With Pivot Pin Fulcrum In Notched Slot Patents (Class 81/411)
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Patent number: 12194605Abstract: A clamp includes a first clamp body and a second clamp body, which intersect and are fastened by a pivot mechanism, form a jaw opening at one end of a pivot mechanism, and have respective handles at the other end of the pivot mechanism. A stop mechanism is disposed on the first clamp body and an anti-pinch flange is disposed at a position, corresponding to the protruding stop mechanism, on the second clamp body to prevent the two handles of the first clamp body and the second clamp body from further closing.Type: GrantFiled: October 25, 2019Date of Patent: January 14, 2025Assignees: Hangzhou United Tools Co., Ltd., Hangzhou Great Star Industrial Co., Ltd.Inventor: Wei Wang
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Patent number: 11819987Abstract: Dual-mode adjustable pliers include a first handle member including a first handle and a first jaw and a second handle member including a second handle and a second jaw. The pliers may also include a channel disposed in the first handle member and an adjustable pivot affixed to the second handle member and disposed within the channel. The pliers may also include a movable mode selector member. In an engaged position, the mode selector member is engaged with both the first handle member and the second handle member, and, as the second handle is moved towards the first handle, the adjustable pivot moves within the channel. In a disengaged position, the mode selector member is not engaged with both the first handle member and the second handle member, and, as the second handle is moved towards the first handle, the adjustable pivot maintains a position within the channel.Type: GrantFiled: March 30, 2021Date of Patent: November 21, 2023Assignee: APEX BRANDS, INC.Inventor: Zhihong Fu
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Patent number: 11242852Abstract: An automobile vehicle variable displacement pump includes a pump body having a pump shaft extending through the pump body. A rotor is connected to the pump shaft and co-rotates with the pump shaft. The rotor has multiple radially outwardly directed slots. A vane support ring supports multiple vanes, the vanes individually slidably received in one of the slots of the rotor. A slide is rotatably connected to the pump body having the rotor and the vane support ring positioned within an inner wall of the slide. A bow spring plate defining a biasing member directly contacts the slide to bias the slide to rotate about an arc of curvature.Type: GrantFiled: April 1, 2019Date of Patent: February 8, 2022Assignee: GM Global Technology Operations LLCInventors: Andy Bennett, Sr., Sean McGowan
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Publication number: 20140116208Abstract: A pipe wrench or water pump wrench includes a clamp having a first shaft-like grip part and a handle having a second shaft-like grip part. A first jaw having a first gripping surface is disposed at one end of the clamp and a second jaw having a second gripping surface is disposed at one end of the handle. The second gripping surface is formed so as to be complementary to the first gripping surface. The jaws extend in a jaw gripping direction. The gripping surfaces form a first gripping recess. An adjusting mechanism having a toothed slot is disposed in the clamp. The toothed slot is curved in the jaw gripping direction. A pivot pin connects the clamp and the handle in a pivotable manner with respect to one another. The pivot pin is displaceable via the adjusting mechanism.Type: ApplicationFiled: June 18, 2012Publication date: May 1, 2014Applicant: ROTHENBERGER AGInventors: Norbert Guenther, Marco Theissen, Stefan Schultes
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Publication number: 20130255450Abstract: Pliers, of the type comprised of two handles, one male and another female that are joined to each other by a joint bolt; and where the male handle defines a slotted window, of straight or curved configuration, the walls of which carry teeth or grooves along which the female handle can reach various working positions to vary the fastening capacity of the plier mouth. It is characterized in that the joint bolt is mounted on the female handle with means to prevent its turning; it is mounted on the female handle without axial displacement; and has conformations, such as a reduced zone or milling, in correspondence with said slotted window. It is also characterized in that it has means for the mutual locking/unlocking between handles without axial displacement of the bolt with respect to them.Type: ApplicationFiled: March 8, 2013Publication date: October 3, 2013Applicant: ROTHENBERGER, S.A.Inventor: Jose Ignacio PICAZA IBARRONDO
