Resiliently Urged Patents (Class 81/417)
  • Patent number: 10661024
    Abstract: A needle shield remover for removing a needle shield covering a needle on a syringe includes a body having a proximal portion and a distal portion. The distal portion is moveable between a contracted configuration and an expanded configuration in response to opposite movement of the proximal portion. The distal portion includes an internal opening for receiving and at least partially surrounding a needle shield therein. An anchor extends inwardly from the distal portion into engagement with the needle shield when the distal portion is in the contracted configuration to secure the body to the needle shield. A sleeve is in fixed axial arrangement with the proximal portion of the body. The axial engagement maintains the distal portion of the body in the contracted configuration such that force applied to the sleeve away from the body removes the needle shield and body from a syringe.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: May 26, 2020
    Assignee: West Pharmaceutical Services, Inc.
    Inventor: Timothy Allen
  • Patent number: 8863623
    Abstract: An open-close work implement is provided, wherein an object can be easily held without being damaged by a simple operation of merely gripping or squeezing the open-close operation part (5) with the fingertips. A first half member (1) and a second half member (2) are intersected and pivotally fitted together, an open-close working part (4) is provided to the distal end, and an open-close operation part (5) is provided to the proximal end. When increasing closing force is applied to the open-close operation part, the open-close operation part flexes and a contact part (7) and a receiving part (6) come in contact. Even though the closing force is further increased while the receiving part and the contact part are in a state of contact, the closing force is not transmitted to the open-close working part, and the holding force of the open-close working part does not increase.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: October 21, 2014
    Assignee: Nashimoto Industries Co., Ltd.
    Inventor: Masami Nashimoto
  • Patent number: 8555754
    Abstract: A tool, such as fixed-joint pliers, has first and second levers which are movably joined. The levers are joined at a joint comprising a housing and a coupler. The housing is defined by a first housing portion of the first lever and a second housing portion of the second lever. The housing has an interior area which houses a biasing member, such as a torsion spring. The coupler may comprise first and second bushings which extend through a passage through the housing and the torsion spring therein, and a male fastener which extends through one of the bushings and into engagement with the other bushing. The pliers have a thin profile and are biased to an open position for use.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: October 15, 2013
    Assignee: JS Products, Inc.
    Inventors: Chungeng Chen, John A. Hermann
  • Patent number: 7975577
    Abstract: The invention relates to a self-opening hand tool (1) with two tool halves (2, 3) that cross over each other at a joint (4), in particular in the form of a pair of pliers, scissors or the like, with one half of the tool (2, 3) forming a jaw (5) on one side of the joint (4) and a handle (6) on the other side of the joint (4), with a spring element (8) of elastically deformable rubber or plastic material also associated with a handle (6), which has an opening (9) through which the handle (6) passes, and that can be moved into at least one operating position at will by turning it from a non-operating position, in which operating position the spring element (8) contacts the opposite handle (6) depending on the spread angle of the handle (6) and the generation of the appropriate restoring force.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: July 12, 2011
    Assignee: Will Werkzeuge GmbH & Co. KG
    Inventor: Stefan Pfab
  • Patent number: 7258047
    Abstract: The present invention relates to a pliers that includes first and second arms that are pivotally interconnected utilizing an appropriate mechanical fastener. A spring is generally disposed about the mechanical fastener to bias the pliers toward an open condition. Further, a bearing is generally located between the first and second arms to hinder friction between the first and second arms, facilitate movement of the pliers between open and closed conditions, and provide some control for the range of pivotal motion of the first arm relative to the second arm.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: August 21, 2007
    Inventors: Thomas J. Wolter, Steven A. Galella
  • Patent number: 7146888
    Abstract: 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: Grant
    Filed: November 30, 2001
    Date of Patent: December 12, 2006
    Assignee: Adjustable Clamp Company
    Inventor: Charles Martinka
  • Patent number: 7143672
    Abstract: A hand tool has two crossed members each having a handle and a jaw connected to each other at a pivot point. A leaf spring biases the handles towards an open position. The leaf spring can be selectively engaged or disengaged by the user.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: December 5, 2006
    Assignee: Helen of Troy Limited
    Inventors: Anthony Di Bitonto, John Thomas Jacobsen, Wilfrido Loor
  • Patent number: 7100481
    Abstract: A wire stripper has a pair of elongated frames pivotably joined together by a pivot pin and defining handles and jaws. The handles are covered by sleeves which include thumb wells which cover the ends of the pivot pin. A mechanical interlock is provided between the handles and the sleeves. The sleeves have slots for receiving the handles. The slots are offset so the front and rear surfaces of opposite sleeves are coplanar. The sleeves have a core and cushion grip overmolded on the core. A molding projection on the core allows precise placement of the core in a mold during formation of the cushion grip. A spring biases the frames to an open position. A locking member can be set by a sliding motion toward the handle end to hold the handles in a closed position. A curved shoulder on the edge of a handle wipes across a screw hole opening in the opposite jaw to provide a screw cutting function with a slicing action.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: September 5, 2006
    Assignee: IDEAL Industries, Inc.
