With Means Requiring A Completion Of Travel Of Jaw Movement Patents (Class 81/313)
  • Patent number: 8286461
    Abstract: The invention relates to a pair of hand-operated pliers (1), in particular pressing pliers, with jaws (6, 7) and hand levers (4, 5), wherein the jaws (6, 7) are pivotable around a preferably common rotational axis (x). Furthermore, one hand lever (5) is connected by a joint to one of the jaws (7), and a pressure support is located between the hand levers (4, 5) for the formation of a toggle (K). In order to further improve a tool of this type, particularly with respect to the design of the pressure support, it is proposed that the pressure support consist of a support roller (18) arranged on one hand lever (4), and of a curved section (19) which is attached to the other hand lever (5) and which works together with the support roller (18).
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: October 16, 2012
    Assignee: Rennsteig Werkzeuge GmbH
    Inventors: Horst Hofmann, Thomas Wagner, Ralf Legler, Georg Holland-Moritz
  • Patent number: 8272300
    Abstract: A hand tool articulating apparatus has a pair of elongate members coupled for articulation about a pivot axis. Each elongate member has a clamping jaw on one side of the pivot axis and an arm extending to a handle on the other side of the pivot axis. One of the arms extends from the pivot axis along a first axis over a first distance to a first loop extending outwardly from the first axis and away from the other of the arms. The other of the arms has a first portion and a second portion. The first portion extends along a second axis from the pivot axis a shorter distance than the one arm. The second portion extends inclined to the second axis along a third axis away from the one arm to a second loop. The second loop extends outwardly from the third axis away from the pivot axis.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: September 25, 2012
    Assignee: Dr. Slick Company
    Inventor: Stephen M. Fournier
  • Patent number: 7954356
    Abstract: A PEX crimping tool includes four rigid links pivotally coupled together in a modified four-bar linkage arrangement. The first link has a first jaw with semicircular work face, a first handle and an elongated slot between the jaw and handle. The second link is pivotally connected with the first link at a first pivot and includes a second jaw with semicircular work face. The third link is pivotally connected with the second link at a second pivot and includes a second handle remote from the second pivot. The fourth link has a first end pivotally connected to the third link at a third pivot and includes a second end connected to the first rigid link so as to swing and move with respect to the first link about a fourth pivot movable along the elongated slot. The tools are designed to crimp ASTM F 1807 rings.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: June 7, 2011
    Assignee: Electroline Corporation
    Inventors: Robert M. Erbrick, Joseph W. Homacki
  • Patent number: 7363799
    Abstract: A jawset for crimping and punching an associated clamping workpiece has a pair of spaced apart side plates, a pair of pivot pins holding a pair of jawarms between the side plates, tooth members formed on the jawarms to crimp an associated clamp ring workpiece in a first direction, and a punch member slidable in the jawset relative to the jawarms to punch the associated workpiece in a second direction transverse the first direction. In one form, a timing disk is provided extending between the jawarms and through the slidable punch member. A biasing member is provided for urging the jawarms in an opening direction opposite the crimping direction. A workpiece alignment area is defined by a region of the spaced apart side plates for enabling relative alignment between the jawset and the associated workpiece. In a further embodiment, a pair of auxiliary side plates are carried adjacent ruggedized side plates for enabling an alignment area without adding undue weight or cost to the jawset.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: April 29, 2008
    Assignee: Emerson Electric Co.
    Inventors: James E. Hamm, Richard W. Ballas
  • Patent number: 7155954
    Abstract: Pliers for crimping work pieces include a pliers head, a first pivot jaw (4) and a second pivot jaw (3). A common joint (5) pivotally connects the first and second pivot jaw (4, 3). Two dies together form a crimping die (8). A first handle (2) is connected to the first pivot jaw (4). The first handle (2) is divided into at least a first portion (21) and a second portion (22). The first portion (21) is designed as a plate. A second handle (1) is connected to the second pivot jaw (3). The first handle (2) and the second handle (1) are movable with respect to one another and operable to crimp the work piece in a few crimping steps. A locking mechanism (28) includes a tooth segment (29), and it serves to attain a defined closed position of the dies. The tooth segment (29) is designed as one piece with the first portion (21). A stop mechanism (31) includes at least two stops, and it connects the first portion (21) and the second portion (22) in a plurality of different angle positions.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: January 2, 2007
    Assignee: Wezag GmbH Werkzeugfabrik
    Inventor: Kurt Battenfeld
  • Patent number: 7105004
    Abstract: Locking and releasing apparatus for operating a medical device includes a handle and a lever member coupled to the handle for grasping engagement by an operator. The lever member is moveable in opposite directions relative to the handle. A locking and release mechanism operably connects the lever member to a force transmitting member for operating the medical device at a location distant from the handle. The locking and release mechanism locks movement of the force transmitting member in one direction after movement of the lever member in a locking direction. The locking and release mechanism releases movement of the force transmitting member in the one direction after opposite movement of the lever member in a releasing direction. The lever member operates the locking and release mechanism for releasing the movement of the force transmitting member in the one direction substantially upon changing movement of the lever member from the locking to the releasing direction.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: September 12, 2006
    Assignee: Start LLC
    Inventors: Paul Dicesare, Jeffrey P. Radziunas
  • Patent number: 6948351
    Abstract: Tongs comprising a four link mechanism (12, 20, 22, 30) wherein the links are pivotally connected together by means of parallel pivot joints (23?, 24?, 31?, 32?), wherein the link mechanism includes two mutually connected links (20, 30) which define therebetween an angle that approaches 180┬░ at the closing end position of the tongs, and wherein the length of one (30) of said two links is adjustable and includes two parts that are moveable in the longitudinal direction of the link, wherein the first (36) of said parts includes a slot (51) for guiding a a shaft (31) carried by said second part (70) and belonging to the pivot joint of the adjustable link (30).
