Lever And Connecting Link Patents (Class 30/251)
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Patent number: 7594333Abstract: A gardening tool with a retaining assembly includes a first rod pivotally installed to a second rod; the first rod having a track for assembling a retaining portion; the first rod further having an elastic unit at a side having the track; the second rod being rotatably installed to the first rod; one end of the second rod being formed with a recess; and the retaining portion being movable in the track; the elastic unit resisting against the retaining portion so as to be buckled to the recess and thus an orientation of the second rod is fixed.Type: GrantFiled: December 13, 2006Date of Patent: September 29, 2009Inventor: Chang-Ying Chen
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Patent number: 7530172Abstract: A pair of long-arm gardening shears include a hollow mounting seat, an extension tube, a cutting tool, a link, a toothed rack, two spaced driven gears, and two elongated handles. Each of the elongated handles is provided with a toothed drive portion meshing with a respective driven gear to rotate the respective driven gear. Thus, the cutting tool is driven by a leverage action of the handles and by a gearing action of the toothed drive portions of the handles, the driven gears and the toothed rack, so that the long-arm gardening shears can perform a cutting action in a labor-saving manner, thereby greatly saving the user's energy.Type: GrantFiled: May 30, 2007Date of Patent: May 12, 2009Assignee: Jiin Haur Industrial Co., Ltd.Inventor: Shih-Piao Wu
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Publication number: 20090071013Abstract: A handheld cable cutter is provided with two handles, a stationary cutting blade, and a rotatable cutting blade pivotally connected to the stationary cutting blade. One of the handles is movable such that movement of the movable handle toward and away from the other, stationary handle drives the rotatable cutting blade toward the stationary cutting blade. The stationary handle includes an enlarged, integral stabilizing base which rests upon a support surface when the movable handle is actuated to cut a cable.Type: ApplicationFiled: September 4, 2008Publication date: March 19, 2009Inventors: Bruce W. Hartranft, Bruce P. Konen
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Publication number: 20080295341Abstract: A hand-operated cutting tool includes a first and second handles, with first ends of the handles pivotally coupled together to form a first pivot point. The tool also includes first and second elongated members each having a first end and a second end and an intermediate region therebetween, the second ends having a cutting jaw. A second pivot point couples the intermediate regions of the elongated members to one another. A third pivot point couples the first end of the first elongated member to the first handle. A fourth pivot point couples the first end of the second elongated member to the second handle, so that the handles and the elongated members and the pivot points cooperate as a four-bar linkage for movement of the cutting jaws between an open position and a closed position.Type: ApplicationFiled: June 4, 2007Publication date: December 4, 2008Inventors: Daniel J. Lipscomb, Jason Crowell
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Patent number: 7454837Abstract: A pair of effort-saving shears primarily comprises: a first shear element having a combining portion with a pivot hole and a shear element combining hole thereon, and a first handle further attached to the first shear element; a second shear element having combining portion with a shear element combining hole; a handle shaft axially positioned in a second handle and having a combining portion at one end; an effort-saving transmission assembly including a toothed block fixed on one side of the combining portion of the handle shaft, and a toothed hole provided on the combining portion of the second shear element, wherein the toothed hole enclose and partially engage the toothed block by parts of the teeth thereof; and wherein the combining portion of the first shear element overlaps the combining portion of the second shear element; a pivot member, piercing through said pivot holes to be placed between the toothed hole and the toothed block; and a shear element combining pin piercing through said shear elementType: GrantFiled: October 14, 2006Date of Patent: November 25, 2008Assignee: Natura Innovation Ltd.Inventor: Su-Hua Shan
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Patent number: 7346991Abstract: A hand tool for use by one hand provides double compound leverage of the force exerted on the handles to the jaws. This is achieved by adding additional pivots and lever arms between the handles and the jaws. The jaws may take the form of a sheet metal snip or a pruning shear.Type: GrantFiled: June 29, 2005Date of Patent: March 25, 2008Inventor: Paul M. Janson
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Patent number: 7328513Abstract: A cutter includes a lever having a handle on one end and a fixed jaw on the other end and having one or more catches extended from the fixed jaw and having a groove formed in the fixed jaw, a cutter device is pivotally attached to the lever and has a cutter blade movable toward and away from the fixed jaw, a hand grip is pivotally coupled to lever and coupled to move the cutter device toward and away from the fixed jaw. One or more carriers each includes one end engageable with the catch of the lever, and a fin for engaging into the groove of the fixed jaw and for quickly anchoring and positioning the carrier to the fixed jaw of the lever without fasteners.Type: GrantFiled: January 31, 2006Date of Patent: February 12, 2008Inventor: Chung Cheng Yang