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Patent number: 8434391Abstract: A hand operated gripping tool includes a first jaw fixedly connected with a first jaw handle, a second jaw movable relative to the first jaw such that the first and second jaws cooperably define a variable size space therebetween for receiving a part to be gripped, a second jaw handle pivotally connected with the second jaw for moving the second jaw relative to the first jaw, a link system pivotally connected to the second jaw handle and having a guided portion selectively engageable with a plurality of guide portions provided on the first jaw handle. The guided portion being engageable with a first of the guide portions to define a first range of movement of the second jaw towards the first jaw and a second of the guide portions to define a second range of movement of the second jaw towards the first jaw.Type: GrantFiled: May 5, 2010Date of Patent: May 7, 2013Assignee: American Grease Stick CompanyInventor: Nigel A. Buchanan
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Patent number: 8051749Abstract: There is disclosed herein an improved adjustable tool, such as a pair of pliers, having a first jaw portion and a second jaw portion, the first and second jaw portions being pivotably connected to one another by a pivot pin attached in any manner to one of the jaw portions and fitted within a channel defined within the other of the jaw portions. Preferably, the channel is formed by a plurality of pivot centers, including two non-adjacent terminal centers and at least one intermediate center, each center being connected to at least one other center by a slot to form a single pathway such that travel of the pivot pin between non-adjacent pivot centers requires travel through at least one intermediate pivot center, and the pivot pin has a positive tactile indication when properly seated in each pivot center.Type: GrantFiled: July 30, 2009Date of Patent: November 8, 2011Assignee: Snap-On IncorporatedInventors: Eric Gustafson, Glenn Kaufman, Garry Dillon
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Patent number: 7681477Abstract: The present invention discloses pliers including first and second members having first and second jaw members, respectively, and a first handle and a second handle. The jaws have first and second workpiece engaging surfaces constructed and arranged to generally correspond to first and second surfaces of a standardized workpiece, such as a hexagonal nut. A pivot assembly is provided to interact between the first and second members, which includes a plurality of pivot retaining regions disposed on the first jaw member and a pivot structure disposed within the second member. The pivot structure is engageable at a selected one of the retaining regions to adjust a relative position of a pivot axis between the first and second members so as to adjust an extent of relative spacing between the first and second jaws of the pliers.Type: GrantFiled: January 31, 2008Date of Patent: March 23, 2010Assignee: The Stanley WorksInventor: John Alexander
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Patent number: 7614324Abstract: An interengaged multiple-grip set of pliers includes an interengaging arm, an interengaged arm, and an articulation joint. One arm includes an elongated opening which is provided with a first engagement means having a pitch p, and the joint is arranged on the other arm and has a second engagement means. The joint is axially movable between a first position blocking any translation between the arms, and a second axial position allowing translation. The first engagement means and the second engagement means are arranged such that, starting from a first engagement position between the first engagement means and second engagement means, the joint is axially movable beyond the second axial position as far as a third axial position, and can then be moved in rotation about the axis thereof in order to bring the first and second engagement means into engagement in a second engagement position.Type: GrantFiled: January 10, 2008Date of Patent: November 10, 2009Assignee: Bost Garnache IndustriesInventors: Frédéric Bocquet, Guy Siruguet
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Patent number: 7594455Abstract: A fastener removing tool is provided. The fastener removing tool includes an extractor portion having an inside surface adapted to grip a fastener. The extractor portion further defines an outside surface with a cutting edge is adapted to cut a bore when the tool grips and removes a fastener. The fastener removing tool further includes a main body fixed relative to the extractor portion. The main body is adapted to engage with a driving tool for powering rotation of the fastener removing tool. The fastener removing tool also includes a cutter portion fixed relative to the main body opposite the extractor portion. The cutter portion includes a plurality of cutting members defining a plug forming space therebetween. A formed plug is to be placed into the bore formed during extraction of the fastener.Type: GrantFiled: October 23, 2007Date of Patent: September 29, 2009Assignee: Sears Brands, LLCInventors: Daniel C. Swanson, John J. Apida
