities with respect to tasks other than opening bottles, or else have been undesirably bulky and heavy to carry in view of the tasks which such tools have been capable of performing. Other previously available tools including corkscrews have been incapable of being folded into a compact configuration free from sharp edges or elements which could become snagged in the pocket of a person carrying such tools. What is desired, then, is an improved multipurpose folding tool that includes a corkscrew, which can be placed into a compact configuration, and which functions conveniently and adequately to remove corks from bottles, to remove crown caps from bottles, and to open cans having metal lids attached by crimped rims. Such a multipurpose folding tool should also be capable of performing other routine tasks common to small hand tools. SUMMARY OF THE INVENTION The present invention provides a multipurpose folding tool which overcomes the previously-mentioned shortcomings and the disadvantages of some previouslyknown multipurpose tools by providing a multipurpose folding tool incorporating a corkscrew housed in a handle of such a tool in a location making the corkscrew readily available for use, together with a brace for use together with the corkscrew to provide necessary leverage to remove a cork from a bottle neck. The invention is defined by the attached claim 1. Further embodiments at the invention are defined in the dependent claims. The foregoing and other objectives, features, and advantages of the invention will be more readily understood upon consideration of the following detailed description, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS FIG. 1 is an elevational view of a multipurpose folding tool embodying the present invention, in a fully unfolded configuration. FIG. 2 is a left side elevational view of the tool shown in FIG. 1, in a fully-folded configuration. FIG. 2a is a detail view of a portion of a corkscrew brace showing an alternative embodiment of one aspect of the invention. FIG. 3 is a right side elevational view of the tool shown in FIG. 1, in its fully-folded configuration. FIG. 4 is a top plan view of the multipurpose folding tool shown in FIGS. 1-3, in its fully-folded configuration. FIG. 5 is a top plan view of a portion of the tool, with a combination can opener and bottle opener in a fully-extended position. FIG. 6 is a section view, taken along line 6-6 in FIG. 5. FIG. 7 is a section view, taken along line 7-7 in FIG. 4. FIG. 8 is a side elevational view of the tool showing the use of the corkscrew to remove a cork from a bottle neck. FIG. 9 is a partially cutaway view of a portion of the tool, showing the manner of use of the can opener. FIG. 10 is a side elevational view of the tool showing its use in removing a crown cap from a bottle. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawings which form a part of the disclosure herein, a multipurpose folding tool 16 is shown in FIG. 1 in a fully unfolded configuration for the sake of showing each of the several folding blades and tools which are included in one exemplary embodiment of the present invention. The folding multipurpose tool 16 includes a pair of pliers 18 equipped with channel-shaped handles 20 and 22 that can be folded. That is, the inner ends of the handles 20 and 22 are attached to the pliers by pivots and can be rotated around the pliers' jaws to house them within cavities 24 and 26 defined, respectively, by the handles 20 and 22. A plurality of other tools are mounted in the handles 20 and 22 at the opposite, outer ends 28 and 30 thereof, spaced apart from the pliers 18. Tool blades including a knife 32, such as a butter or paté knife, a sharp-edged knife, and three screwdriver bits are all mounted for rotation independently about a pivot shaft 34 in the handle 22, between a folded position for storage within the cavity 26 and an extended position with respect to the handle 22. Similarly, a tool blade such as a small fork 36 is mounted rotatably on a pivot shaft 38, alongside another screwdriver blade and a folding scissors, all of which can be moved independently about a pivot axis defined by the pivot shaft 38, between a folded position within the cavity 24 and an extended position with respect to the handle 20. With all of those tools folded, room still remains for the pliers 18 also to be enclosed within the cavities 24 and 26, with the open sides of the channel-shaped handles facing toward each other. A corkscrew 40 and a corkscrew brace member 42 are attached to the handle 20. The corkscrew 40, shown in an extended position in FIG. 1, has a flat, elongate base portion 44 that is attached to the handle 20 by a pivot connection, which may include a rivet, defining a pivot axis 46 about which the corkscrew 40 is moveable through an angle greater than 90°. The brace 42 is attached to the handle by the pivot shaft 38 and may be rotated with respect to the handle 20 about the pivot shaft 38. As shown in FIGS. 2, 3 and 4, the folding multipurpose tool 16 has a compact configuration in which the pliers 18 and the several blades and tool bits, including the knife 32 and the fork 36, are in respective folded positions and enclosed within the cavities 24 and 26. At the same time, the corkscrew 40 and the brace 42 are in folded positions parallel