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Patent number: 7322111Abstract: A lever actuated cutting tool that allows ground level cutting of shrubs and small trees from a standing position. The design of the cutting tool takes advantage of the principles of leverage and resistive force, and also incorporates a pendulum swing, to provide a tool that is able to generate a tremendous amount of cutting force. A padded handle is provided at the long end of the lever and a first sharpened steel blade is attached to the cutting end of the lever. The lever is rotate-ably attached to the fulcrum and the fulcrum lies on the ground during operation. A second sharpened steel blade is immovably attached to the base of the fulcrum, and the trunk of the shrub to be removed is positioned in between the two blades. The cutting action is accomplished by moving the lever downward toward the ground. The force applied by the user is multiplied by the lever and transferred to the first cutting blade.Type: GrantFiled: February 23, 2005Date of Patent: January 29, 2008Inventors: Douglas C. Meador, Marvin T. Meador
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Patent number: 7127819Abstract: Provided is scissors comprising a movable first handle unit; a stationary second handle unit including a bifurcated jaw, a pivotal blade in the jaw, a spring biased pivotal plate member in the jaw and including teeth, a gear and ratchet wheel assembly, and a spring biased pivotal pawl; and a spring biased lever including a pawl member engaged with the ratchet wheel. Continuously pivoting the first handle unit about the second handle unit by moving the first handle unit alternately back and forth in each action of pivoting the first handle unit toward the second handle unit will pivot the first and second protrusions counterclockwise, rotate the gear and ratchet assembly clockwise, and pivot the teeth counterclockwise to cut a pipe anchored in the mouth.Type: GrantFiled: November 1, 2005Date of Patent: October 31, 2006Inventor: Yong Sheng Huang
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Patent number: 7047853Abstract: A shearing tool has a fulcrum shaft, a first blade rigidly attached to the fulcrum shaft, a first element also rigidly attached to the fulcrum shaft and spaced apart on the shaft from the first blade, and a second blade contiguous with a second element, the second blade pivoted on the fulcrum shaft at one end of the blade, and between the attachment positions of the first blade and the first element such that relative rotation of the first and second elements causes relative rotation of the first and second blades producing a shearing action.Type: GrantFiled: June 28, 2004Date of Patent: May 23, 2006Inventor: Donald J. Brockhage
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Patent number: 6941663Abstract: In a cable cutter (10) for cutting cables, leads, pipes and the like, two intersecting levers (14, 16) are articulated by a common first pivot joint (12). One of the levers (14, 16) consists of two parts, a front lever section (26) forming a cutting jaw (22, 24) and a rear lever section (28) forming a handle (20). These lever sections (26, 28) are articulated by a second pivot joint (30) and are interlockable in at least two distinct angular positions (32, 34). A limit by way of a glide means (38) is guided in a recess (36) for engagement of an associated recess each (40, 42) in the distinct angular positions (32, 34) of the lever sections (26, 28). There, the glide means (38) is automatically lockable, being preferably a spring-loaded pin supported on the front lever section (26) for movement in a longitudinal direction, either parallel or at a right angle to the axes of rotation (A1, A2) of the pivots joints (12, 30). The pin side facing the rear lever section (28) may be widened or broadened.Type: GrantFiled: December 12, 2002Date of Patent: September 13, 2005Assignee: Harry P. Will Werkzeugfabrik GmbH & Co. KGInventor: Thomas E. Still
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Patent number: 6938347Abstract: The invention relates to shears comprising a stationary blade (1) and a movable blade (2) which moves during the shearing movement of the shears. An operating mechanism (5) is arranged to affect a point of the pin (6) located at a distance from the movable blade (2). When the shears are being closed, a force is thus generated which also tries to pull the movable blade (2) towards and against the stationary blade (1) and to keep the blades (1, 2) in contact with each other. The operating mechanism (5) is arranged to affect the joint pin (6) through a sleeve-like part (7). The interior of the sleeve comprises two conical sections (8, 9), the narrowest point of the interior of the sleeve determining the point from which the sleeve-like part (7) affects the joint pin (6).Type: GrantFiled: May 2, 2003Date of Patent: September 6, 2005Assignee: Fiskars Consumer Oy AbInventors: Olavi Lindén, Markus Paloheimo