    Inventors: Bruce W. Hartranft, Bruce P. Konen, Scott Huff
  • Patent number: 7055414
    Abstract: A wire stripper has a pair of elongated frames pivotably joined together by a pivot pin and defining handles and jaws. The handles are covered by sleeves which include thumb wells which cover the ends of the pivot pin. A mechanical interlock is provided between the handles and the sleeves. The sleeves have slots for receiving the handles. The slots are offset so the front and rear surfaces of opposite sleeves are coplanar. The sleeves have a core and cushion grip overmolded on the core. A molding projection on the core allows precise placement of the core in a mold during formation of the cushion grip. A spring biases the frames to an open position. Legs of the spring are fastened to the sleeves.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: June 6, 2006
    Assignee: IDEAL Industries, Inc.
    Inventor: Bruce P. Konen
  • Patent number: 7021177
    Abstract: The invention relates to a hand tool comprising a first leg (1) and a second leg (2) whereby a front part of the respective leg creates a tool part (3 and 4 respectively) and a rear part of the respective leg creates a gripping part (5 and 6 respectively). The gripping part (5) of at least one of the legs comprises an outer part in the form of a sleeve (10) which is fitted over an inner part (9) connected with the tool part (3). Further the hand tool comprises at least one spring part (12) with a first freely moveable end part (13) and a second end part firmly held at the mentioned sleeve (10). This spring part (12) is intended to again move the legs (1, 2) apart after they have been squeezed together in using the tool.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: April 4, 2006
    Assignee: Kapman AB
    Inventors: Mattias Lövemark, Jan Ol-Lars
  • Patent number: 6941845
    Abstract: A hand tool includes a head portion having two jaw portions, a handle portion pivotally mounted on the head portion and having two holding grips, a mounting tube mounted on a first one of the two holding grips, a push rod mounted on a second one of the two holding grips and slidably mounted in the mounting tube, and an elastic member mounted in the mounting tube and urged between the mounting tube and the push rod. Thus, the two holding grips of the handle portion have the same bent angle, thereby facilitating the user adjusting the included angle between the head portion and the handle portion.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: September 13, 2005
    Inventor: Chih-Ching Hsien
  • Patent number: 6895840
    Abstract: Water pump pliers consisting of two pincer parts crossing themselves in a connecting region, each consisting of a handle portion and a jaw wherein said pincer parts are movably connected in said connecting region in such a way that said first pincer can be displaced relative to the second pincer to adjust a jaw opening-width on the one hand, and that the pincer parts with jaws can reciprocally pivot on the other hand. A blocking means is provided in such a manner that further shifting of the first pincer part is blocked when the jaws stop against a workpiece to be gripped. A spring element is installed between the pincer parts in such a way that a releasing force from the spring, operating in the opening direction of the jaws, acts upon the pincer parts.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: May 24, 2005
    Inventors: Gunther Schulz, Bodo Nilles
  • Patent number: 6739217
    Abstract: A wire stripper has a pair of elongated frames pivotably joined together by a pivot pin and defining handles and jaws. The handles are covered by sleeves which include thumb wells which cover the ends of the pivot pin. A mechanical interlock is provided between the handles and the sleeves. The sleeves have slots for receiving the handles. The slots are offset so the front and rear surfaces of opposite sleeves are coplanar. The sleeves have a core and cushion grip overmolded on the core. A molding projection on the core allows precise placement of the core in a mold during formation of the cushion grip. A spring biases the frames to an open position. A locking member can be set by a sliding motion toward the handle end to hold the handles in a closed position. A curved shoulder on the edge of a handle wipes across a screw hole opening in the opposite jaw to provide a screw cutting function with a slicing action.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: May 25, 2004
    Assignee: Ideal Industries, Inc.