with the length 48 of the handle 20. The handle 20 may be made, for example, by bending sheet metal, and includes a first side 50, a second side 52, and a back 54, together defining the generally U-shaped channel form of the handle 20. The first side 50 and the back 54 are connected with each other along a fold or angle 56 extending longitudinally of the handle 20, and an opening 58 extending along the angle 56 is defined partially by the back and partially by the first side 50. The opening 58 is defined by a straight margin 62 of the back 54, and a rear portion 60 of the opening 58 is narrower than the forward portion of the opening. In the rear portion 60 of the opening 58, the first side 50 is cut away only as far down as the bottom or inner surface of the back 54, but in the forward portion of the opening 58 the first side 50 is cut away to a greater distance 64 downward from the angle 56. The corkscrew 40 includes a worm portion having a diameter 66 and defining a central longitudinal axis 68. When the corkscrew 40 is in its folded position as shown in FIGS. 2, 4 and 5, none of the worm portion extends outward (upward in FIG. 2) beyond the back 54 of the handle 20, as the distance 64 is greater than the diameter 66 and the location of the pivot axis 46 places the central longitudinal axis 68 well below the back 54. The central longitudinal axis 68 is located outside the cavity 24, however, it is spaced laterally a small distance outside the first side 50 of the handle. A tip 70 of the corkscrew 40 is located within the cavity 24 where it is prevented from accidentally snagging something such as the fabric of a pocket in which the tool 16 is being carried. The brace 42, like the handle 20, is in the form of a channel, and has a central back portion 72, a first, or can opener side 74, and an opposite second side 76. Each of the sides 74 and 76 defines a respective bore receiving the pivot shaft 38 and defining a pivot axis about which the brace 42 can be rotated between its folded position and a range of extended positions in which it is used. Spaced forward along the brace 42 from the bores are a pair of forwardly open hooks 78 defined by the sides 74 and 76. On the first side 74, a short, straight can opener blade 80 is located a short distance ahead of the hook 78, and has an arcuate rear end 81. At a forward end of the can opener blade 80 a forward-facing surface of the first side 74 defines a foot 82. A heel portion 84 extends beyond the foot to the front end of the back portion 42. As shown in FIG. 2a, a can opener blade 86, an alternative to the form of the straight can opener blade 80, has a rear end 87 and a piercing tip 88 protruding slightly with respect to a more rearwardly located part of the blade 86, in order to provide more concentrated pressure with the tip 88 to pierce a can lid to begin the process of opening a can in the manner that will be described presently. Ahead of the hook 78 on the second side 76 of the brace 42, instead of the can opener blade 80, there is a rocker 94, whose profile is shown clearly in FIGS. 3 and 6. The rocker 94 is aligned, laterally with respect to the brace 42, with the can opener blade 80, and the two hooks 78 on the respective sides 74 and 76 are similarly aligned with each other. As may be seen in FIG. 5, the brace 42 has an inside width 96 which is only slightly greater than the outside width 98 of the handle 20, so that the brace 42 is nested closely around the back 54 and sides 50 and 52 of the handle 20 when the brace 42 is in its folded position as shown in FIGS. 2-4. As a result, the first side 74 of the brace 42, and the foot 82, are aligned with the central longitudinal axis 68 of the corkscrew 40. Additionally, because the first side 74 is oriented perpendicular to the pivot shaft 38, and the longitudinal axis 68 of the corkscrew 40 is perpendicular to the pivot axis 46, the foot 82 always remains in the imaginary plane defined by the longitudinal axis 68 as the corkscrew 40 is moved through an angle about the pivot axis 46, between its folded position and an extended position as shown in FIG. 5. Preferably, the width 96 and width 98 are somewhat less than the diameter of a crown cap, so the number of folding tool blades mounted in the handle 20 could accordingly be limited. Referring to FIGS. 5, 6 and 7, a spring 100 includes a base portion 102 fitted snugly on the pivot shaft 38 and located within the cavity 24. The other tool blades associated with the outer end of the handle 20 keep the spring 100 closely alongside the first side 50 of the handle 20. A stabilizer arm 104 is located within the cavity 24 along a laterally-extending flange portion 106 of the back 54 of the handle 20, and a small finger 108 extends outwardly from the stabilizer arm 104 closely alongside a rear end 110 of the flange 106. The base 102 of the spring 100 is thus prevented from rotating about the pivot shaft 38. The location of part of the spring 100 aligned with an outer margin of the side 50 contributes to the comfort of the tool 16 in use of the pliers 18. Extending forward from the portion of the base 102 furthest from the back 54 of the handle 20 is a cantilevered portion of the spring 100, with a free end 112 extending in a direction parallel with the length 48 of the handle 20. The free end 112 is