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Publication number: 20040231165Abstract: A shearing tool has a fulcrum shaft, a first blade rigidly attached to the fulcrum shaft, a first element also rigidly attached to the fulcrum shaft and spaced apart on the shaft from the first blade, and a second blade contiguous with a second element, the second blade pivoted on the fulcrum shaft at one end of the blade, and between the attachment positions of the first blade and the first element such that relative rotation of the first and second elements causes relative rotation of the first and second blades producing a shearing action.Type: ApplicationFiled: June 28, 2004Publication date: November 25, 2004Inventor: Donald J. Brockhage
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Patent number: 6813836Abstract: A tool for cutting rigid sheet material comprises a first shearing member having a first cutting edge; a second shearing member pivotally connected at one end to the first shearing member, the second shearing member have a second cutting edge engaged with the first cutting edge; and a pair of handles operatively connected to the shearing members for pivotally moving the shearing member relative to one another. The first shearing member is preferably a twisted, U-shaped member having two legs, with the second shearing member mounted between the legs. An opening or slot is provided above the second shearing member to accommodate movement of sheet material over both the first and second shearing members. The tool cuts both left and right curves and straight lines in rigid materials such as sheet metal.Type: GrantFiled: June 28, 2002Date of Patent: November 9, 2004Inventor: Andrzej Graca
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Patent number: 6785969Abstract: A tree pruner includes a base member that has a connector connected to a shaft and a main plate longitudinally securely connected to the connector. A first groove is defined in the main plate and downward extends to a periphery of the main plate. A second groove is defined in the main plate and upwardly extends to the periphery of the main plate. A blade is pivotally mounted on the main plate. The blade includes a first side forming a first cutting edge corresponding to and moved within the first groove and a second side forming a second cutting edge corresponding to and moved within the second groove. A driving device is attached to the second side of the blade for reciprocally driving the blade.Type: GrantFiled: November 25, 2002Date of Patent: September 7, 2004Inventor: Kuang Pin Wang
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Patent number: 6772520Abstract: A pair of pruning shears includes a first handle, a blade seat, a blade, a second handle, a connecting member, and a spring. Thus, the spring mounted between the first handle and the second handle is disposed at an oblique state, thereby decreasing the pressing force applied on the user's hand, so that the user can hold the grip of the first handle and the second handle smoothly and comfortably, thereby facilitating the user operating the pruning shears.Type: GrantFiled: September 29, 2003Date of Patent: August 10, 2004Inventor: Cheng-Hsiung Shih
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Patent number: 6766581Abstract: A tool for cutting/crimping a workpiece, such as a cable, includes an automatic rapid blade advance such that a blade on a movable jaw of the tool advances toward cutting the cable every time the handles of the tool are closed. The automatic rapid blade advance also advances the blade on the movable jaw toward cutting the cable every time the handles of the tool are opened up until the blade on the movable jaw first encounters a resistive force from the cable. The tool also includes an automatic blade return such that the blade on the movable jaw will automatically return to its original position after the blade has cut through or crimped the cable.Type: GrantFiled: February 20, 2002Date of Patent: July 27, 2004Assignee: Greenlee Textron Inc.Inventor: William F. Nordlin
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Patent number: 6754961Abstract: A shearing tool has a fulcrum shaft, a first blade rigidly attached to the fulcrum shaft, a first element also rigidly attached to the fulcrum shaft and spaced apart on the shaft from the first blade, and a second blade contiguous with a second element, the second blade pivoted on the fulcrum shaft at one end of the blade, and between the attachment positions of the first blade and the first element such that relative rotation of the first and second elements causes relative rotation of the first and second blades producing a shearing action.Type: GrantFiled: July 30, 2002Date of Patent: June 29, 2004Inventor: Donald J. Brockhage
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Patent number: 6752054Abstract: A utility tool utilizing a toggle link mechanism and a method for using the utility tool for providing a substantial mechanical advantage for a user throughout an entire work operation such as cutting sheet material. The tool comprises an upper handle, a jaw pivotally attached to the upper handle and a jaw link rigidly attached to the jaw. The tool further comprises a means for inputting force connected with the upper handle and a handle link rigidly attached to the handle. The tool also comprises a toggle action force transfer mechanism defined by an intermediary link extending between the jaw link and handle link, wherein force inputted to the means moves the intermediary link away from the upper handle.Type: GrantFiled: December 28, 2000Date of Patent: June 22, 2004Assignee: Irwin Industrial Tool CompanyInventor: John Benjamin Knight