    Inventors: Bruce W. Hartranft, Bruce P. Konen, Scott Huff
  • Patent number: 6708587
    Abstract: Clamping or expanding pliers having a first plier arm pivotally connected to a second plier arm, and a toothed structure attached to the first plier arm. A catch member is movably connected to the second plier arm. A single bias spring biases the plier arm apart and biases the catch member to a resting position engaged with the toothed structure. Either with or without the single bias spring the catch member may include an intermediate release position allowing a separating movement of the first and second plier arms without disengaging the catch member from the toothed structure. The first and second plier arms may include a resiliently deformable plastic, with the catch member arranged so that the force required to move it to its release position is lower than the clamping force.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: March 23, 2004
    Assignee: Wolfcraft GmbH
    Inventors: Zhigniew Noniewicz, Hans-Jurgen Schuller
  • Patent number: 6530099
    Abstract: A composite pliers has crossed levers, each including a non-metallic body with an exposed metal cutter blade. The pliers includes strengthening and/or retaining structure around a pivot joint which does not extend into handle portions of the levers. This structure strengthens the pivot joint and can help confine the pliers parts in the event of failure. In one embodiment, each lever has a pivot joint strengthening structure insert molded therein, the structure extending into a jaw portion of each lever and protruding from the non-metallic body to form a workpiece engagement surface, such as a cutting blade. In one form, the jaws have more than one row of teeth with adjacent rows offset from each other. When the pliers is assembled from two identical lever members, each row of teeth on one lever will face the offset row of teeth on the other lever so that the peaks of the teeth on one lever fall within the grooves between the teeth on the opposing row.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: March 11, 2003
    Assignee: Snap-on Technologies, Inc.
    Inventor: Dean J. Iwinski
  • Patent number: 6497165
    Abstract: A pair of water pump pliers, comprising two pincer parts crossing themselves in a connecting region, each consisting of a handle portion and a jaw, wherein the pincer parts are movably connected in the connecting region in such a manner that the first pincer can be displaced relative to the second pincer to adjust the jaw opening width. The pincer parts reciprocally pivot on the other hand, wherein a blocking mechanism is provided in such a manner that further shifting of the first pincer part is blocked when the jaws stop against a workpiece. Also, a spring element is installed between the handle is such a manner that a releasing force from the spring, operating in the jaws' opening direction, acts upon the pincer parts.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: December 24, 2002
    Assignee: Serenco Nederland BV
    Inventors: Gunther Schulz, Bodo Nilles
  • Patent number: 6431035
    Abstract: Mounting wire spokes in a wheel, such as on a bicycle, requires even tightening of each spoke, and to attain such even tightening, wire wheel spoke tightening clamp apparatus and method is disclosed to tightly hold the spoke adjacent to the spoke threaded section, by the spoke tightening clamp, while tightening the threaded nipple onto the spoke threaded threaded section to prevent twisting of the spoke, to thus attain a straight, non-wobbly wheel assembly.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: August 13, 2002
    Inventors: Karl J. Hendrikse, Chris J. Shermeister
  • Patent number: 6234050
    Abstract: A hand tool such as a wire stipper or pliers has two elongated members pivotably connected at a joint with a pair of facing jaws on one side of the joint and a pair of handles on the other side of the joint. The handles are ergonomically designed for user comfort. One of the handles is curved about a variable radius on one side only of the handle. The other handle has a complex curvature about centers on both sides of that handle. The handles are covered with sleeves that extend on the outside of the handle from the end to the pivot joint.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: May 22, 2001
    Assignee: Ideal Industries, Inc.
