Lever And Link Patents (Class 30/190)
  • Patent number: 10160032
    Abstract: A handheld loop former for beading wire is provided. The loop former comprises a cutting lever, a slotted forming platform, a forming lever, and two scissors links. The cutting lever has a combination shear blade/forming die at its distal end. The slotted forming platform has a medially located slot, a shearing ledger, and a forming stanchion. The forming lever has a second forming die at its distal end. The cutting lever, forming platform at the medially located slot, and forming lever are journaled together with a pivot pin. Each of the forming lever and the cutting lever is journaled to one of the scissors links. Both scissors links are journaled to the forming platform. The sheer blade/forming die passes closely to the shearing ledger and with the second forming die envelops the forming stanchion when the forming lever and cutting lever are urged together. The forming platform is drawn proximally.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: December 25, 2018
    Assignee: DPG USA INC.
    Inventors: Nikhil Gupta, John C. Olson, Ronald C. Farnum
  • Patent number: 9554522
    Abstract: For hand-operated garden shears, in particular tree-pruning shears, with a ratchet mechanism, a ratchet lever may be disposed between a hand lever and a scissor lever and the ratchet lever may engage in different latching positions according to the ratchet mechanism. A rotatable abutment surface may be provided on the hand lever and a mating bearing surface on the lever extension, or vice versa, which, at the end of an initial closing operation with the ratchet lever in a first ratchet position, may allow a continuation of the cutting operation as a direct cut without further use of the ratchet mechanism.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: January 31, 2017
    Assignee: HUSQVARNA AB
    Inventor: Bernhard Reh
  • Patent number: 9457414
    Abstract: A pliers for cutting workpieces, in particular workpieces made of metal, comprising at least one plier leg (1) and a pressure element (2), which are connected to each other by a rotation point (13), wherein the plier leg (1) forms a jaw (8) for receiving the workpiece. A cutting element (18) with a cutting mouth (19) is associated with the plier leg (1), wherein a bottom of the jaw (8) and a bottom of the cutting mouth (19) are arranged in the vicinity of a rotation point (29) about which the cutting element (18) is rotating in the plier leg (1).
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: October 4, 2016
    Inventor: Alexander Merz
  • Patent number: 9066473
    Abstract: Pruners and Toppers have dual mode operation in that the blade is closed with a single squeeze or with multiple squeezes and a rotatable selector selects the desired mode. The blade has a rocker arm with ratchet teeth formed in a window in the arm. The scissor handle has a radius arm which ends in a pawl which can engage the ratchet nearer the pivot axis of the blade or further from it.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: June 30, 2015
    Assignee: 2WP Internation Pty Ltd.
    Inventor: Walter Podlesny
  • Patent number: 8327549
    Abstract: A garden shears has a main cutting member, a minor cutting member, two applying arms, and two assembling members. The major and minor cutting members both have a first pivot aperture and an extended section. An end of each extended section is bent up to form an L-shaped pawl forming a first indentation; an arced limiting slot is adjacent to each first pivot, and a tool end is respectively formed at an opposite end of the major and minor cutting members. Each applying arm has a handle and an assembling portion, each assembling portion having a second pivot aperture and a second indentation. A top edge of each second indentation has driving teeth that respectively engage with the L-shaped pawls of the major and minor cutting members. Each assembling member has a third pivot aperture and two fourth pivot apertures corresponding to the first pivot apertures and the second pivot apertures.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: December 11, 2012
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 8266804
    Abstract: A garden shears includes a pressing member, a holding member, a cutting member and a ratchet. An aperture of the cutting member combines with an aperture of the pressing member for a pivot. The holding member and the ratchet are assembled together at an assembling portion of the pressing member, and teeth of the ratchet engage with a pawl of the cutting member such that the pressing member, the holding member and the ratchet have different pivot points. An opening between the blade and the anvil is smaller than an opening formed between the handle and the holding member. Since the opening formed between the handle and the holding member is larger than the cutting opening between the blade and the anvil, a stronger cutting torque is applied to increase the clipping strength derived from the anvil and the blade.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: September 18, 2012
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 8225513
    Abstract: A pair of gardening shears include a main cutter, a secondary cutter pivotally connected with the main cutter, a force arm pivotally connected with the main cutter and engaged with the secondary cutter to drive the secondary cutter to pivot relative to the main cutter, and a connecting plate mounted on the secondary cutter and the force arm. Thus, the secondary cutter and the force arm are sandwiched between the main cutter and the connecting plate so that the secondary cutter and the force arm are moved smoothly and stably by limit of the main cutter and the connecting plate so as to facilitate the user performing the pruning action.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: July 24, 2012
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 8166659
    Abstract: A garden shears has a first shear, a second shear, a separator, an engaging member and two joined pressing arms. A cutting portion of the first shear is offset from the handle portion, and central portion has a centrally positioned first pivot hole and a first eccentric pivot hole. A central portion of the second shear has a second pivot hole. A side of the second shear has a strip-shaped extending portion with an end bent towards the other side of the second shear and having an engaging gear rack, which defines an escape region. An arcuate limiting guide groove is disposed between the second pivot hole above the escape region. The engaging member has an arcuate engaging tip edge with a protrusion. The pressing arms are bi-leveled with a beveled connection and have a handle at a lower portion and a second eccentric pivot hole at an upper portion.