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Publication number: 20040064954Abstract: A cable cutting tool includes a first arm having a first jaw member connected to a first handle member and a second arm having a second jaw member pivotally connected to a second handle member. The first and second arms are connected by a fastener and are pivotal with respect to one another about a longitudinal axis of the fastener. A tension element is mounted on the second jaw member and is positioned wholly outside of and out of contact with the second handle member. A take-up element is mounted for rotation on the second jaw member. A latching mechanism is mounted on the second jaw member and is configured to inhibit rotation of the take-up element in a first direction. The take-up element is uninhibited by the latching mechanism when rotating in a second direction. A chain extends over the take-up element and has a first end attached to the first arm and a second end attached to the tension element. The chain is positioned wholly outside of and out of contact with the second handle member.Type: ApplicationFiled: October 2, 2002Publication date: April 8, 2004Inventor: Mark A. Schmidt
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Publication number: 20040020059Abstract: A shearing tool has a fulcrum shaft, a first blade rigidly attached to the fulcrum shaft, a first element also rigidly attached to the fulcrum shaft and spaced apart on the shaft from the first blade, and a second blade contiguous with a second element, the second blade pivoted on the fulcrum shaft at one end of the blade, and between the attachment positions of the first blade and the first element such that relative rotation of the first and second elements causes relative rotation of the first and second blades producing a shearing action.Type: ApplicationFiled: July 30, 2002Publication date: February 5, 2004Inventor: Donald J. Brockhage
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Publication number: 20030229992Abstract: The invention relates to shears comprising a stationary blade (1) and a movable blade (2) which moves during the shearing movement of the shears. An operating mechanism (5) is arranged to affect a point of the pin (6) located at a distance from the movable blade (2). When the shears are being closed, a force is thus generated which also tries to pull the movable blade (2) towards and against the stationary blade (1) and to keep the blades (1, 2) in contact with each other. The operating mechanism (5) is arranged to affect the joint pin (6) through a sleeve-like part (7). The interior of the sleeve comprises two conical sections (8, 9), the narrowest point of the interior of the sleeve determining the point from which the sleeve-like part (7) affects the joint pin (6).Type: ApplicationFiled: May 2, 2003Publication date: December 18, 2003Applicant: Fiskars Consumer Oy AbInventors: Olavi Linden, Markus Paloheimo
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Patent number: 6658967Abstract: A cutting tool comprising a metal plate having a central aperture, a forwardly extending blade and a rearwardly extending tang having a second aperture offset from the central aperture, wherein the plate is coated with an electroless nickel layer. Also included is a first elongated member comprising a first handle terminating at a distal end by a jaw and a second elongated member comprising a second handle. The first and second members are pivotally connected to the plate at the central and second apertures by couplers respectively, so that the blade and jaw pivotably move in response to pivotable movement of the first and second members about the coupler in the central aperture.Type: GrantFiled: March 9, 2001Date of Patent: December 9, 2003Assignee: Aquapore Moisture Systems, Inc.Inventors: Alan Rutkowski, Ken Danio, Ron Smith
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Patent number: 6647630Abstract: The present invention provides a novel stud punch tool for punching a stud. The tool includes a first member, a second member, a third member pivotally connected to the first and second members, and a punch assembly. The first member has an opening for receiving the stud and a bore that is in communication with the opening and which allows the punch assembly to move through the bore and the opening to punch the stud. The second member has slots therein to allow the punching assembly to be slidably mounted therein such that a portion of the punch assembly is capable of being positioned at a first end of the slot when the second member is parallel to the first member and such that the portion is capable of being positioned at a second end of the slots when the second member is angled from the first member.Type: GrantFiled: February 2, 2001Date of Patent: November 18, 2003Assignee: Greenlee Textron Inc.Inventors: James H. Lucas, William F. Nordlin