    Inventors: Bruce P. Konen, Robert F. Pierson
  • Patent number: 6176158
    Abstract: A pincers includes two main bodies, a fixing member, a treatment member, a tightening member and a resilient member. By utilizing the treatment member, the fixing member and the resilient member disposed between the main bodies and the fixing member, the pincers has a good mating relationship and can be easily assembled so that the using effect of the pincers is improved.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: January 23, 2001
    Inventor: Jin-Fu Chen
  • Patent number: 6131495
    Abstract: A tool includes two grips and at least one tool head. The grips can be opened to different extents so as to rotate the fixing pins of the grips relative to the openings of the tool head. Accordingly, the short sides of the fixing pins can be respectively aligned with the openings to permit the detachment of the grips from the tool head. Otherwise, the grips are stopped by the long sides of the fixing, pins from detaching from the tool head. The grips can be easily and quickly assembled with or disassembled from the tool head. In addition, the replacement of the tool head can be performed by hand without using any tool or switch. Also, the tool has fewer components which are not easy to miss.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: October 17, 2000
    Inventor: Jin-Fu Chen
  • Patent number: 6109143
    Abstract: A pliers type tool includes two pivoted handle shanks between an S-shaped return spring is attached. The spring is made from a fiber-reinforced polymer and has a greater thickness at the center than at the ends. The width of the spring is gradually reduced from one end to the other. The center is disposed farther from one end than from the other end when the spring is relaxed.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: August 29, 2000
    Assignee: Kapman AB
    Inventor: Conny Jansson
  • Patent number: 5904078
    Abstract: A slip-joint pliers has crossed pivoting levers joined at pivot portions thereof by a flat-sided bolt extending through openings in the levers and engaged with a nut, one of the openings being elongated and generally dumbbell-shaped to accommodate the slip-joint movement. The pivot portions of the levers have flat facing inner surfaces, in each of which is formed a single-level spring recess surrounding the associated opening, each recess having a peripheral side wall and a flat planar bottom wall extending from the side wall to the associated opening. A helical torsion spring is seated in the recesses and encircles the bolt and has tangent ends respectively engageable with straight bearing portions of the recesses.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: May 18, 1999
    Assignee: Snap-on Technologies, Inc.
    Inventors: Eric T. Gustafson, Christopher D. Thompson
  • Patent number: 5619892
    Abstract: A pivoting lever hand tool is provided with an opening spring which clips onto one of the lever handles and resiliently engages the other to bias the handles open. The spring has a flexible and resilient coupling channel which clips onto one handle and includes a plurality of flat panel sections extending end-to-end of the channel. A bias leaf is unitary with one of the panel sections and projects from one end thereof out of the plane thereof to engage the other handle, and terminates at a distal end which engages the one handle. The bias leaf may be provided along all or part of its length with single or double over layers, either laminated or folded over. The bias leaf may extend either away from the coupling channel or back along its length.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: April 15, 1997
    Assignee: Snap-on Technologies, Inc.
    Inventor: Daniel M. Eggert
  • Patent number: 5607344
    Abstract: An apparatus for gripping and holding glass during a glass grinding process. The glass gripping and holding apparatus includes an elongated top shank and an elongated bottom shank pivotally connected, with the top shank being inclined toward the bottom shank. Both shanks each have a respective glass-gripping end portion that oppose one another in generally parallel disposition when gripping a piece of glass. A spring operatively connects the shanks toward each other, biasing the glass-gripping end portions of the shanks toward each other. A generally circular boss is located on the bottom shank to facilitate mobility of the apparatus across a table surface of a glass grinder.
    Type: Grant
    Filed: May 10, 1995
    Date of Patent: March 4, 1997
    Inventor: Nicholas Endres
  • Patent number: 5603643
    Abstract: A booster clamp is provided and includes a first lever having a first planar surface and a second lever pivotally connected to the first lever and having a second planar surface. The booster clamp has a substantially cylindrical pivot joint which includes a substantially cylindrical elastomeric element and first and second substantially planar surfaces substantially parallel to one another, wherein the first planar surface of the joint is connected to the first planar surface of the first lever and the second planar surface of the joint is connected to the second planar surface of the second lever.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: February 18, 1997
    Assignee: Snap-on Technologies, Inc.