    Type: Grant
    Filed: November 29, 2009
    Date of Patent: May 1, 2012
    Assignee: Ho Cheng Garden Tools Co., Ltd.
    Inventor: Yao-Chung Huang
  • Patent number: 7886446
    Abstract: A pair of pipe cutting pincers includes a pincers body having a first handle and a second handle pivotally assembled together. The first handle has its front end pivotally combined with a pipe-cutting member disposed with a cutting blade and its rear end bent toward a second receiving groove to form a pivotally driven member. An elastic member positioned between the first and the second handle has one end hooked on the first handle and the other end hooked with the rear end of the pivotally driven member for pulling the pipe-cutting member to carry out reciprocating shifting. A pivotal actuating member is rotatably assembled in the second handle to resist against the lower end of the pivotally driven member. In using, the pivotally driven member is actuated by the elastic member to move and make the pivotal actuating member rotate and drive a cutting edge to cut off a pipe.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: February 15, 2011
    Inventor: Hsiu-Man Yu Chen
  • Patent number: 7328513
    Abstract: 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: Grant
    Filed: January 31, 2006
    Date of Patent: February 12, 2008
    Inventor: Chung Cheng Yang
  • Publication number: 20080016700
    Abstract: A cutting tool includes a first and second pivoted levers for opening and closing and a pair workpiece engagement members having one or more cutting edges. One of the workpiece engagement members is pivotably attached to the fist and second members, while the other workpiece engagement member is fixedly attached to the second lever. The levers connected together by a linkage having one end fixed in position the first lever and having another end slideably attached to the second lever by of a slide element. An adjustment device is connected to the side element and to a rotatable handle on the first handle. The adjustment device moves and holds the slide element in a plurality of positions which correspond to different cutting ratios. An associated method of use is also disclosed in which the rotatable handle is used to adjust the cutting ratio while the tool is engaged with a workpiece.
    Type: Application
    Filed: July 18, 2006
    Publication date: January 24, 2008
    Inventors: Hector R. Hernandez, George Hillinger
  • Patent number: 7047853
    Abstract: 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: Grant
    Filed: June 28, 2004
    Date of Patent: May 23, 2006
    Inventor: Donald J. Brockhage
  • Patent number: 6772520
    Abstract: 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: Grant
    Filed: September 29, 2003
    Date of Patent: August 10, 2004
    Inventor: Cheng-Hsiung Shih
  • Patent number: 6513248
    Abstract: 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: Grant
    Filed: December 20, 2000
    Date of Patent: February 4, 2003
    Assignee: Fiskars Consumer Oy Ab
    Inventors: Olavi Linden, Markus Paloheimo
  • Publication number: 20020038593
    Abstract: An optical fiber cutting device provided with a speed reducing part which transmits drive force by reducing the drive speed of the external drive force, a drive force transmission part which transmits the drive force from the speed reduction part to the cutting blade holder, a cutting blade holder, a cutting blade which is held by the cutting blade holder and moves to the cutting position along with said cutting blade holder, and an optical fiber supporter which supports the optical fiber so as to be perpendicular to said cutting blade at the cutting position.
