With Toggle Release Patents (Class 81/368)
  • Patent number: 10702976
    Abstract: Presented here is a pole clamp that can be operated by a single hand, and which can clamp onto objects of various sizes and shapes. The clamp can be operated using a handle which, when pushed in an opening direction opposite a base member, opens the jaws on the clamp. The motion of the handle can adjust the opening of the jaws. In addition, the opening of the jaws can be adjusted using a thumb dial which can shorten and lengthen a locking member, which in turn adjusts the opening of the jaws. The clamp can lock onto the object when the handle is pushed in a direction opposite the opening direction, past the dead center point, and the locking member prevents further movement of the handle.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: July 7, 2020
    Assignee: GCX Corporation
    Inventors: Carl Hermann Poppe, Ronald Jesse Caywood
  • Patent number: 10562156
    Abstract: Embodiments disclosed herein provide an ergonomic quick release mechanism for hand-held clamping toggle lock tools where a fixed jaw and handle have another jaw movably attached. A moving handle assembly comprises a front handle section and a rear handle section held rigid to one another by a movable release trigger mounted on one of the two sections engaging a catch on the other section. The front handle section connects to the movable jaw and a toggle link. Squeezing the moving handle causes the jaws to close and a toggle pivot to go past toggle over center, locking the jaws. To unlock them, the release trigger is disengaged and the rear handle section is then squeezed causing it to rotate and contact an element of the fixed handle assembly at a release fulcrum point, causing the front handle section to rotate outward, releasing the toggle lock.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: February 18, 2020
    Assignee: RED DOG TOOL WORKS, LLC
    Inventor: David Levinson
  • Patent number: 10391614
    Abstract: A locking pliers preferably includes a fixed jaw, a moveable jaw, a fixed handle, an adjusting screw, a toggle link, at least one power link, a curved link and a moveable handle. The fixed jaw is retained in a first end of the fixed handle. The moveable jaw is pivotally retained in the first end of the fixed handle. An adjustment screw is retained in a second end of the fixed handle. An end of the adjustment screw engages a first end of the toggle link. The moveable handle is pivotally engaged with the toggle link and a first end of the curved link. A first end of the power link is pivotally engaged with a second end of the toggle link. A second end of the curved link is pivotally engaged with the power link. The moveable jaw is pivotally engaged with a second end of the power link.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: August 27, 2019
    Inventor: Robert L. Aldredge
  • Patent number: 9216494
    Abstract: A pincer structure includes a first body having an immovable palate and an immovable stem, a second body having a movable palate and a movable stem, a clipping space defined by the movable palate and the immovable palate, the movable stem pivoted on the movable palate, an elastomer elastically connected between the movable palate and the immovable stem, a limiting member extruded from the movable stem, the limiting member having an abutting unit, a pivoting member pivoted on the movable stem, the pivoting member having an abutting portion, the abutting portion being movable between the movable stem and the abutting unit, a connecting member having one end and another end, said one end pivotally assembled to the pivoting member and said another end movably assembled to the immovable stem. Therefore, a recovery force of the elastomer makes the operation smooth.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: December 22, 2015
    Inventor: Chiu-Chi Lai
  • Patent number: 8919229
    Abstract: A one handed quick release locking pliers preferably includes a fixed jaw, a movable jaw, a fixed handle, a toggle link, a power link and a movable handle. The fixed jaw is retained in one end of the fixed. The movable jaw is pivotally retained in the one end of the fixed handle. A toggle link release surface extends from the second end of the toggle link. A toggle link stop projection extends outward from the actuation portion. The toggle link stop projection provides an over-center stop for clamping an object. A power link release projection extends outward from the movable handle, substantially perpendicular to the toggle link stop projection. The power link release projection contacts the power link. Moving a second end of the movable handle away from the fixed handle will cause the power link release projection to push the power link and release a clamped object.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: December 30, 2014
    Inventors: Robert L. Aldredge, Daniel J Schaefer
  • Patent number: 8656813