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: September 27, 2005
    Assignee: Pressmaster AB
    Inventor: Mats Norin
  • Patent number: 6820326
    Abstract: A compression assembly tool having multiple split bases for attaching connectors of different sizes to corresponding coaxial cables of different dimensions by compressing the connectors axially. The tool uses a light rigid O-frame and at least two pairs of split base supports located at different distances from a compression plunger driven by a lever handle. The handle is spring-loaded to the open position, but is held in the closed position by a wire bail for storage. The pairs of split base supports have annular bearing surfaces of different diameters that support the back of different connectors over a full 360 degrees. The split base supports are pivotally attached to the body, are held closed by a spring and are easily opened by squeezing push surfaces located on the split base supports towards each other to pivot the split base supports to the open position.
    Type: Grant
    Filed: October 5, 2002
    Date of Patent: November 23, 2004
    Assignee: Capewell Components Company, LLC
    Inventors: Andrew J. Tarpill, Tadeusz Zagula
  • Patent number: 6732393
    Abstract: A pair of pin press-connecting pliers. The pliers include a first handle and a second handle pivot connected via a connecting seat. The first handle is provided on the inner side thereof with a guiding portion. A first press-connecting portion is provided in the guiding portion, and a linking member connects the first press-connecting portion with the second press-connecting portion. A second press-connecting portion is fixedly provided on the tailing end of the guiding portion via a die block. The connecting seat has at least a concave portion at the press connecting area of the first and the second handles for resting a wire thereon, and has a knife provided on a corresponding handle for peeling or cutting wire in cooperation with the concave portion.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: May 11, 2004
    Assignee: Hanlong Ind. Co., Ltd.
    Inventor: Chien-Chou Liao
  • 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: 6629443
    Abstract: This invention provides an improved crimp tool. The improved crimp tool includes a fixed jaw assembly consisting of two connected halves and a chamber therebetween, wherein one end of the fixed jaw assembly is a fixed jaw and the other end is a first handle, a movable jaw assembly positioned in the chamber, wherein the movable jaw assembly comprises a movable jaw pivotally mounted thereon; a second handle having one end pivotally connected to the movable jaw assembly; a connecting rod positioned in the chamber and the connecting rod having one end pivotally connecting to the second handle and the other end connecting to the fixed jaw assembly; and a ratchet mechanism installed between the fixed jaw assembly and the second handle.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: October 7, 2003
    Inventor: Yen Chao Chin
  • Patent number: 6508149
    Abstract: Pliers with a first operating jaw and a first plier handle fixed thereto, have a second operating jaw mounted pivotably on the first operating jaw, and have a second plier handle which is articulated on a section of the second operating jaw. The section is oriented towards the rear plier end, having a connecting element between the first and second plier handles for the purpose of forming a toggle lever, and has a catch which is arranged at the front end of the second plier handle and is intended for preventing the plier handles from spreading apart before they have reached their closed position, the catch engaging, for this purpose, in a row of teeth. The row of teeth is provided on the second operating jaw.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: January 21, 2003
    Assignee: Weidm├╝ller Interface GmbH & Co.
    Inventors: Christian Heggemann, Armin Herzog, Thorsten Bornefeld
  • Patent number: 6499331
    Abstract: A parts stamper which includes a pair of jaw members, including at least one movable jaw member. The movable jaw member(s) include(s) a cam bearing. The parts stamper includes an actuator which is coupled to a cam element. The cam element cooperates with the cam bearings of the jaw member(s) to cause the jaw members to open and close. The jaw members include tool seats in which various tools can be secured, including an anvil and a number backing plate.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: December 31, 2002
    Assignee: PHD, Inc.