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Patent number: 6640442Abstract: A cutting stroke-adjustable pruning shears is constructed to include a fixed jaw and a movable jaw pivoted together, the movable jaw having an elongated slot and a plurality of retaining notches in one long side of the elongated slot, a holder shell, the holder shell having two parallel side panels pivoted to a middle part of the fixed jaw at two sides and a spine connected between the parallel side panels, a coupling arm, the coupling arm having one end pivoted to the parallel side panels of the holder shell and an opposite end mounted with a pivot coupled to the elongated slot of the movable jaw and selectively positioned in one of the retaining notches, a tension spring disposed inside the holder shell and connected between the holder shell and the coupling arm, and two handles respectively fastened to the fixed jaw and the holder shell.Type: GrantFiled: April 3, 2002Date of Patent: November 4, 2003Inventor: Thomas Lin
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Publication number: 20030182805Abstract: A pruning device (10) for cutting the highest branches of a fruit tree or the like without the need to resort to the use of a ladder or elevated platform wherein the device (10) includes an elongated hollow shaft member (20) that slidably receives an even longer actuator rod (30) in a reciprocating fashion under the influence of a pair of actuator arm members (31) (32) pivotally associated with both the actuator rod (30) and the hollow shaft member (20); wherein a clipper member (40) is operatively associated with both the upper end of the actuator rod (30) and the upper portion of the hollow shaft member (20) to sever branches when the actuator arm members (31) (32) are brought toward one another.Type: ApplicationFiled: April 2, 2002Publication date: October 2, 2003Inventor: Tom Lau
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Patent number: 6591506Abstract: This invention describes a hand operated, end cutting, sheet metal shear that makes cuts perpendicular to the axis of the tool handle. The shearing surfaces consist of a moving shear blade with a fixed rake angle and shear angle, cutting along a blunt anvil. The shear blade is pivotally mounted to the tool body and actuated by a toggle linkage and a movable handle. A stroke adjustment screw is incorporated into the fixed handle. The blade passes along the fixed anvil in response to squeezing the handles. The blade is angled so that the shearing action takes place sequentially along the anvil edge. The end cutting sheet metal tool is used to produce cuts at an angle to cuts made with sheet metal cutting tools.Type: GrantFiled: September 4, 2001Date of Patent: July 15, 2003Inventor: Donald J Hackman
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Publication number: 20030110640Abstract: An improvement to a severing implement (10) having a pair of relatively movable blade elements (22) (33) that are pivotally connected together as at (52) wherein the improvement comprises a pair of cooperating gripping units (13) (14) for captively engaging and retrieving the severed portion (71) of an item (70) that is completely cut by the blade elements (22) (33) wherein the cooperating gripping units include a capture plate member (40) fixedly secured adjacent the cutting edge (39) of one of the blade elements (33) and a pusher bar member (50) vertically aligned with the cutting edge (23) of the other blade element (22).Type: ApplicationFiled: December 17, 2001Publication date: June 19, 2003Inventor: Willis G. Nickel
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Patent number: 6539632Abstract: A balanced Long Handle Toenail Clipper for allowing a person to cut their toenails without the need to bend over or stand, including a cylindrical tubular housing which encloses a plunger rod, finger grips which are attached to the tubular housing, and a nail clipper having a cutting portion and an actuating lever. A stabilizing arm coupled to the tubular housing adds balance to the device and provides an individual with a clear view of the toenail clipper. A magnifying glass coupled to the tubular housing facilitates viewing of the clipping operation, and a plunger rod is adapted to engage the actuating lever of the nail clipper to effect operation of the latter.Type: GrantFiled: January 16, 2001Date of Patent: April 1, 2003Assignee: Holistic Center of Antioch, Inc.Inventor: Rene Anctil
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Patent number: 6513248Abstract: A pruner has a first elongated member and a second elongated member coupled to a metal plate. The metal plate has a central aperture, a forwardly extending blade and a rearwardly extending tang having a second aperture offset from the central aperture. A jaw is mounted on the first elongated member. A power lever having a first end and a second end. A first coupler pivotably mounted in the central aperture and coupling the first member to the plate, with a second coupler pivotably mounted in the second aperture and coupling the second member to the plate. The power lever is coupled to the first and second elongated members by a third coupler pivotably coupling the first end of the power lever to the second member and a fourth coupler pivotably coupling the second end of the power lever to the first member. The power lever forces the second member to move linearly toward the first member for pivotable movement of the blade and jaw in response to linear movement of the first and second members.Type: GrantFiled: December 20, 2000Date of Patent: February 4, 2003Assignee: Fiskars Consumer Oy AbInventors: Olavi Linden, Markus Paloheimo