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Publication number: 20090193943Abstract: The present invention discloses pliers including first and second members having first and second jaw members, respectively, and a first handle and a second handle. The jaws have first and second workpiece engaging surfaces constructed and arranged to generally correspond to first and second surfaces of a standardized workpiece, such as a hexagonal nut. A pivot assembly is provided to interact between the first and second members, which includes a plurality of pivot retaining regions disposed on the first jaw member and a pivot structure disposed within the second member. The pivot structure is engageable at a selected one of the retaining regions to adjust a relative position of a pivot axis between the first and second members so as to adjust an extent of relative spacing between the first and second jaws of the pliers.Type: ApplicationFiled: January 31, 2008Publication date: August 6, 2009Applicant: THE STANLEY WORKSInventor: John Alexander
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Patent number: 7530296Abstract: A combination tool that includes opposing jaws and handles that function as conventional pliers and wherein the handles are configured to be abutted with one another to form a spudding tool having a generally circular cross section and wherein at least one stud extending from one of the handles cooperatively seats within at least one hole in the opposing handle when the handles are abutted with one another.Type: GrantFiled: June 12, 2007Date of Patent: May 12, 2009Inventor: Brad Broadus
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Publication number: 20090094837Abstract: A flush cutter, having a first gripper part, having a first blade part comprising a blade, a second gripper part, comprising a second blade part having a blade, a joint pivot-connecting the blade parts and having handle elements associated with the blade parts.Type: ApplicationFiled: December 21, 2006Publication date: April 16, 2009Applicant: WIHA WERKZEUGE GmbHInventors: Thomas Schandelmeier, Otmar Karle
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Patent number: 7503243Abstract: Pliers (1) operable with one hand have two plier legs (2, 3), which pivot in relation to one another about an engagement bolt (4) and overlap one another in a crossover region. The plier legs (2, 3) are connected by a control element (13) and a spring drive (12), which pretensions a mouth of the pliers into an open position. The control element (13) has two links (15, 16) that are connected to one another in the manner of a toggle lever by means of a toggle joint. A spring (14) pretensions the links (15, 16) into an extended position, wherein the spring (14) can be changed in its length. The engagement bolt is inserted into the pliers legs during a spreading of the pliers legs.Type: GrantFiled: May 24, 2004Date of Patent: March 17, 2009Assignee: Knipex-Werk C. Gustav Putsch KGInventor: Ralf Putsch
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Publication number: 20090056510Abstract: A hand operated gripping tool includes a first jaw, a second jaw, a first cam associated with said first jaw, a pivotal handle associated with said first jaw and a second cam associated with said pivotal handle, said first and second jaws being cooperable to define a variable size space for receiving a workpiece and said first and second cams being operable to cause said first and second jaws to grip a said workpiece that is positioned in said variable size space.Type: ApplicationFiled: March 5, 2007Publication date: March 5, 2009Applicant: AMERICAN GREASE STICK COMPANYInventors: Nigel Alexander Buchanan, Seamus Duffy
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Publication number: 20080236345Abstract: The interengaged multiple-grip set of pliers comprises an interengaging arm, an interengaged arm, and an articulation joint, one arm comprising an elongate opening which is provided with first engagement means having a pitch p, the joint being arranged on the other arm and having second engagement means, the joint being axially movable between a first position blocking any translation between the arms, and a second axial position allowing translation.Type: ApplicationFiled: January 10, 2008Publication date: October 2, 2008Inventors: Frederic Bocquet, Guy Siruguet
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Patent number: 7406898Abstract: A hand held tool includes a slotted handle having a jaw end, a medial section, and a gripping end, the medial section including a slot having a gear tooth rack. An operative handle has a pinion gear end and a gripping end, with pinion gear being fixed with respect to the operative handle, and the pinion gear being positioned in the slot and having a toothed portion and a non-toothed portion. An operative jaw is slidably mounted with respect to the slotted handle to cooperate with the jaw of the slotted handle to group a workpiece, the operative jaw having one or more guide mechanisms to maintain the orientation of the jaw with respect to the slot as the jaw slides and as torque is applied to the operative jaw when a workpiece is gripped.Type: GrantFiled: March 20, 2007Date of Patent: August 5, 2008Inventor: Herbert L. Hall, Jr.