    Inventors: Steven M. Moilanen, Bruce D. McIntosh
  • Patent number: 6474130
    Abstract: Pliers for crimping work pieces include a pliers head and two pivot jaws (3, 4) being arranged in the region of the pliers head. A common joint (5) pivotally connects the two pivot jaws (3, 4). Two dies forming a crimping die (8) for crimping the work piece are arranged at the two pivot jaws (3, 4). Two handles (1, 2) are connected to the pivot jaws (3, 4), and they each include an end portion (20, 23) facing away from the pliers head. At least one of the handles (1, 2) is divided into at least two portions (21, 22). The handles (1, 2) are designed and arranged to be movable with respect to one another and to be operable to crimp the work piece in a few crimping steps. One portion (22) of the divided handle (1, 2) is coupled to the other portion (21) in a plurality of different angle positions each corresponding to one crimping step in a way that the end portions (20, 23) may be held and operated by the fingers of one hand of the operator in each angle position of each crimping step.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: November 5, 2002
    Assignee: Wezag GmbH Werkzeugfabrik
    Inventor: Kurt Battenfeld
  • Patent number: 6324886
    Abstract: A parts stamper which includes a pair of jaw members, including at least one movable jaw member. The movable jaw member(s) include(s) a cam bearing. The parts stamper includes an actuator which is coupled to a cam element. The cam element cooperates with the cam bearings of the jaw member(s) to cause the jaw members to open and close. The jaw members include tool seats in which various tools can be secured, including an anvil and a number backing plate.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: December 4, 2001
    Assignee: PHD, Inc.
    Inventors: Steven M. Moilanen, Bruce D. McIntosh
  • Patent number: 6286358
    Abstract: Pliers for crimping work pieces include a first stationary handle (1) and a second movable handle (2). The first and second handle (1, 2) are designed and arranged to be movable with respect to one another and to be operable by one hand. A first pivot jaw (3) is connected to the first stationary handle (1) to form a stationary pliers portion. A second pivot jaw (4) is connected to the second movable handle (2). A common joint (5) pivotally connects the stationary pliers portion and the second pivot jaw (4). A first die (35) is arranged at the first pivot jaw (3). A second die (36) is arranged at the second pivot jaw (4). The first and second die (35, 36) together form a crimping die (8), and they are designed and arranged to contact one another in a closed position of the pliers in a separation plane (26).
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: September 11, 2001
    Assignee: WEZAG GmbH Werkzeugfabrik
    Inventors: Horst Beetz, Kurt Battenfeld
  • Patent number: 6176116
    Abstract: A crimping tool for crimping lead end sleeves, contact sockets, or plugs on the electrical conductors, two crimping jaws arranged in a tool head section for performing crimping, pivotably mounted and axially fixed in the tool head section, and forming a crimping aperature of adjustable cross-section, the crimping jaws on their outer peripheral surfaces receiving a pivot lever and are bringable into and out of a crimping position by a pivoting drive movement of the pivot lever, a toggle lever mechanism driven by the handles and effecting the pivoting drive movement of the pivot lever, for a force-stroke compensation between parts of a force transmission system, the crimping jaws in a region of their crimping profile being formed by a die surface and a sliding surface, the die surfaces of the crimping jaws forming a die profile of closed shape in all crimping position within an adjustable crimping range, the sliding surface of each of the crimping jaws being in planar contact with the die surface of an adjacent
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: January 23, 2001
    Assignee: Rennsteig Werkzeuge GmbH
    Inventors: Edgar Wilhelm, Horst Hofmann
  • Patent number: 6164106
    Abstract: A pressing device (1, 111), in particular for joining a pipe (23) with a press fitting (24), has at least two pressing jaws (17, 18, 21, 22, 122, 123, 124, 125, 126) and a drive (7) for moving the pressing jaws (17, 18, 21, 22, 122, 123, 124, 125, 126) or a part thereof relative to one another from an open position into a final pressed position, such that at least one sensor (36, 37, 38, 39, 40, 41, 42, 51, 151, 152) for sensing the final pressed position of the pressing jaws (17, 18, 21, 22, 122, 123, 124, 125, 126) is arranged in the region of the pressing jaws (17, 18, 21, 22, 122, 126), and such that an indicating device (43), which generates an externally perceptible indicating signal when the final pressed position is or is not reached, is associated with the sensor (36, 37, 38, 39, 40, 41, 42, 51, 151, 152).