    Abstract: A locking pliers preferably includes a fixed jaw, a movable jaw, a fixed handle, an adjusting screw, a biasing spring, a toggle link, a power triangle link, at least one tie link and a movable handle. The fixed jaw, the movable jaw, the fixed handle, the adjusting screw and the biasing spring are preferably taken from an Irwin item no. 502L3 vise grips, but other parts may also be used. A second embodiment of the locking pliers preferably includes a fixed jaw, a movable jaw, a fixed handle, an adjusting screw, a biasing spring, a toggle link, two power links, at least one tie link, a release link and a movable handle. The fixed jaw, the movable jaw, the fixed handle, the adjusting screw and the biasing spring are preferably taken from an Irwin item no. 502L3 vise grips.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: February 25, 2014
    Inventors: Robert L. Aldredge, Michael Bogart, Daniel J Schaefer, David P. Engvall
  • Patent number: 8555753
    Abstract: A strap wrench includes a strap that is a continuous loop and has notches. No portion of the strap is affixed to any portion of the wrench. The strap is placed around an object that needs to be turned such as an oil filter on an engine. A tension mechanism is then used to tighten the strap into place around the object to be turned. A ratchet mechanism engages one or more notches on the strap to prevent movement of the strap in one direction while allowing movement of the strap in the opposite direction. The combination of the notched continuous loop strap and ratchet mechanism allow the strap wrench to have a ratcheting action after the strap is tightened into place around the object to be turned.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: October 15, 2013
    Inventor: David E. Price
  • Patent number: 8534168
    Abstract: A pliers is adjustable between at least two distinct selectable size ranges. A movable pivot pin is held stable in a selected recess of a slot in both loaded and unloaded conditions. A lower jaw is adjustable between a small and a large size range. A multifunction spring is movably attached to a body to both firmly bias a lower jaw and handle to an open position and to retain the pin in a constant selected pivot position of the body for normally used conditions. The pliers include a familiar function and compact shape without additional bulk from the structures of the improved features. Only a simple wire form is required to provide the improvement of the invention in a preferred locking pliers embodiment.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: September 17, 2013
    Inventors: Joel S. Marks, Paul Janson
  • Patent number: 8225700
    Abstract: A jaw release mechanism for locking pliers which utilize an over-center toggle locking mechanism and wherein the normally stationary upper jaw of the pliers is pivotally fastened to the main body of the pliers. This normally stationary upper jaw is releaseably retained in a normally stationary position relative to the main body of the pliers by a thumb actuated trigger release mechanism whereby the locked pliers may be safely released with the same hand which grasps and manipulates the pliers.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: July 24, 2012
    Inventor: Jeffrey B. Hile
  • Patent number: 8024998
    Abstract: Locking pliers for being one-handed adjustable, clampable, and releasable. The locking pliers includes a fixed portion, a movable portion, a first apparatus for moving the movable portion relative to the fixed portion a desired amount in order to clamp a workpiece using only one hand, and a second apparatus for releasing the movable portion from the fixed portion in order to release the workpiece using only the one hand. The movable portion is movably connected to the fixed portion. The first apparatus is operatively connected to the fixed portion. The second apparatus is operatively connected to the movable portion.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: September 27, 2011
    Inventor: Pablo D. Valencia
  • Publication number: 20110067184
    Abstract: An improved locking pliers is provided with an attachment member having a threaded aperture fixed on the handle of the locking pliers. In one embodiment, the attachment member is in the form of a coupling nut or other extended wide nut welded to the handle. In another embodiment, the attachment member is integrally formed as part of the handle during the manufacture of the pliers. In another embodiment, the attachment member is concentrically attached to the end of the handle so that a pulling, pushing or twisting force is applied along the plane of the handle without torque. The attachment member does not interfere with the normal locking operation or any other normal operation of the pliers. In another embodiment, a quick connection attachment member, such as a locking pin or quick disconnect joint, is used in place of a threaded portion.