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Patent number: 7222558Abstract: Gripping pliers consisting of a jointed clamp and handle. The clamp contains a longitudinal slot with longitudinal apertures defining first and second detent positions. In the first position, the joint is movable whereas in the second position, the joint is locked. The handle is rotatably mounted on a bearing ring which permits fine adjustment of the opening width of the pliers.Type: GrantFiled: August 5, 2005Date of Patent: May 29, 2007Assignee: Eduard Willie GmbH & Co KGInventors: Lothar Schmitt, Hans-Joachim Chniel
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Patent number: 7191688Abstract: A hand held tool has a slotted handle having a jaw and at least one slot therein, the slotted handle defining a toothed rack within the slot; an operative handle having a jaw and a pinion gear, the pinion gear having at least one tooth suitably shaped to engage the toothed rack, the pinion gear being slidably movable along the slot; and, at least one post member for connecting the operative handle to the slotted handle.Type: GrantFiled: September 3, 2004Date of Patent: March 20, 2007Inventor: Herbert L. Hall, Jr.
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Patent number: 7182004Abstract: An adjustable device for pliers includes an operation member movably extending through a through hole in the first part and a slot in the second part. The operation member includes an exterior smooth section and a toothed section which can be disengageably engaged with teeth defined in the slot to set the width between the two jaws. A spring is biased to the operation member and stopped by an end member which is connected to a positioning member mounted to the operation member. The operation member is pushed to disengage the toothed section from the teeth of the slot so that the two parts can be pivoted to adjust the two jaws to a desired width and the operation member is released which is pushed back by the spring to engage the toothed section of the operation member with the teeth of the slot.Type: GrantFiled: August 23, 2005Date of Patent: February 27, 2007Inventor: Chien-Kuo Wang
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Patent number: 7146888Abstract: An adjustable pliers having first and second elongated members, each elongated member comprising a handle, a jaw, and a intermediate portion between the jaw and the handle. The intermediate portion of one of the elongated members includes an elongated slot, while the intermediate portion of the other elongated member includes a pivot pin that is slidingly captured in the elongated slot. A spring is captured in the elongated slot and engages the pivot pin so as to bias the jaw of one of the elongated members toward the jaw of the other elongated member. One of the handle members also includes a stop pin in its intermediate portion that abuts the intermediate portion of the other elongated member to limit the degree to which the elongated members can pivot with respect to each other about the pivot pin.Type: GrantFiled: November 30, 2001Date of Patent: December 12, 2006Assignee: Adjustable Clamp CompanyInventor: Charles Martinka
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Patent number: 7017458Abstract: Self adjusting grooved pliers include a first section having a jaw portion and a channel formed therethrough, adjacent the jaw portion and a second section having a jaw portion and a pivot extending therefrom. The pivot is slidably received in the channel to allow wider or narrower association between the jaw portion of the first section and the jaw portion of the second section. The pivot pivotally couples the first section to the second section for movement between an open position and a gripping position. A plurality of grooves is formed in the first section and a tongue extends from the second section. The tongue is received in one of the plurality of grooves, locking the pivot in position within the channel only upon the first section and the second section reaching the gripping position. A biasing assembly acts on the pivot, urging the pivot upward in the channel toward the jaw portion of the first section.Type: GrantFiled: August 1, 2003Date of Patent: March 28, 2006Inventors: Daniel L. Poole, Robert N. Poole
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Patent number: 6892609Abstract: A pair of pliers mainly includes a first body part having predetermined length, thickness, and shape; a second body part having length, thickness, and shape adapted to work with that of the first body part; and a joint pivotally connecting the first and the second body part together at a predetermined position. The joint is movable within a defined range to enable quick adjustment of jaw opening of the pliers, and is locked in place once it is moved to a desired position.Type: GrantFiled: May 7, 2003Date of Patent: May 17, 2005Assignee: King Lugger Inc.Inventor: Teng-Hsien Kuo