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Publication number: 20020170182Abstract: A tool for cutting/crimping a workpiece, such as a cable, includes an automatic rapid blade advance such that a blade on a movable jaw of the tool advances toward cutting the cable every time the handles of the tool are closed. The automatic rapid blade advance also advances the blade on the movable jaw toward cutting the cable every time the handles of the tool are opened up until the blade on the movable jaw first encounters a resistive force from the cable. The tool also includes an automatic blade return such that the blade on the movable jaw will automatically return to its original position after the blade has cut through or crimped the cable.Type: ApplicationFiled: February 20, 2002Publication date: November 21, 2002Inventor: William F. Nordlin
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Publication number: 20020124413Abstract: A cutting tool comprising a metal plate having a central aperture, a forwardly extending blade and a rearwardly extending tang having a second aperture offset from the central aperture, wherein the plate is coated with an electroless nickel layer. Also included is a first elongated member comprising a first handle terminating at a distal end by a jaw and a second elongated member comprising a second handle. The first and second members are pivotally connected to the plate at the central and second apertures by couplers respectively, so that the blade and jaw pivotably move in response to pivotable movement of the first and second members about the coupler in the central aperture.Type: ApplicationFiled: March 9, 2001Publication date: September 12, 2002Inventors: Alan Rutkowski, Ken Danio, Ron Smith
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Publication number: 20020083809Abstract: A utility tool utilizing a toggle link mechanism and a method for using the utility tool for providing a substantial mechanical advantage for a user throughout an entire work operation such as cutting sheet material. The tool comprises an upper handle, a jaw pivotally attached to the upper handle and a jaw link rigidly attached to the jaw. The tool further comprises a means for inputting force connected with the upper handle and a handle link rigidly attached to the handle. The tool also comprises a toggle action force transfer mechanism defined by an intermediary link extending between the jaw link and handle link, wherein force inputted to the means moves the intermediary link away from the upper handle.Type: ApplicationFiled: December 28, 2000Publication date: July 4, 2002Applicant: American Tool Companies, IncInventor: John Benjamin Knight
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Publication number: 20020073555Abstract: A pruner comprising a first elongated member and a second elongated member coupled to a metal plate. The metal plate has a central aperture, a forwardly extending blade and a rearwardly extending tang having a second aperture offset from the central aperture. A jaw is mounted on the first elongated member. A power lever having a first end and a second end. A first coupler pivotably mounted in the central aperture and coupling the first member to the plate, with a second coupler pivotably mounted in the second aperture and coupling the second member to the plate. The power lever is coupled to the first and second elongated members by a third coupler pivotably coupling the first end of the power lever to the second member and a fourth coupler pivotably coupling the second end of the power lever to the first member. The power lever forces the second member to move linearly toward the first member for pivotable movement of the blade and jaw in response to linear movement of the first and second members.Type: ApplicationFiled: December 20, 2000Publication date: June 20, 2002Applicant: Fiskars Consumer Oy AbInventors: Olavi Linden, Markus Paloheimo
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Patent number: 6332274Abstract: A toggle-link type hand tool is provided that includes pivotally interconnected elements having workpiece engaging members and a pair of handles each operatively connected to a respective one of the pivotally interconnected elements, and a toggle-link operatively connected between the handles. Furthermore, the workpiece engaging members may be configured to have a cutting surface, configured as straight blades or as curved cutting surfaces.Type: GrantFiled: May 9, 2000Date of Patent: December 25, 2001Inventor: Alberto G. Domenge
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Patent number: 6293019Abstract: A cable cutting device having one handle of the cutter placed parallel and closely adjacent to the cable which is to undergo cutting. When a cable is about to be cut, the cable and the handle of the cutter are placed in a side by side relationship and both the cable and handle of the cutter are grasped by the user. The remaining handle is attached to a ratchet mechanism in the cutter and is oscillated to drive the cutter by means of a ratchet device to cut the cable which is still being grasped by the user. Now, the severed cable may be suitably disposed of in a controlled and safe manner. If the user is a utility lineman, the safety associated with the above operation cannot be overemphasized.Type: GrantFiled: March 14, 2000Date of Patent: September 25, 2001Inventors: Robert Lee, Randall Vanlauwe