    Type: Application
    Filed: November 24, 2010
    Publication date: March 24, 2011
    Inventor: Thomas M. Robert
  • Patent number: 7793570
    Abstract: A hand tool having first and second plier units attached to one another where a jaw region is operatively configured to have a work piece to be placed therein and a handle region is configured to be used by the user of the tool to grasp the work piece. A tension member is provided to be positioned past a dead point axis so as to apply a clamping force upon the jaw member and the hand tool maintains a grip upon the work piece without continuous interaction with the user of the tool.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: September 14, 2010
    Assignee: Brigham Young University
    Inventors: Christopher Andrew Mattson, Brian G. Winder, Allen Boyd Mackay, Joseph O. Jacobsen, Peter A. Halverson, Spencer Frazer
  • Patent number: 7509895
    Abstract: The self-adjusting locking pliers include a body having a fixed jaw supported at one end. A moveable jaw is pivotably supported on the body at a slidable pivot connection. A linkage transmits a force applied to the handles of the pliers to the jaws and locks the jaws in the clamping position. The linkage allows the angle between the links to be preset to thereby control the clamping force applied to the work piece. The movable jaw is selectively attached to the linkage in one of two positions such that the jaw span may be adjusted without affecting the geometry of the linkage.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: March 31, 2009
    Assignee: Irwin Industrial Tool Company
    Inventors: David P. Engvall, Thomas M. Chervenak
  • Publication number: 20080236344
    Abstract: A multipurpose self-adjusting locking pliers and claw hammer combination is disclosed that includes a self-adjusting locking pliers unit including an upper jaw, a pivotal lower jaw, a stationary handle having a rear adjustment member, and a pivotal trigger handle having a release lever; and a hammer unit including a head downwardly projecting from the lower jaw and a claw upwardly rearward projecting from the upper jaw.
    Type: Application
    Filed: March 26, 2007
    Publication date: October 2, 2008
    Inventor: Wen-yueh Chiang
  • Publication number: 20080216615
    Abstract: This invention is to propose an improved structure of pliers that can clip objects of various shapes easily and tightly. It comprises: a recessed main body that mounts, in one side, with a fixed pliers jaw and a movable pliers jaw, and collaborates with an adjusting screw in the other side. The movable pliers jaw is also, in another end, mounted with a pressing lever that also mounts with an elbow device and a releasing lever. Further, a spring is set between the main body and movable pliers jaw. The improved feature of this invention is that both the fixed and movable pliers jaws have toothed faces in their front ends that can engage firmly with each other, and form a proper-sized room to clip working objects of various shapes firmly and tightly, and also, the toothed faces of both jaws can used to clip string-shaped objects to perform tasks as necessary.
    Type: Application
    Filed: March 19, 2007
    Publication date: September 11, 2008
    Inventor: Ming-Chieh Wu
  • Publication number: 20080098861
    Abstract: The self-adjusting locking pliers include a body having a fixed jaw supported at one end. A moveable jaw is pivotably supported on the body at a slidable pivot connection. A linkage transmits a force applied to the handles of the pliers to the jaws and locks the jaws in the clamping position. The linkage allows the angle between the links to be preset to thereby control the clamping force applied to the work piece. The movable jaw is selectively attached to the linkage in one of two positions such that the jaw span may be adjusted without affecting the geometry of the linkage.
    Type: Application
    Filed: October 25, 2006
    Publication date: May 1, 2008
    Inventors: David P. Engvall, Thomas M. Chervenak
  • Publication number: 20070209484
    Abstract: The locking pliers comprise a first handle connected to a fixed jaw. A second handle and second jaw are pivotable relative to the first handle and first jaw such that relative movement of the handles causes the jaws to open and close. A toggle-locking mechanism locks the jaws in the closed position. An adjustment screw is provided to vary the effective length of the toggle locking mechanism to control the distance between the jaws in the closed position and to thereby control the force applied by the jaws. The adjustment screw comprises a head that has a knurled outer periphery that can be manually manipulated. A socket is formed in the transverse face of the screw head that is disposed along the longitudinal rotational axis of the screw. The socket has an internal configuration that receives a torque applying tool.
    Type: Application
    Filed: March 13, 2006
    Publication date: September 13, 2007
    Inventors: Thomas M. Chervenak, Brett Lucus
  • Publication number: 20070180957
    Abstract: A toggle locking tool is provided with an adjustment screw assembly comprising a force-enhancing shank that enables the holding force of the tool to be multiplied manifold. The adjustment screw assembly comprises an adjustment screw conventionally adapted to be fed into and to engage a threaded bore in the outer end of the fixed handle of the tool; however said adjustment screw itself comprises an internal, fine-threaded bore that extends through the length of said screw, and that receives a threaded force-enhancing shank having a head portion adapted for turning manually or with a turning tool. An end portion of said shank extends beyond the adjustment screw to form the bearing surface which, in a conventional toggle locking tool, is provided by the tip of the adjustment screw. Rotation of the adjustment screw provides rapid, low-force locking adjustment of the tool, and subsequent torquing of the force-enhancing shank results in the application of a multiplied locking force to the jaws of the tool.