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Patent number: 6880434Abstract: A multiple joint pliers having a transversely retaining branch (2), a transversely retained branch (3), and a plate (4). The transversely retaining branch (2) which includes a first jaw (6), a first articulating intermediate zone (9) and a first handle (10). The first articulating zone defines a recess (12), and on either side thereof, a stepped portion (14). The transversely retained branch (3) includes a second jaw (21), a second articulating intermediate zone (23) and a second handle (22). The second articulating zone being received mobile in rotation, and selectively in translation, in the recess. The plate (4) maintaining the second articulating zone in the recess. The ends (27) of the plate are positioned on the respective stepped portions. The plate (4) is generally ?-shaped when viewed laterally.Type: GrantFiled: July 6, 2001Date of Patent: April 19, 2005Assignee: FacomInventor: Claude Nouvel
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Publication number: 20040020333Abstract: Self adjusting grooved pliers include a first section having a jaw portion and a channel formed therethrough, adjacent the jaw portion and a second section having a jaw portion and a pivot extending therefrom. The pivot is slidably received in the channel to allow wider or narrower association between the jaw portion of the first section and the jaw portion of the second section. The pivot pivotally couples the first section to the second section for movement between an open position and a gripping position. A plurality of grooves is formed in the first section and a tongue extends from the second section. The tongue is received in one of the plurality of grooves, locking the pivot in position within the channel only upon the first section and the second section reaching the gripping position. A biasing assembly acts on the pivot, urging the pivot upward in the channel toward the jaw portion of the first section.Type: ApplicationFiled: August 1, 2003Publication date: February 5, 2004Inventors: Daniel L. Poole, Robert N. Poole
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Patent number: 6318217Abstract: The invention relates to gripping pliers with an upper extended handle 2 and a lower extended handle 1 which comprise a handle section 9, 7 and a jaw 8, 6 positioned opposite the handle section 9, 7, with the upper extended handle 2 and the lower extended handle 1 being hingeingly supported in relation to each other in a box joint and with the joint comprising an engagement position and an adjustment position, and furthermore with an adjustment element 11 manually displaceable against a spring 19 in the direction of the swivelling axis being provided for adjusting the engagement position and the adjustment position, with the lower extended handle 1 comprising a slot in the joint area and with the upper extended handle 2 being inserted through the lower extended handle 1 in the joint area.Type: GrantFiled: September 9, 1999Date of Patent: November 20, 2001Assignee: VBW Vereinigte Beckersche Werkzeugfabriken GmbH & Co.Inventors: Frank Emhardt, Jens-Uwe Schmidt, Joachim Krugmann, Sieghardt Schwandrau, Frank Suhr
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Patent number: 6311588Abstract: Self-adjusting pliers including first and second members each handle portions and jaw portions. The first member defines a rack having a plurality of teeth. A rack engagement structure is mounted to an intermediate portion of the second member and positioned adjacent the rack. During initial manual movement of the handle portions towards one another, the rack engagement structure travels in disengaged, spaced relation with respect to the rack. Then, after the jaw portions engage opposing sides of a workpiece, continued movement of the handle portions towards one another causes movement of the rack engagement structure toward the rack until the rack engagement structure engages the rack. The rack engagement structure has a movement restrictive portion being cooperable with the rack so as to limit the movement of the rack engagement structure toward the rack when the jaw portions contact one another in the absence of a workpiece therebetween.Type: GrantFiled: January 14, 2000Date of Patent: November 6, 2001Assignee: The Stanley WorksInventors: Robert A. St. John, Keith Lombardi
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Patent number: 6199459Abstract: Improved adjustable pliers, of the kind comprised of different bodies bearing the jaws of the mouth, and which pivot together on an axle-pivot, which moves in a groove, foreseen in one of the bodies, which has monodirectional teeth on one of its larger walls, mounting a catch, on said axle-pivot foreseen in the other body, which defines combined monodirectional teeth and an operating arm to release these teeth at the user's will. This catch has a spring, whose aim is to keep it in a fastened position, until the catch arm is activated.Type: GrantFiled: December 22, 1999Date of Patent: March 13, 2001Assignee: Super-Ego Tools, S.A.Inventor: Manuel Azkona