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Patent number: 6249977Abstract: Disclosed is a pair of scissors, more particularly a barber scissors, comprising two scissor halves (3 and 4) that are joined at an axis of rotation (2). Each half has a cutting blade (5 and 6) and a shank (7 and 8) with a grip. The grip of one of the scissor halves (3) has a T-shaped grip (9) with a web (13) that draws away from the shank (7), more or less perpendicularly, on the plane of the scissors and two opposite limbs (14 and 15) extending more or less in the longitudinal direction of the shank (7) on the end of the web (13) opposite to the shank (7). The T-shaped grip (9) can be dismounted (7) and can be displaced and fixed in the longitudinal direction of the shank of the first half (3). The grip of the other half (4) is fixed in the longitudinal direction of the shank (8).Type: GrantFiled: May 24, 2000Date of Patent: June 26, 2001Inventor: Heinz-Peter Knoop
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Patent number: 6185825Abstract: Cable and wire cutters of new design have an outside cutter member containing an arcuate cavity within which an inside cylinderical cutter member rotates about a common pivot axis so separate cutting slots in the outside and inside cutter members cross during the cutting operation within the circumference of the inside cutter thereby remarkably improving the mechanical advantage in these new cutters as compared to the prior art because cutting of the work piece occurs closer to the common pivot axis of the cutting slots than has been possible with prior known cable and wire cutters. A variety of specific embodiments of the new cutter design are disclosed.Type: GrantFiled: August 9, 1999Date of Patent: February 13, 2001Assignee: Knight's Armament CompanyInventor: Douglas D. Olson
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Patent number: 6112415Abstract: A hookbill wire cutter specially designed to cut wire mesh components features a pair of opposing handles connected to a pair of jaws. Each jaw features an arcuate blade having a flat cutting portion and a tapered portion. The jaws are pivotally joined to open and close when the handles are actuated so that the blade cutting portions overlap in a scissor-like fashion. One of the arcuate blades features a notched tip that engages a wire member perpendicular to the wire member being cut. As a result, the wire cutter may be quickly and easily positioned. The arcuate blades are dimensioned to substantially surround a wire member so that the wire member is sheared flush when the jaws of the wire cutter are closed. As a result, generally smooth and flat cut wire ends are produced.Type: GrantFiled: January 15, 1999Date of Patent: September 5, 2000Assignee: GS Metals Corp.Inventors: Steve Hagene, Terry McCrary, Donald Ohms
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Patent number: 6105257Abstract: The invention is an apparatus having opposed jaws remotely located at a distance from actuator for the jaws. In particular, the apparatus has opposed jaws supported rotatably with respect to the actuator for the jaws. More particularly, the apparatus is a cutting device having opposed jaws located remotely and rotatably with respect to the jaw actuator for lopping limbs.Type: GrantFiled: August 14, 1998Date of Patent: August 22, 2000Assignee: Fiskars Inc.Inventors: Alan Rutkowski, Bill Freimuth, Mark Schaefer, Darrell Wiatrowski
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Patent number: 6044564Abstract: A branch cutter tool (1) having two blades (11,12) that are movable in relation to each other, of which one blade (11) is rigidly connected with a housing (2) and the other blade (12) can be moved by an electric motor (5) via a threaded spindle (8), a threaded nut (21) arranged on the threaded spindle and a rod assembly connected to the threaded nut. The blade (11) has an extension (13) projecting into the housing (2) and the threaded spindle (8) is rotatably supported by means of a rolling bearing (31) which is fixed to the threaded spindle (8) and is axially supported in a recess (17) formed into the extension (13) such that the cutting forces taking place in a cutting operation are absorbed by the components involved so that the housing (2) is not subjected to stress by these forces. The tensile forces transferred to the threaded spindle (8) when the movable blade (12) is closed are applied to the extension (13) via the rolling bearing (31).Type: GrantFiled: April 14, 1997Date of Patent: April 4, 2000Assignee: J. Wagner GmbHInventor: Thomas Jeltsch
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Patent number: 6000307Abstract: A method of cutting is described, utilizing a specialized utility cutting tool. The tool has a fixed jaw, a movable handle, a blade, and a connecting link. The blade is inserted into a channel formed in the fixed jaw for stability, and is pivotally connected to that fixed jaw. The blade is connected to the connecting link which is connected at an opposite end to the movable handle, so that moving the movable handle toward a handle of the fixed jaw moves the blade. The connecting link provides a mechanical advantage to apply more force to an item to be cut than would be possible without the connecting link. An anvil is mounted in a channel formed in a substantially straight edge of the fixed jaw, and the sharp edge of the blade is moved toward that anvil as the handles of the fixed and movable handles are squeezed together.Type: GrantFiled: February 5, 1998Date of Patent: December 14, 1999Inventor: Robert Wayne Aamodt