    Type: Application
    Filed: February 8, 2007
    Publication date: August 9, 2007
    Inventor: Allen Johnson
  • Patent number: 7252023
    Abstract: An improved chain locking pliers being of the type having a fixed handle, a movable handle, a fixed jaw affixed to the fixed handle for movement therewith, a movable jaw pivotally mounted to both the movable handle and the fixed handle, and apparatus for holding a chain and being associated with detents in both the fixed jaw and the movable jaw, respectively. The improvement includes the apparatus detachably lockingly capturing the chain to the fixed jaw.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: August 7, 2007
    Inventors: Christopher Bruce Perry, James Christopher Rogerson
  • Patent number: 7249542
    Abstract: A self-adjusting variable grip locking plier for gripping a workpiece. The plier includes a body, a handle, and a wedge. The plier is designed for extremely fast set up and for easily gripping and holding the workpiece with one hand with absolutely no adjustments ever to make, and provides a larger than ordinary jaw capacity in a very compact design. The plier grips and holds the workpiece with a light or tremendous gripping force with no adjustments ever to make, and with an extremely fast unlocking system, while at the same time fitting into the palm of one hand. When the workpiece is grasped, one simply ratchets the handle until the desired grip is obtained. The more times one squeezes the handle the tighter the grip. This automatically locks the plier at the desired grip. To release the plier one simply pushes the wedge back into the body with the palm of one hand.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: July 31, 2007
    Inventor: Stanley L. McNatt
  • Patent number: 7216570
    Abstract: A self-adjusting pliers is operable to grasp a workpiece between an upper jaw and a lower jaw. The pliers includes an upper arm having a first end and a second end, with the upper jaw at the first end. A jaw arm has a first end and a second end. The second end of the jaw arm is pivotably connected to the upper arm at a main pivot adjacent to the second end of the upper arm, so that the first end of the jaw arm is movable in a circular arc relative to the main pivot. The lower jaw is at the first end of the jaw arm in movable facing relation to the upper jaw so that the workpiece may be grasped between the upper jaw and the lower jaw. An engagement mechanism releasably engages the jaw arm to the upper arm at an engagement position responsive to a movement of the jaw arm relative to the upper arm and responsive to a size of the workpiece grasped between the upper jaw and the lower jaw, to thereby prevent rotation of the jaw arm relative to the upper arm.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: May 15, 2007
    Assignee: I.D.L. Tech Tools, LLC
    Inventors: Brett P. Seber, Eric B. Carmichael
  • Patent number: 7146887
    Abstract: An automatically adjustable locking pliers includes an upper jaw fixed to a handle and lower jaws that pivot about the handle. The lower jaws are connected to a lower tightening handle. A lever connects the tightening handle and upper body. This is the standard structure of locking pliers well known in the industry. The improvement includes a self-adjusting sizing and locking mechanism A thumb jaw sizing lever is located near the jaws and may be moved to open the jaws so that they can be sized around a workpiece. When the thumb jaw lever is released, the jaws automatically size and clamp lightly around the workpiece. The sizing lever and locking mechanism operate together to automatically size and lock the pliers. An adjusting screw in the lower handle near a pivot point sets the clamping force. Turning the screw adjusts the tension of the pliers for gripping the workpiece.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: December 12, 2006
    Inventor: Robert Evan Hunter
  • Patent number: 7143671
    Abstract: Disclosed is a lever-wrench pliers, which includes a fixed jaw tip that define a mouth and has three clamping faces around the mouth, and a movable jaw that has a jaw tip with a toothed clamping face facing the middle one of the three clamping faces of the fixed jaw tip.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: December 5, 2006
    Inventor: Chiu-Wen Lai
  • Patent number: 7134365
    Abstract: A self-adjusting locking plier having a stationary assembly providing a stationary handle and a stationary jaw and a moveable assembly including an operating lever and a moveable jaw that is supported on the stationary jaw with a slidable pivot connection whereby the moveable jaw is permitted to automatically close down on an object disposed between the jaws for providing self-adjustment for different sized objects to be gripped between the jaws. The operating lever is spring biased to move away from the stationary handle. In addition, a dual link past-dead-center toggle locking mechanism is provided to lock the pliers on to an object gripped between the jaws. The specific arrangement of the locking toggle mechanism in combination with the moveable operating lever to which it is connected in further combination with the fact that the front end of the lever mechanism is connected with a slidable pivot to the stationary jaw provides a self-adjusting locking plier.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: November 14, 2006
    Inventor: Jeffrey B. Hile
  • Patent number: 6978704