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Patent number: 6116124Abstract: Adjustable pliers having a pair of handles, each handle having a jaw portion, an intermediate portion and a hand-grip portion. The handles intersect each other and are pivotally mounted to each other so that movement of the hand-grip portions in one direction will move the jaw portions in the same direction. Holding means in the form of a pin extends from one of the intermediate portions and a slot is in the other intermediate portion. The holding pin extends into the slot and is slidable along the slot. The slot has receiving means in the form of notches which will receive the said holding pin when the jaw portions are placed in a predetermined position and hold them in that position. A locking assembly is also provided on the handle members to lock the two in position.Type: GrantFiled: June 24, 1999Date of Patent: September 12, 2000Assignee: Great Neck Saw Manufacturers, Inc.Inventor: Qiu Jian Ping
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Patent number: 6019020Abstract: A pipe wrench includes a first elongated member and a second elongated member. A first intermediate section of the first elongated member includes a recess defined in an inner side thereof that faces a second intermediate section of the second elongated member. A bottom wall that defines the recess has a ridge formed thereon. A first stepped portion and a second stepped portion are formed on two sides of the recess, respectively. A first pin and a second pin are respectively formed on the first stepped portion and the second stepped portion. The second intermediate section includes a number of parallel channels defined in an inner side thereof that faces the first intermediate section. The ridge is releasably engaged with one of the channels. A panel is mounted to an outer side of second intermediate section and includes two holes through which the first pin and the second pin are extended and riveted, respectively.Type: GrantFiled: September 14, 1998Date of Patent: February 1, 2000Inventor: Mou-Tang Liou
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Patent number: 5291810Abstract: Pinch free gripping pliers are described including first and second pivoted legs joined by a pivot bolt. The pivot bolt is mounted to the first leg and is slidably received in an elongated slot in the second leg, thereby enabling the pliers to have multiple jaw opening ranges. An arcuate rib on the shank of one leg engages and meshes with any selected one of several arcuate grooves formed in the second leg, thereby maintaining the setting of the pivot bolt. An overtravel stop member is located on the first leg, facing an edge surface on the second leg that is acutely angled relative to the slot. The overtravel stop member and edge surface engage as the handles of the pliers close, limiting further closing and preventing the handles from coming together closer than a predetermined safety distance. The predetermined safety distance is the same at each of the multiple jaw opening ranges, by provision of the angled edge surface.Type: GrantFiled: January 19, 1993Date of Patent: March 8, 1994Inventor: Jack Lins
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Patent number: 5060543Abstract: A self-adjusting tool having first and second elongated members, each of which have a workend and an oppositely located handle means for applying force to the tool. The first member includes a raceway positioned intermediate of the work end and handle. A connector is provided adjacent to the work ends for slideably and pivotally connecting the first and second members together. The connector includes an elongated slot in the first member having ratchet teeth along at least a portion of one edge thereof and a pawl positioned to slide within the slot and to pivotally engage the ratchet teeth. A fastener for securing the first and second members slideably together and securing the pawl in the slot is provided as part of the connector. A torsion arm with first and second ends is operably positioned between the first and second members. The first end includes a torsion element connected to the second member and the second end is slideably positioned within the raceway.Type: GrantFiled: January 30, 1990Date of Patent: October 29, 1991Inventor: William A. Warheit
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Patent number: 4901609Abstract: A pair of adjustable pliers 10 is comprised of first and second plier halves 14, 16 pivotally and slideably joined together by a nut and bolt-type combination 18 fixed to the first plier half 14 and extending through a slot 23 in the second plier half 16. The second plier half 16 includes a series of arcuate grooves 24 cut into its interior surface, facing the first plier half 14. Correspondingly, the first plier half 14 includes an arcuate raised portion 28 that dimensionally matches and is pivotable within each of the arcuate slots 24. To adjust the jaw portions 21, 22 of the pliers 10, the arcuate raised portion 28 is selectively engaged with one of the series of arcuate grooves 24. In order to engage the arcuate raised portion 28 with a selected one of the arcuate grooves 24, the pliers 10 are manipulated to a fully open, adjusting position where the arcuate raised portion 28 disengages the arcuate grooves 24 and is positioned substantially parallel to the slot 23.Type: GrantFiled: May 5, 1989Date of Patent: February 20, 1990Assignee: Compaq Computer CorporationInventor: David L. Crum