located closely alongside and deflected slightly by the adjacent side face of the base 44 of the corkscrew 40 when the corkscrew 40 is in the folded position, as shown in FIG. 7, and thus is biased elastically toward the corner 114, acting to hold the corkscrew 40 in its folded position. As shown in FIG.7 the said side face of the base 44 is flat. Referring to FIG. 6, as the corkscrew 40 is moved toward an extended position, the corner 114 forces the free end 112 of the spring 100 to move away from the back 54 of the handle 20 to permit the inner end 116 to move to rest against the free end 112 of the spring. Thereafter, some displacement of the free end 112 is required to move the corkscrew 40 from the position extending perpendicular to the length 48 as shown in FIG. 6. The spring 100 thus holds the corkscrew in a preferred position perpendicular to the handle 20 as the screw is turned into a cork during use. Once the corkscrew has engaged the cork, the corkscrew 40 can be moved about the pivot axis 46 as required during use of the tool, as will be explained presently. The base portion 102 of the spring 100 includes an arcuate cam surface along the outer end of the handle 20, the cam surface including a detent notch 118 adjacent the finger 108, and a deeper stop notch 120 on the opposite side of the base 102. As may be seen best in FIGS. 4, 6, and 7, a small finger-like latch spring 122 extends rearwardly and downwardly from the rear end of the back portion 72 of the brace 42. The spring 122 rides upon the cam surface of the base 102 of the spring 100 and rests in the detent notch 118 to keep the brace 42 in its folded position along the back 54 of the handle 20 as shown in FIG. 7. The spring latch 122 also enters the stop notch 120 when the brace 42 is in a fully-extended position as shown in FIG. 6, to prevent the brace 42 from rotating further with respect to the handle 20, during its use to open a can or to remove a crown cap from a bottle. The flange 106 extends laterally inward from the first side 50, to which it is rigidly attached, and a cantilevered spring 124 is separated from the flange 106 by a slit 126 defined in the back 54, as seen best in FIG. 5. Because the spring 124 is separated from the flange 106, the other tool blades mounted on the pivot shaft 38 and stored in the first handle 20, including the fork 36, may be rotated about the pivot shaft 38 from their respective folded positions to their respective extended positions. The spring 124 acts on their bases to keep a selected blade extended in a manner which is well-known in folding multipurpose tools, without affecting the spring 100. As shown in FIG. 8, the folding multipurpose tool of the present invention is used to remove a cork 130 from a bottle 132 in a manner generally similar to that used with well-known "waiter-type" corkscrews, with the difference that because of the location of the corkscrew 40 adjacent the first side 50 of the handle 20 only the single foot 82 is placed atop the lip 134 of the bottle neck 132. The rocker 94 then is located alongside and spaced slightly apart from the bottle neck 132, but not in contact with it. Since the foot 82 is aligned with the longitudinal axis 68 of the corkscrew 40, the brace 42 adequately supports the handle 20 so that the pivot shaft 38 acts as a fulcrum about which the handles 20 and 22 are rotated together with respect to the brace 42 and the base 44 of the corkscrew 40 as the corkscrew 40 raises the cork 130. As the foot 82 of the brace 42 rests on the lip 134 of the bottle neck the friction resulting from pressure of the finger-like spring 122 against the cam surface on the base 102 of the spring 100 urges the brace 42 toward the cork as the handle 20 is raised to pull the cork 130 from the bottle neck 132. To cut open a metal can, with the brace 42 in the fully-extended position shown in FIGS. 6 and 9, the hook 78 on the first side 74 of the brace is engaged with the underside of the crimped rim 136 of the can. Raising the handles 20 and 22 then causes the can opener blade 80 to pierce the top of the can on the inner side of the crimped rim 136, moving down as indicated by the arrow 137. The can opener blade 80 is then raised and the can opener is moved slightly in the direction indicated by the arrow 138. The top of the can is cut free from the rim 136 by repeating the same sort of cutting by short steps around the circumference of the can. With the brace 42 in the extended position as shown in FIGS. 6 and 10, the multipurpose folding tool 16 may also be used to remove a crown cap 140 from a bottle 142. Preferably, both of the hooks 78 are used to engage the edge of the crown cap at the same time, so that both the rocker 94 and the can opener blade 80 rest atop the crown cap 140, and the inner ends of the handles 20 and 22 are then raised, keeping the hooks 78 engaged to pull the crown cap 140 free from the bottle 142. The terms and expressions which have been employed in the foregoing specification are used therein as terms of description and not of limitation, and there is no intention, in the use of such terms and expressions, of excluding equivalents of the features shown and described or portions thereof, it being recognized that the scope of the invention is defined and limited only by the claims which follow.