    Type: Application
    Filed: September 25, 1998
    Publication date: April 4, 2002
    Inventors: RYUICHI ISHIKAWA, KYOSUKE HARADA, TAICHI MASUDA
  • Patent number: 6332274
    Abstract: 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: Grant
    Filed: May 9, 2000
    Date of Patent: December 25, 2001
    Inventor: Alberto G. Domenge
  • Patent number: 6314647
    Abstract: Finger-actuated device for cutting slender articles at a distance, including a first end including an anvil and a cutting edge articulated about a common axis and arranged to temporarily accept a slender article therebetween, a second end including a handle and a finger-actuated trigger, an elongated rigid shaft holding the first end remote to the second end and, means actuated by the finger-actuated trigger along the shaft to cause the cutting edge to pivot forcibly into contact with the anvil.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: November 13, 2001
    Assignee: Arcoa Industries
    Inventor: Joe Bryant Coxsey
  • Patent number: 6098291
    Abstract: A pipe cutter includes a first handle and a second handle with a pivotable blade connected thereto which has teeth defined in a lateral side thereof. The second handle has a fixed jaw extending laterally therefrom to which the first handle is pivotally connected. A control member is pivotally connected to the first handle and has an initial pawl extend therefrom so as to engage with the teeth when the blade is not pivoted relative to the fixed jaw. The distal end of the control member has a pawls so as to engage with the teeth when the blade is pivoted toward the fixed jaw. A link mechanism is connected between the blade and the second handle so that when pushing the link mechanism by a cam device extending from the first handle, the blade is pivoted toward the fixed jaw to position a pipe to be cut between the fixed jaw and the blade.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: August 8, 2000
    Inventor: Chung-Hung Wang
  • Patent number: 6000307
    Abstract: 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: Grant
    Filed: February 5, 1998
    Date of Patent: December 14, 1999
    Inventor: Robert Wayne Aamodt
  • Patent number: 5771584
    Abstract: 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: Grant
    Filed: March 20, 1997
    Date of Patent: June 30, 1998
    Inventor: Meng Tun Wang
  • Patent number: 5761815
    Abstract: 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: Grant
    Filed: February 21, 1997
    Date of Patent: June 9, 1998
    Inventor: Yu-Tang Lin
  • Patent number: 5615541
    Abstract: A weeder which a user can use in a standing posture, comprises an operating shaft having a longitudinal bore and a grip provided at an upper end thereof, the operating shaft having a length long enough to allow the user to operate the operating shaft in the standing posture while grasping the grip, a support rod telescoped in the longitudinal bore of the operating shaft, a chuck mechanism arranged at a lower end portion of the shaft for pulling out the weeds by the roots, the chuck mechanism including a pair of first and second frames and a pair of first and second chuck pawls for pinching the roots of the weeds, the first frame supported to a lower end portion of the rod, the second frame pivotally supported to the first frame, the first chuck pawl provided at a lower end of the first frame, the second chuck pawl provided at a lower end of the second frame, each of the first and second chuck pawls having a lower sharp end and adapted to be stuck into the ground when the shaft is pushed down against the groun
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: April 1, 1997
    Assignee: Ota Kosan Corporation
    Inventor: Kinjiro Ota
  • Patent number: 5566453
    Abstract: A pair of shears comprises a driving blade, a follower blade and a pair of grips. The tang of the follower blade connects the front end of a grip. The rear end of the driving blade connects a link which connects the driving grip. The middle portion of the zigzag follower blade connects the driving blade. A curved fang is in the front portion of the follower blade. A clip seat is connected to the curved fang. Two rows of holding serrations are disposed on the surface of the clip side of the clip seat. The clip edge of the clip seat has an inner flange with two notches. An outer flange is disposed at the outer edge of the clip seat. The outer flange and the inner flange 341 define an upper recess on the upper surface of the clip seat. The upper recess receives the curved fang.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: October 22, 1996
    Inventor: Ching-Shui Lin
  • Patent number: 5469625
    Abstract: A hand pruner including a first handle and a second handle pivotally connected to said first handle, a first cutting blade secured to said second handle, a second cutting blade pivotally connected to said second handle for movement into engagement with said first cutting blade and a link connecting said second blade to said first handle whereby said second blade is pivoted into engagement with said first blade when said first handle is pivoted into engagement with said second handle, the cutting blades being laterally offset to provide a scissors cut and are convertible to an anvil cutting blade by mounting an anvil plate on the second cutting blade.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: November 28, 1995
    Assignee: Fiskars Inc.