    Abstract: Locking pliers include a stationary front jaw, a stationary handle, a movable front jaw, a movable handle, an adjusting screw rod, and a locking lever. The movable front jaw is moved toward the stationary front jaw to clamp an object therebetween when the movable handle and the stationary handle are forcefully brought together by an external force applied thereto. A releasing lever for unlocking the movable front jaw and the stationary front jaw has a flex wall body with a substantially flat central portion and two opposite curved side portions flaring curvedly and upwardly from the flat central portion. The flat central portion has a width larger than the diameter of the adjusting screw rod.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: December 27, 2005
    Inventor: Hsiao-Yun Chen Cheng
  • Patent number: 6966243
    Abstract: A universal plier structure is disclosed. The plier includes a plier body having an adjustable handle and a fixed handle, a suspension seat, an opening-adjusting knob, and a pad. The fixed handle has a bottom end having a first screw hole. The suspension seat has an end provided with a through hole. The opening-adjusting knob includes a screw rod and a knob head, the knob head being fitted in the suspension seat and having a center provided with a second screw hole, the screw rod having a first end engaged with the first screw hole of the fixed handle and a second end passing through the through hole of the suspension seat to engage the second screw hole of the opening-adjusting knob. The screw rod is welded to the knob head. The pad mounted between the knob head and the suspension seat.
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: November 22, 2005
    Inventor: Wan-Yi Liao
  • Patent number: 6941844
    Abstract: A self-adjusting locking plier having a stationary assembly providing a stationary handle and a stationary jaw and a moveable assembly including an operating lever and a moveable jaw that is supported on the stationary jaw with a slidable pivot connection whereby the moveable jaw is permitted to automatically close down on an object disposed between the jaws for providing self-adjustment for different sized objects to be gripped between the jaws. The operating lever is spring biased to move away from the stationary handle. In addition, a dual link past-dead-center toggle locking mechanism is provided to lock the pliers on to an object gripped between the jaws. The specific arrangement of the locking toggle mechanism in combination with the moveable operating lever to which it is connected in further combination with the fact that the front end of the lever mechanism is connected with a slidable pivot to the stationary jaw provides a self-adjusting locking plier.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: September 13, 2005
    Inventor: Jeffrey B. Hile
  • Patent number: 6857342
    Abstract: A pair of locking pliers includes a first jaw, a first handle, a second jaw, a second handle, a toggle, an adjusting screw, a release lever, a spring, and a soft jacket. The first handle extends from the first jaw and includes a space defined therein. The second jaw is pivotally connected with the first jaw. The second handle is pivotally connected with the second jaw. The toggle includes a first end pivotally connected with the second handle and a second end inserted into the space of the first handle. The adjusting screw includes an end driven into the space of the first handle for abutment against the second end of the toggle. The release lever is pivotally connected with the second handle. The release lever includes a first end for abutment against the toggle and a second end to be pressed by a user. The spring includes an end secured to the first handle and an opposite end secured to the second jaw. The soft jacket wraps up the second handle and the release lever.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: February 22, 2005
    Inventor: Chao-Chi Wang
  • Patent number: 6748829
    Abstract: A self-adjusting pliers is operable to grasp a workpiece between an upper jaw and a lower jaw. The pliers includes an upper arm having the upper jaw and a lower arm, with the lower jaw linked to the lower arm but not integral with the lower arm. A control arm has a first end and a second end. The first end of the control arm has a first pivotable connection to the upper arm adjacent to an end of the upper arm remote from the upper jaw, and the second end of the control arm has a second pivotable connection to the lower arm at an intermediate location along the length of the lower arm. An upper control arm pivot pin provides the pivotable connection between the first end of the control arm and the upper arm, and a spring biases the control arm so as to resist rotation of the control arm about the upper control arm pivot pin. A support extends downwardly from the upper arm toward the lower arm and has a guide thereon.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: June 15, 2004
    Inventors: Brett P. Seber, Eric B. Carmichael
  • Publication number: 20040103766
    Abstract: A pair of locking pliers includes a first jaw, a first handle, a second jaw, a second handle, a toggle, an adjusting screw, a release lever, a spring, and a soft jacket. The first handle extends from the first jaw and includes a space defined therein. The second jaw is pivotally connected with the first jaw. The second handle is pivotally connected with the second jaw. The toggle includes a first end pivotally connected with the second handle and a second end inserted into the space of the first handle. The adjusting screw includes an end driven into the space of the first handle for abutment against the second end of the toggle. The release lever is pivotally connected with the second handle. The release lever includes a first end for abutment against the toggle and a second end to be pressed by a user. The spring includes an end secured to the first handle and an opposite end secured to the second jaw. The soft jacket wraps up the second handle and the release lever.