    Inventor: Bert Krivec
  • Patent number: 5595100
    Abstract: A hand guard is provided for use in combination with locking pliers having mutually hinged main and operating handles which are movable between opened and closed positions. It comprises a protective sleeve for conformable reception enveloping the mid-sectors of the locking pliers. The protective sleeve includes first and second opposed spaced apart panels and upper and lower opposed spaced apart panels for receiving the main and operating handles therebetween. The protective sleeve is of resiliently stretchable material such that when the locking pliers are in the closed position, the upper panel conformingly engages the main handle and the lower panel conformingly engages the operating handle and the first and second panels are substantially planar, extending, respectively, between the upper and lower panels, and when the locking pliers are in the opened position, the first and second panels are drawn into a reformed configuration while biasing the operating handle toward the closed position.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: January 21, 1997
    Inventor: Robert E. Sollo
  • Patent number: 5522290
    Abstract: The pliers include an endless loop, a top jaw appended to the endless loop, and a bottom jaw appended to the endless loop. The endless loop includes in series a top grip handle, a spring segment, a bottom grip handle and a compliant strip interconnecting the top and bottom grip handles. A rolling surface on the top grip handle rolls on a contact portion of the bottom grip handle. The rolling action causes the compliant strip to flex which causes the top and bottom jaws to move toward one another. The endless loop provides a built-in automatic spring and enhances lateral stability.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: June 4, 1996
    Inventors: Steven C. Visser, Ashok Midha
  • Patent number: 5522289
    Abstract: A pivoting lever hand tool is provided with an opening spring which clips onto one of the lever handles and resiliently engages the other to bias the handles open. The spring has a flexible and resilient coupling channel which clips onto one handle and includes a plurality of flat panel sections extending end-to-end of the channel. A bias leaf is unitary with one of the panel sections and projects from one end thereof out of the plane thereof to engage the other handle, and terminates at a distal end which engages the one handle. The bias leaf may be provided along all or part of its length with single or double over layers, either laminated or folded over. The bias leaf may extend either away from the coupling channel or back along its length.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: June 4, 1996
    Assignee: Snap-on Incorporated
    Inventor: Daniel M. Eggert
  • Patent number: 4965958
    Abstract: A fish holder including a handle having a lower jaw extending transversely therefrom. A trigger is pivotally positioned inside of the handle and includes an upper jaw that extends transversely to the trigger and overlies the lower jaw arm. A biasing spring internally engages the trigger and the handle to maintain the jaw in an open position. When the handle and the trigger are grasped by a hand and squeezed, the jaw will close.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: October 30, 1990
    Assignee: Tempress, Inc.
    Inventors: Steven D. Cedergreen, Ray Aspiri, Kim R. Hunter, Butkui Chiu
  • Patent number: 4919021
    Abstract: There is provided specialized pliers particularly adapted to close a locking ring which has locking members on the different planes. The pliers include a pair of jaws, each having grooves for receiving the locking ring. Inclined planes, which abut against one another as the jaws close, are provided on both jaws for moving the jaws normal to their plane of rotation thus bending the locking ring so that the locking mechanism will be interconnected. Spring elements are provided for maintaining the jaws in a predetermined position relative to one another.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: April 24, 1990
    Assignee: Jensen Engineering
    Inventor: Joseph K. Franks
  • Patent number: 4903558
    Abstract: Slip-joint pliers of the two-position jaw adjustment type and adjusted by a method of pivot pin through slots shifting in the inoperative positions of the pliers, and settings maintained by interference of opposing plier body elements and in which the pivot pin remains on the respective center lines of the tool in the operative positions resulting in a cooperative geometry for spring loading the plier handles and enabling the plier jaws to fully clamp as well as have the tool cut materials in both jaw adjusted positions, the spring loaded handles set, prior to initiated spring resistance, so that the cutting elements are lined up, ready to start cutting as an alternative to visual alignment only, of the cutters.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: February 27, 1990
    Inventor: Don le Duc
  • Patent number: 4875394
    Abstract: Improvements in a hand manipulable device with bifurcated jaws for removing mushroom shaped stoppers from sparkling beverage bottles wherein each jaw contains a recess enabling the device to be repositioned directly around the stopper's stem and on top of the bottle when the stopper has been partially removed, thereby providing a means for additional leverage and lift capability; pivotally interconnected upper and lower levels which are interlocked, thereby eliminating the likelihood that the pivot action might be either too tight or too loose, and enabling the insertion of a hidden spring which eliminates the need for an exposed and perhaps hazardous spring between the handles; and without an exposed spring, grip means is permitted beneath the handles that provides an alternate method of stopper removal; the addition of clips to the upper jaw to prevent the stopper from ricocheting out from under the retaining arm; and a retaining arm which is either flexible or movable thereby permitting a downwardly direct
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: October 24, 1989
    Inventor: Cleveland B. Crudgington, Jr.