    Inventors: Craig H. Melter, Robert T. Schofield
  • Patent number: 5245755
    Abstract: A force-multiplying device includes a base or stationary structure and three levers all pivotally mounted on the base and each having a force input end and a force output end and being arranged in a folded configuration such that each lever extends from the force input and to the force output end thereof in a direction generally opposite to that of adjacent levers in the series. The pivot point of each lever is closer to its force output end than to its force input end so that the force delivered at the output end is greater than that applied at the input end. The base and the output lever may operate as a pair of opposed jaws, each carrying a removable force application device for different applications such as cutting, crimping, punching, lifting and spreading. The input lever and the base structure may be configured as handles of a hand-operated tool and the levers may be arranged to either open or close the jaws in response to movement of the handles together.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: September 21, 1993
    Assignee: Snap-on Tools Corporation
    Inventor: Bert Krivec
  • Patent number: 4891883
    Abstract: The invention relates to a pair of surgical pliers for the cutting through of wires (14), screws or the like comprising a cutter gripping lever (1) having a cutting edge (15) at its front end and a handle (13) at its rear end, and a cutting lever (2) pivotally connected to the cutter gripping lever by means of a cutting lever hinge (3) with the cutting lever having a second cutting edge (15') disposed opposite to the first cutting edge (15). A gripping lever (4) is also pivotally connected to the cutter gripping lever (1). A transmission is arranged between the gripping lever (4) and the cutting lever (2). The input drive member (6) of the transmission braced against the cutter gripping lever (1) is loaded by the gripping lever whereas the output drive member (11) of the transmission acts on the cutting lever (2) at the side remote from the cutting edge (15) of the cutting lever hinge (3) which connects the cutting lever (2) to the cutter gripping lever (1).
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: January 9, 1990
    Assignee: Delma elektro- und medizinische Apparatebau GmbH
    Inventor: Erwin Mantele
  • Patent number: 4462403
    Abstract: An instrument for holding and chipping a bond has a pair of elongated curved handles spaced apart at one end, and pivotally connected at other ends to ends of flat elongated jaws. Central portions of the jaws are pivotally connected together. Outer ends of the jaws and handles normally flare outwardly and are held by outwardly biased leaf springs secured to the handles. The handles pivot on a free floating disk disposed in slots formed in facting edges of the handles. The outer ends of the jaws are formed with interfitting teeth and recessed having side walls formed with sharp cutting edges.
    Type: Grant
    Filed: January 21, 1983
    Date of Patent: July 31, 1984
    Assignee: Vernitron Corporation
    Inventor: Werner Martin
  • Patent number: 4346518
    Abstract: A pair of elongated levers are pivotally interconnected at a first pair of corresponding ends for relative oscillation and one of the first ends of the levers includes a lateral projection having a flattened terminus on its free end defining an abutment surface facing toward the opposite end of the corresponding lever. The terminus is provided with a slot therein including an open end opening outwardly of one peripheral portion of the terminus and a closed end generally centered relative to the plan area of the abutment surface. The lever not equipped with the lateral projection includes a laterally projecting bifurcated arm on its first end pivotally attached at its free end to a mounting lug on the first end of the other lever.
    Type: Grant
    Filed: November 21, 1980
    Date of Patent: August 31, 1982
    Inventor: David A. Wood
  • Patent number: 4277887
    Abstract: A device for transversely shearing a conduit including a first handle having a recessed conduit-receiving jaw at one end thereof, a shearing blade pivotally mounted on said first handle at the location for pivoting toward and away from said jaw, and including a plurality of ratchet teeth along one edge thereof, and a second handle pivotally connected to said jaw. An elongated toothed pawl bar having an elongated slot near one end thereof, and having pawl teeth at the other end thereof, is pivotally secured by a pivot pin extending through said slot to said second handle at a point spaced from its point of pivotal connection to said jaw. A cam stud secured to said first handle bears against one side edge of said pawl bar opposite the edge upon which the pawl teeth are located, and functions, when the handles are pivoted toward each other, to cam said pawl bar to a location at which said pawl teeth engage said ratchet teeth.
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: July 14, 1981
    Assignee: Indian Head Inc.
    Inventor: Robert R. Rady
  • Patent number: RE30613
    Abstract: A shearing tool for synthetic resin tubes, in which a lower jaw is connected to the leading end of an upper handle portion, a lower handle portion is pivoted to said lower jaw at its leading end, an opening is provided in forward portion of said upper handle portion extending therefrom to the leading end of said lower jaw, an arcuate tube receiving recess is provided in the upper surface of said lower jaw, said shearing blade is pivoted in an intermediate position of the length to said upper handle portion within said opening, said shearing blade is provided at the rear and lower end with an engaging pawl, a rocking bar having notches in the upper surface is pivoted at one end to the leading end of a lower handle portion, a slot is provided in the rear portion of said shearing blade, a connection link has at one end a pin freely received within said slot and is pivoted at the other end to an intermediate position of the length of said rocking bar, a spring is provided for urging said rocking bar against said
    Type: Grant
    Filed: April 6, 1979
    Date of Patent: May 19, 1981
    Assignee: Matsuzaka Iron Works, Inc.
    Inventors: Masahiko Nakamura, Hidehiko Itou