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Patent number: 5771584Abstract: A shear device includes a hand grip and a handle pivotally coupled together. A bar has one end pivotally coupled to the handle. A cutter blade has a middle portion pivotally coupled to the hand grip and has a pin secured to one end. A lever has one end pivotally coupled to the hand grip at a pivot rod and has the other end pivotally coupled to the bar at a pivot pole and has a groove formed in the middle portion for slidably engaging with the pin. The pin is disposed between the pivot pole and the pivot rod for allowing the cutter blade to be rotated with less force.Type: GrantFiled: March 20, 1997Date of Patent: June 30, 1998Inventor: Meng Tun Wang
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Patent number: 5761815Abstract: A gardening shears is composed of a fixed jaw, a movable jaw fastened pivotally with the fixed jaw, a rocking arm fastened with the fixed jaw and provided with a locating slot, an actuating device linking the movable jaw with the rocking arm, and two handles fastened respectively with the movable jaw and the rocking arm.Type: GrantFiled: February 21, 1997Date of Patent: June 9, 1998Inventor: Yu-Tang Lin
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Patent number: 5709030Abstract: A garden shear includes a cutting blade formed on a lever. A plate is pivotally coupled to the lever and has a cutting blade for acting with that of the lever. The plate includes one or more engaging notches formed opposite to the cutting blade. A beam is pivotally coupled to the lever and can be moved toward and away from the lever. A hook is pivotally coupled to the beam for engaging with the plate and for moving the cutting blades away from each other. An arm is pivotally coupled to the beam and includes one end for engaging with the engaging notches and for allowing the cutting blades to be moved toward each other step by step.Type: GrantFiled: November 5, 1996Date of Patent: January 20, 1998Inventor: Meng Tun Wang
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Patent number: 5682679Abstract: A hand tool having a pair of pivotally connected blades connected to a cutting blade having an arcuate outer edge with teeth thereon and an anvil so that on movement of the handles toward each other, the blade rotates toward the anvil and the anvil moves toward the blade to cut an object located between the blade and anvil.Type: GrantFiled: May 30, 1995Date of Patent: November 4, 1997Inventor: Edward Dorma
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Patent number: 5551157Abstract: A tool handle assembly including a first handgrip to hold a pair of cutting blades, a second handgrip pivoted to the first handgrip and moved to operate the cutting blades, wherein the first handgrip comprises a longitudinal top side, two longitudinal rows of mounting holes bilaterally disposed on the longitudinal top side, two smoothly curved tail wings bilaterally disposed at one end, two projecting blocks inwardly projecting from the tail wings, a rectangular opening defined between the projecting blocks, a rectangular locating hole disposed behind the projecting blocks, and a cushion covered on the top side, the cushion having two longitudinal rows of mounting blocks bilaterally disposed at a bottom side thereof and respectively fitted into the rows of mounting holes, a longitudinal locating rib fitted into the rectangular opening between the projecting blocks, a plurality of transverse spring ribs raised from the bottom side between the rows mounting blocks and stopped against the top side of the first hType: GrantFiled: May 17, 1995Date of Patent: September 3, 1996Inventor: Chin-Sung Wu
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Patent number: 5511314Abstract: A pair of garden shears comprises a fixed jaw, a movable jaw, a rocking arm fastened pivotally with the fixed jaw, a connection rod pivoted with the rocking arm, and a fastening cover fastened at the open end thereof with the rocking arm and provided at the closed end thereof with a pin engageable at one end thereof with a tension spring by which a spindle of the connection rod is caused to move so as to be retained in the grooves of a toothed retainer of the movable jaw when the fixed jaw and the movable jaw work against each other to bring about a shearing action.Type: GrantFiled: June 16, 1995Date of Patent: April 30, 1996Inventor: Shoei-Shin Huang
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Patent number: 5502897Abstract: Improved scissors comprise a cutting assembly and a grip assembly, and a kinematic connection between said two assemblies, whereby said blade assembly is actuated for cutting action by applying pressure to said grip assembly.Type: GrantFiled: June 1, 1994Date of Patent: April 2, 1996Assignee: R.I.D. Rauch Industrial Design Ltd.Inventor: Joseph A. Rauch
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Patent number: 5483746Abstract: A hand operated slot-forming tool has an elongated nose portion having a mechanically advantaged dual edge cutting blade which is pivotally mounted over a slotted dual element anvil blade having shearing edges which work in opposition to the dual edges of the cutting blade in response to squeezing of handles on the tool which cause the cutting edges to close together in gradual shearing contact with stock to be slotted. The cutting blade can be placed in abutting contact with the right angled leg to produce a slot having one edge lying at the intersection of fight angle legs of a channel member. Uniform reproducible slots are produced.Type: GrantFiled: November 19, 1992Date of Patent: January 16, 1996Inventor: Gerald W. Beyers