  • Patent number: 4719827
    Abstract: Tongue-and-groove pliers comprises a pair of plier members each having a jaw portion, a joint portion and a handle portion, a pivotal bolt, a nut, a spring member and a pressure transmitting member. The joint portion of one of the pair of plier members has a bolt hole, an annular groove including a through hole, and an arcuate protuberance. The joint portion of the other plier member has an oblong slot and a plurality of arcuate adjustable channels with which the arcuate protuberance is engaged. The spring member has a gap, a long downward projection and a short downward projection and is accommodated within the annular groove about the bolt hole. The pressure transmitting member has an insertion hole for the pivotal bolt and an engaging hole for the long downward projection of the spring member and is loosely fitted movably in the oblong slot of the other plier member.
    Type: Grant
    Filed: April 22, 1986
    Date of Patent: January 19, 1988
    Assignee: Igarashi Plier Co., Ltd.
    Inventor: Tsutomu Igarashi
  • Patent number: 4669340
    Abstract: Slip-joint pliers have a pair of plier members each having a jaw portion and a handle portion, a pivotal bolt, a nut, and a spring member. The spring member is arcuate and has long and short downward projections. One of the plier members has a bolt whole and an annular groove including a through hole for accommodating the spring member therein. The other plier member has a bolt hole defined by first and second slip changeover holes communicating with each other and an engaging recess contiguously communicating with the first slip changeover hole. The short downward projection of the spring member abuts the wall surface of the through hole and the long downward projection contacts the wall surface of either the first slip changeover hole or the engaging recess to automatically bias open the jaw portions of the pair of plier members.
    Type: Grant
    Filed: April 22, 1986
    Date of Patent: June 2, 1987
    Assignee: Igarashi Plier Co., Ltd.
    Inventor: Tsutomu Igarashi
  • Patent number: 4635510
    Abstract: In a hand tool, a pair of elongated tool arms interconnected by a pivot, a torsion spring having legs which are connected respectively to the tool arms to bias the arms to an open position, and a plier lock element member having a spaced pair of eyes and a connecting bridge, with the plier element being slidably connected to the torsion spring legs such that the element is movable between locking and release positions. When in the lock position, the element is near the spring interconnection and acts to restrain the spring from biasing, and to inhibit relative work movement of the tool arms. When in the release position, the element selectively permits work performing movement of the arms about the pivot. One of the spring legs includes a working offset portion, and each of the spring legs includes a locking offset portion located near its connection with the associated one of the tool arms.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: January 13, 1987
    Assignee: Milbar Corporation
    Inventor: Joe G. Box
  • Patent number: 4633587
    Abstract: A garden pruner has a leaf spring 14 secured at its outer end to one of the handles (12a) and engaging the other handle (11a) at its inner end. A slider (15) on the one handle (12a) slidably engages the leaf spring and is movable to vary the length of the spring between the slider and the inner end of the spring and thereby vary the spring force and spring rate.