    Type: Application
    Filed: May 22, 2003
    Publication date: June 3, 2004
    Inventor: Chao-Chi Wang
  • Patent number: 6601838
    Abstract: A clamp or locking pliers of this invention are intended for positioning aligning a first wooden framing member transversely relative to a second wooden framing member prior to attachment of the first wooden framing member to the second wooden framing member. The clamp includes a first gripping jaw and a second gripping jaw. The first and second jaws are shiftable toward each other to grip the first wooden member. A crossbar extends transversely, preferably at right angles, relative to the first and second gripping jaws for supporting the first wooden framing member on the second wooden framing member and for mutually aligning the two members so that they can be nailed together. A safety guard on the locking pliers includes a bail that can be rotated to prevent release of a locking pliers release clip so that the pliers can be used to hoist a wooden framing member.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: August 5, 2003
    Inventor: Michael Reece Gilley
  • Patent number: 6578452
    Abstract: A vise grip locking tool which contains jaws that are capable of opening with a flick of the user's wrist. The tool comprises a first handle member, a second handle member, a lower jaw, and an upper jaw. The first handle member is pivotally attached to the lower jaw. The first end of the lower jaw is made up of four mutually interconnected sides having a guided slot extending through it. The upper jaw has an elongated shank that may slide along the guided slot of the lower jaw. A stop is present on the bottom of the shank preventing the upper jaw from escaping the guided slot. The second handle member is pivotally mounted to the lower jaw and includes a releasable lock which is made up of a spring-operated detent which engages teeth on the elongated shank.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: June 17, 2003
    Inventor: Thomas F. Duffy
  • Publication number: 20020121165
    Abstract: A vise lock tool comprises a first and second handle member, both of which are pivotally mounted to the lower jaw member. The upper jaw member has an elongated shank with a continuous plurality of teeth present on the posterior side and is slidingly mounted in a guide slot. Attached to the second handle member is a releasable locking means which locks the upper jaw with respect to the lower jaw and allows a flick of the wrist to open or close the upper jaw due to a spring-operated detent means for engaging the teeth on the elongated shank of the upper jaw member.
    Type: Application
    Filed: January 14, 2002
    Publication date: September 5, 2002
    Inventor: Thomas F. Duffy
  • Patent number: 6227080
    Abstract: Locking grips (1) designed so that their latch lock mechanism (8) cannot travel beyond a point of alignment of its three points but locks, slightly set back with respect to this alignment, by the snap-fastening of a relief (30) of a catch (28) borne by a lever (10) behind a tooth (19) of a front end of a link (13). The catch (28) forms a trigger (28A) which allows the locking grips to be opened in a controlled way after the lever (10) has been released.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: May 8, 2001
    Assignee: Facom
    Inventors: Lucien Roger Grayo, Jean-Paul Zerkovitz
  • Patent number: 6095019
    Abstract: A locking plier tool, for clamping onto a workpiece of any size within the expanse of the tool's open jaws, has a thumb-actuated control member on the tool body and a release lever which facilitate, respectively, workpiece pressure adjustment and tool release by one hand of the operator manipulating the tool. A semiautomatic means for adjusting the tool's clamping pressure is also disclosed.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: August 1, 2000
    Inventors: William A. Warheit, Matthew W. Warheit
  • Patent number: 6012362
    Abstract: A utility pliers includes a first handle member with a fixed jaw secured to an end thereof, a second handle member, and a movable jaw. A connecting block includes a first part pivoted to the end of the first handle member and a second part pivoted to the second handle member. The connecting block further includes a slot defined therein. Two follower blocks are mounted to both sides of the connecting block. A pin is extended through the follower blocks and the slot of the connecting block to guide sliding movements of the follower blocks along the slot relative to the connecting block. The movable jaw is connected to the follower blocks to move therewith.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: January 11, 2000
    Inventor: Chao-Chi Wang
  • Patent number: 5992273