Claims: A multipurpose folding tool (16), comprising: (a) an elongate handle (20) having a length (48) and including an elongate channel defined partially by a first side wall (50) and a back (54) of said elongate handle (20), said channel defining a blade-receiving cavity (24); (b) at least one tool blade (36) attached to said handle by a first pivot (38) and movable with respect to said handle (20) about said first pivot (38), between an extended position and a folded position in said cavity (24); (c) a corkscrew (40) having a base (44) attached to said handle (20) and movable with respect to said handle (20), about a second pivot (46) spaced apart from said first pivot (38) along said length (48) of said handle (20), between respective folded and operative positions; and characterized by (d) a spring (100) located in said cavity (24) and having a base (102) attached to said handle (20) by said first pivot (38), said base (102) being located alongside and parallel with said first side wall (50), said back (54) defining a flange (106) having a rear end (110), and a margin (108) of said base (102) of said spring (100) extending along said flange (106) and abutting against said rear end (110), said flange (106) thereby preventing said base (102) of said spring (100) from rotating about said first pivot (38) with respect to said first side wall (50), and said spring (100) extending from said base (102) thereof to said base (44) of said corkscrew (40). The multipurpose folding tool (16) of claim 1 wherein said handle (20) has a pair of opposite ends and wherein said first pivot (38) is located adjacent one (28) of said opposite ends. The multipurpose folding tool (16) of claim 1 wherein said base (44) of said corkscrew (40) has a flat side and a portion (112) of said spring (100) extends along said flat side and is biased elastically toward said flat side, thereby holding said corkscrew (40) in said folded position. The multipurpose folding tool (16) of claim 1 wherein said back (54) defines a spring (124) biased toward said tool blade (36), said spring (124) extending alongside said flange (106) and being separated therefrom by a slit (126) defined in said back (54). The multipurpose folding tool (16) of claim 1, further including a folding corkscrew brace (42) having the form of a channel including a pair of sides (74, 76) and a back portion (72), said folding corkscrew brace (42) being attached to said handle (20) by said first pivot (38) and being movable with respect to said handle (20) about said first pivot (38) between an extended, bracing position and a folded position wherein said brace (42) extends along said back (54) of said handle (20). The multipurpose folding tool (16) of claim 5 wherein said corkscrew (40) has a longitudinal central axis (68) defining an imaginary plane as said corkscrew (40) moves about said second pivot (46), one of said sides (74, 76) of said corkscrew brace (42) being located in said imaginary plane. The multipurpose folding tool (16) of claim 5, including a cam (102) located adjacent to said first pivot (38), said corkscrew brace (42) having a back portion (72) and including a finger-like spring (122) projecting rearwardly from said back portion (72) and engaging said cam (102). The multipurpose folding tool (16) of claim 1, further including a folding bottle opener (76) having the form of a channel including a pair of sides (74, 76) and a back portion (72), said folding bottle opener (76) being attached to said handle (20) by said first pivot (38) and being movable with respect to said handle (20) about said first pivot (38), between an extended position and a folded position wherein said bottle opener (76) extends along said back (54) of said handle (20). The multipurpose folding tool (16) of claim 8, including a cam (102) located adjacent to said first pivot (38), said bottle opener brace (42) having a back portion (72) and including a finger-like spring (122) projecting rearwardly and downwardly from said back portion (72) and engaging said cam (102). The folding multipurpose tool (16) of claim 1, further including a folding can opener (74) having the form of a channel including a side (74) and a back portion (72), said folding can opener (74) being attached to said handle (20) by said first pivot (38) and being movable with respect to said handle (20) about said first pivot (38), between an extended position and a folded position wherein said can opener (74) extends along said back (54) of said handle (20). The multipurpose folding tool (16) of claim 10, including a finger-like spring (122) projecting rearwardly and downwardly from said back portion (72) of said folding can opener (74). The multipurpose folding tool (16) of claim 1, further characterized by a combined bottle opener (76) and can opener (74), including: (a) a channel-shaped member (42) including a central back portion (72) and a pair of apart-spaced side portions (74, 76), said channel-shaped member (42) being attached to said handle (20) by said first pivot (38), said side portions (74, 76) defining a transverse pivot axis (46) adjacent a rear end of said channel-shaped member (42); (b) each of said side portions (74, 76) including a forwardly-open hook (78) located forward from said transverse pivot axis (46); (c) a first one (74) of said side portions (74, 76) including a can opener blade (80) spaced forwardly apart from said hook (78) thereof, whereby said first side portion (74) functions as a can opener with said hook (78) engaging a rim of a can and said can opener blade (80) cutting a top of said can along said rim; and (d) a second one (76) of said side portions (74, 76) including a rocker (94) spaced forwardly apart from said hook (78) thereof. The multipurpose folding tool (16) of claim 12, wherein the combined bottle opener (76) and can opener (74) includes a finger-like spring (122) projecting rearwardly and downwardly from said back portion (72) in position to engage a cam (102) associated with said handle (20) of said tool (16) to hold said combined bottle opener (76) and can opener (74) in a selected position of rotation about said pivot axis (46) with respect to said tool handle (20). The multipurpose folding tool (16) of claim 12 wherein said can opener blade (80) includes a substantially straight cutting edge having an arcuate rear end (81). The multipurpose folding tool (16) of claim 12 wherein said can opener blade (80, 86) includes a piercing tip (88). The multipurpose folding tool (16) of claim 1, further characterized in that : (a) said first side wall (50) is interconnected with said back (54) along a longitudinally-extending angle portion (56) of said handle (20), said first side wall (50) and said back (54) defining an elongate opening (58) extending along said angle portion (56) of said handle (20) and a portion of said corkscrew (40) extends through said opening (58) and is located inside said handle (20) when said corkscrew (40) is in said folded position, said tool (16) also including a brace (44) attached to said handle (20) by said first pivot (38), said brace (42) being rotatable between a folded position and an extended position, about said first pivot (38), and said brace (42) including a foot (82) spaced apart from said first pivot (38) and located closely alongside said first side (50) of said handle (20) when said brace (42) is in said folded position. The multipurpose folding tool (16) of claim 16, including a cam (102) located within said handle (20) adjacent said first pivot (38), wherein said brace (42) has a rear end and includes a latch spring (122) extending from said rear end and resting in contact with said cam (102). The multipurpose folding tool (16) of claim 17 wherein said cam (102) includes a detent (118) and said latch spring (122) rests on said detent (118) when said brace (42) is in said folded position. The multipurpose folding tool (16) of claim 17 wherein said brace (42) includes a bottle cap remover (76) including a pair of hooks (78) and a pair of rockers (80, 94), and wherein said cam (102) includes a stop notch (120) and said latch spring (122) rests against said stop notch (120) when said brace (42) is in said extended position. The multipurpose folding tool (16) of claim 17 wherein said brace (42) includes a can opener (74) including a hook (78) and a can opener blade (80) and wherein said cam (102) includes a stop notch (120) and said latch spring (122) rests against said stop notch (120) when said brace (42) is in said extended position. The multipurpose folding tool (16) of claim 17 wherein said first pivot (38) is defined by a tool pivot shaft mounted in said handle (20), and wherein said cam (102) is mounted on said tool pivot shaft. The multipurpose folding tool (16) of claim 17 wherein said cam (102) is a part of a base (102) of a spring (100) extending alongside said first side (50) of said handle (20) and in contact with said base (44) of said corkscrew (40). The multipurpose folding tool (16) of claim 16 wherein said corkscrew (40) has a central longitudinal axis (68) located outside said handle (20). The multipurpose folding tool (16) of claim 23 wherein said foot (82) is located in a plane defined by said central axis (68) as said corkscrew (40) moves about said first pivot axis (38). The multipurpose folding tool (16) of claim 16 wherein said corkscrew (40) has a tip (70) located within said handle (20) when said corkscrew (40) is in said folded position.

Inventors: ANDERSON CRAIG J, RIVERA BENJAMIN C, ANDERSON, CRAIG J., RIVERA, BENJAMIN C.
Applicants: LEATHERMAN TOOL GROUP INC, LEATHERMAN TOOL GROUP, INC.
Application year: 2000
Main classification: B25F1
IPC codes: B67B7, B25F1, B26B11