    Type: Grant
    Filed: June 4, 1985
    Date of Patent: January 6, 1987
    Assignee: Wilkinson Sword Limited of Sword House
    Inventor: Christopher R. B. Harrison
  • Patent number: 4563833
    Abstract: A fish holding device of the pliers type having longitudinally curved jaws with well rounded transversely extending grooves providing broad teeth having rounded surfaces to engage and hold a fish without seriously injuring the fish or piercing the scales or skin of the fish. The device has two identical jaw and handle members pivoted together between the jaw and handle members and yieldingly urged to the open or operative position. The jaws are relatively narrow, of the order of one half inch so that one of the jaw elements can be projected into the mouth of a fish and the other jaw element can engage the exterior of the fish's lower jaw so that the fish can be safely manipulated.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: January 14, 1986
    Inventor: Raymond U. Aucoin
  • Patent number: 4353240
    Abstract: A crimping tool includes a pair of arm members and a driving mechanism such as a pair of handles for moving the arm members. An elongated working jaw is mounted on each of the arm members, one of the working jaws having a female die and the other working jaw having a male die arranged thereon. The female die has a notch, and the male die has a base part and an elongated leading face spaced from the base part. A locking mechanism prevents the driving mechanism from returning to an open position before the driving mechanism is brought to a fully closed position. A resilient elastomeric block is provided in the tool to enable the driving mechanism to be brought to the closed position when an article to be crimped is located between the working jaws.
    Type: Grant
    Filed: January 15, 1980
    Date of Patent: October 12, 1982
    Assignee: Toolema AB
    Inventors: Hans Undin, Hans Wiener
  • Patent number: 4304158
    Abstract: A grip sleeve (1) from plastics or the like material, for a handle of a pliers or nippers of the kind which has at least one leaf spring (3) between both its handles for opening the pliers. To localize and retain the spring, the sleeve is formed with an elongate slot (4) on its side facing towards the opposite handle, the slot being open towards the opposite handle and is T-shaped, seen in cross section through the sleeve. At one end, the slot has its cross section, which is suited to the cross-sectional dimensions of the spring, freely exposed for inserting the spring in the crossbar (5) of the T. The stem (6) of the T forms the opening of the slot and the spring is thereby kept in place by flanges (7) on either side of this opening, formed by the T configuration.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: December 8, 1981
    Assignee: Aktiebolaget Bahco Verktyg
    Inventors: Bengt B. Brunosson, Lars Erlandsson
  • Patent number: 4281612
    Abstract: A pair of opposed arms extend in spaced parallel arrangement to each other, each of which arms include relatively short handle portions and relatively long gripping portions. The inner or opposed gripping edge of each arm includes a plurality of jagged teeth formed by relatively deep notches in the opposed edges of the arms. The teeth and notches are provided throughout substantially the entire gripping portion. The notches extend into the surface of the arms a distance of at least one-half inch. The arms are joined together by a connection about a pivot point positioned intermediate the handle portion and the gripping portion. A compression spring extends between the handle portions for normally biasing the gripping portions toward a closed position. One of the handles of the device receives one end of a tether which is attached at the other end to the boat.
    Type: Grant
    Filed: January 19, 1979
    Date of Patent: August 4, 1981
    Inventor: Homer A. Watts
  • Patent number: 4185523
    Abstract: A pair of pliers, having particular utility for removing a hook swallowed by a fish, is rendered buoyant by affixing a block of closed cell polymeric foam between the inner aspects of the handles.
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: January 29, 1980
    Inventor: Lloyd D. Kreitz
  • Patent number: 4074597
    Abstract: Pliers in which a spring which moves the pliers handles apart is carried in a recess in one handle, and has a free end sliding in a guiding track in the other handle and which free end moves away from the point of the handles when the same are moved together.
    Type: Grant
    Filed: November 30, 1976
    Date of Patent: February 21, 1978
    Assignee: AB Bahco Verktyg
    Inventor: Conny Erik Jansson
  • Patent number: 3996822
    Abstract: A tool including a handle, a movable jaw pivotally mounted on the handle, and a spring which biases the movable jaw. The connection between the spring and the movable jaw involves a keyhole cut in the jaw and a neck and an enlarged head on the end of the spring which head can lock into the keyhole.
    Type: Grant
    Filed: February 4, 1976
    Date of Patent: December 14, 1976
    Assignee: Parker Manufacturing Co.
    Inventor: Angelo T. Battista