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Patent number: 4802390Abstract: Utility pliers for single-handed manipulation, capable of automatically adjusting the distance between gripping jaws in relation to the size of the workpiece to be gripped, and utilizing one or more hidden springs to cause the automatic adjustment function. Alternative embodiments enable reduction of manufacturing costs, improved location of certain operative components, and the selective inclusion of additional features which enhance the use and operation.Type: GrantFiled: March 19, 1987Date of Patent: February 7, 1989Inventor: William A. Warheit
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Patent number: 4726265Abstract: Gripping pliers with an attached grooved slip joint, with a slot provided in one plier leg and intended for receiving with variable positioning the hinge bolt located in the other leg, in which the grooves, notches or the like safeguarding the setting of the pliers are provided in a strip arranged laterally next to the slot on the sliding surface of the first plier leg, and the other plier leg has on its sliding surface stops interacting with this strip and limiting the closing and opening of the pliers.Type: GrantFiled: September 5, 1986Date of Patent: February 23, 1988Assignee: Harry P. Will Werkzeugfabrik GmbH & Co. KGInventor: Rolf Reich
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Patent number: 4662252Abstract: Utility pliers for single-handed manipulation, capable of automatically adjusting the distance between gripping jaws in relation to the size of the workpiece to be gripped, and utilizing one or more hidden springs to cause the automatic adjustment function. Alternative embodiments enable reduction of manufacturing costs, improved location of certain operative components, and the selective inclusion of additional features which enhance the use and operation.Type: GrantFiled: September 18, 1985Date of Patent: May 5, 1987Inventor: William A. Warheit
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Patent number: 4581960Abstract: The present invention relates to water-pump pliers having two plier handles which cross each other and are connected to each other by a pivot pin 7 whereby the handles form plier jaws above the region of crossing of the handles and grip sections below the region of crossing of the handles, and in which the first plier handle is adjustable in steps relative to the second plier handle to change the size of the plier jaws. The pivot pin is fitted and guided in a bore defined in the first plier handle and enters into form-locked engagement with the profiled flanks of a slot in the second plier handle, where the slot lies in the crossing region of the handles, and, in order to obtain a structural form which is simple to manufacture, favorable in operation and stable in use, the pivot pin is rendered incapable of turning with respect to the second plier handle.Type: GrantFiled: January 25, 1984Date of Patent: April 15, 1986Assignee: Knipex-Werk C. Gustav PutschInventors: Karl Putsch, Ralf Putsch
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Patent number: 4462403Abstract: 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: GrantFiled: January 21, 1983Date of Patent: July 31, 1984Assignee: Vernitron CorporationInventor: Werner Martin
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Patent number: 4269089Abstract: A rapidly adjustable ratchet pliers having a first and second jaw member integral with a first and second handle member that pivotally cooperate to grasp a workpiece between the jaw members. The pliers also include a ratchet dog pivotally disposed in a slot of the first jaw member. The slot includes a surface defining tooth cavities and a smooth surface opposite thereof. The ratchet dog includes a biasing means that slidably and continuously contacts the smooth surface and a tooth normally biased into engagement with the tooth cavity surface.An abutment projects from a surface of the second jaw member into the slot whereby outward pivotal movement of the second handle member causes the abutment to contact a shelf of the ratchet dog and thereby release the dog from its biased engagement with the tooth cavity surface of the slot. Thereafter, the first jaw member may be adjusted relative to the second jaw member.Type: GrantFiled: December 10, 1979Date of Patent: May 26, 1981Inventor: Charles E. Hastings
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Patent number: 4232573Abstract: A device for retaining a set of slip-type pliers in functional adjustment is disclosed. The device comprises a shouldered dowel pin axially slidable between two positions, the first permitting freedom of adjustment between the two plier members, the second position retaining the plier members in functional adjustment while permitting freedom of use thereof. The dowel pin is retained in its second position by a spring mounted therewith and carried by one of the plier members. An alternative embodiment incorporates a modified pin pivotally connecting the two plier members in rotating relation with each other. This pin is spring mounted and includes a shoulder or cap which selectively engages each of a series of spaced counterbores within the adjusting slot of one of the plier members for retaining the plier members in functional adjustment with each other during use.Type: GrantFiled: January 8, 1979Date of Patent: November 11, 1980Inventor: Marvin H. Dace, Jr.