    Abstract: An improved set of adjustable locking pliers having two pivotally mounted jaws. A lock lever is pivotally mounted to one handle member and slidably retained in the longitudinal grooved portion of the opposite handle, and an adjustment screw threaded longitudinally into the grooved handle member bears upon the sliding end of the lever. Handle members are pivotally connected to retaining plates, said plates having a pin projecting between them with the jaws pivotally mounted and laterally disposed thereon. The gripping surfaces of the jaws interlock above the pin and meet flush in the locked position. The handle member having the adjustment screw has a curved end which spreads the bottom of the jaws apart in the locked position, thereby forcing the gripping surfaces together.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: November 30, 1999
    Inventor: Armand Galea
  • Patent number: 5609080
    Abstract: Locking pliers including fixed unit of generally elongate shape which forms at one end a fixed handle and at the other end a fixed jaw. A movable unit includes a movable jaw articulated to the fixed jaw, and an actuating lever of which one end is articulated to the movable jaw and the other end forms a movable handle. Also, a toggle mechanism is provided and includes a link articulated to an intermediate point of the lever and extending to a rear bearing point adjustable along the length of the fixed handle. The actuating lever crosses a straight line which joins the articulation of the movable jaw to the bearing point of the link, and the fixed handle extends substantially along a straight line joining the articulation to the bearing point.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: March 11, 1997
    Assignee: FACOM
    Inventor: Jean-Pierre Flavigny
  • Patent number: 5460065
    Abstract: An improved locking tool having a toggle mechanism extending between the operating handles has a cam located at an intersection of two of the elements of the toggle to vary the distance between the points of contact between the mechanism and the handles as the tool is opened or closed. The adjustment to such distance provides for increased ease of operation with less operating force. Disclosed embodiments include a further mechanism to assist in the separation of the handles and to resealably lock the handles in the clamped position.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: October 24, 1995
    Inventor: Bart Balmer
  • Patent number: 5233893
    Abstract: Plier type toggle wrenches may be divided into two broad types: the more common type in which the tool is caused to remain in its gripping mode when a portion of the toggle crosses over, or beyond the toggle center line; and, the less common type in which the toggle does not cross the toggle center line when the tool is in the gripping mode. The second type will not remain in the gripping mode unless the user applies continuous hand pressure, or, a releasable latching means is used to prevent the tool from opening. The present invention relates to the second type of toggle wrenches, and, in the preferred species of the invention, the latching means is in the nature of a sear, the elements of which engage in locked position when the tool is gripping a workpiece.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: August 10, 1993
    Inventor: Marion E. Schmidt
  • Patent number: 4889022
    Abstract: A quick releasable vice-grip pliers characterized by a thumb operable release lever releasing an adjustable toggle link, the release lever extending alongside an actuating lever of the pliers and having a fingr engageable pad near the pivot pin of the pliers jaws.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: December 26, 1989
    Inventor: Thomas P. Peviani
  • Patent number: 4820901
    Abstract: A quick releasable clamp for welder's ground and rod connections, characterized by a thumb operable release lever releasing an adjustable toggle link, wherein the opposed jaws have toothed engagement buried into a work piece clamped by extended lever arms having resilience for reserved clamping energy, and alternately wherein the opposed arms have wedging action to position a rod normal to the disposition of the clamp, and wherein the cable conductor is anchored remote from its terminal electrical fitting to the frame of the clamp.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: April 11, 1989
    Inventor: Thomas P. Peviani
  • Patent number: 3958468
    Abstract: An improvement in the pressure selector of a toggle type wrench, provides a visual means of selecting and adjusting the amount or degree of pressure that will be applied to the workpiece during clamping, thus reducing the possibility of damaging the workpiece by applying to much pressure.
    Type: Grant
    Filed: June 13, 1969
    Date of Patent: May 25, 1976
    Inventor: Robert W. Weller