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: December 26, 2000
    Assignee: Novopress GmbH Pressen und Presserkzeuge & Co. KG
    Inventors: Xuan Luong Nghiem, Gert Lohmann
  • Patent number: 6125684
    Abstract: A parts stamper which includes a pair of jaw members, including at least one movable jaw member. The movable jaw member(s) includes a cam bearing. The parts stamper includes an actuator which is coupled to a cam element. The cam element cooperates with the cam bearings of the jaw member(s) to cause the jaw members to open and close. The jaw members include tool seats in which various tools can be secured, including an anvil and a number backing plate.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: October 3, 2000
    Assignee: PHD, Inc.
    Inventors: Steven M. Moilanen, Bruce D. McIntosh
  • Patent number: 6026671
    Abstract: Pliers (1) for crimping workpieces include a pliers head (2) including at least two cover plates (6, 7) and a recess (3), the cover plates (6, 7) having rectilinear channels arranged therein. A stationary crimping (4) die is arranged inside the recess (3) of the pliers head (2). A movable crimping die (5) is arranged inside the recess (3) of the pliers head (2). A guiding element (22) includes two spaced apart guiding projections (27, 28) and it defines a line of movement (33), the guiding element (22) including an opening (39) for its stroke (34), being connected to the movable crimping die (5) and linearly guiding the movable crimping die (5) in the rectilinear channels being arranged in the cover plates (6, 7). A bearing (37) is arranged at the cover plates (6, 7) and in the line of movement (33) between the two guiding projections (27, 28) of the guiding element (22) to enlarge the distance (24) between the two guiding projections (27, 28).
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: February 22, 2000
    Assignee: Wezag GmbH Werkzeugfabrik
    Inventor: Kurt Battenfeld
  • Patent number: 5983489
    Abstract: A terminal coupling pliers comprises a guiding block, a primary molding portion, and a secondary molding portion on the front side of a primary hand-grip, and cone-shaped grooves on the adjacent surface of the primary molding portion and the secondary molding portion, a secondary hand-grip pivoted on the central portion of the primary hand-grip, and a pushing block pivoted on the front side of the secondary hand-grip and being arranged within the guiding block wherein the pushing block having a terminal insertion hole on front side thereof. The pushing block can move toward the cone-shaped grooves as the primary and secondary hand-grips are pushed closely. During its application, the junction of the terminal coupled with the signal line is enclosed with a ring and inserted into the terminal insertion hole. By closing the primary hand-grip and the secondary hand-grip, the ring will be pushed, deformatively by the pushing block, against the molding hole to lock the terminal and the signal line firmly.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: November 16, 1999
    Assignee: Hanlong Industrial Co., Ltd.
    Inventor: Beam-Chi Jee
  • Patent number: 5870925
    Abstract: A hand tool (10) is provided for crimping an electrical terminal onto a conductor. The tool includes a frame (12) having a fixed crimping tool (14) secured at one end and a movable crimping tool (16) arranged to slide along a linear path (20) within a guideway (48) in the frame (12) toward and away from the fixed crimping tool (14). A lever (18) is pivotally coupled to the movable crimping die (16) by a drive link (144) and three pivotal attachments (128, 146, 152). The drive link (144) includes a ratchet surface (188) in engagement with a pawl (196) pivotally attached to the lever (18) for compelling continued movement of the lever once a crimping operation has begun.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: February 16, 1999
    Assignee: The Whitaker Corporation
    Inventors: Michael Morris, Richard Lloyd Schaeffer
  • Patent number: 5842371
    Abstract: A wire crimper having a body with a fixed jaw, a lever, a movable jaw pivoted between the body and the lever, a ratchet member coupled between a body and a lever thereof, a release plate pivoted to the lever and forced by a spring into engagement with the ratchet, and an adjustment mechanism for adjusting the angular position of a ratchet member relative to the body, the adjustment mechanism including an eccentric shaft to which the ratchet member is pivoted, a fixed stub locating rod at the body, an adjustment wheel axially movably supported on the eccentric shaft and adapted for turning the eccentric shaft to change the angular position of the ratchet member, and a spring washer retained to the eccentric shaft and forcing adjustment wheel into engagement with the fixed stub locating rod to stop the adjustment wheel from rotary motion.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: December 1, 1998
    Inventor: Gwo-Jiang Liaw
  • Patent number: 5839316
    Abstract: A hand-held crimping tool is disclosed having an air cylinder which retains thereto a head member, and has a moveable piston which is attached to a cam member. The cam member is receivable through the head member, and a crimping tool is fixed to the head member, whereby the cam member is cooperable with the crimping tool to move die surfaces towards one another for the crimping actuation of a wire terminal. The head member includes a pawl assembly, whereby the pawl member is cooperable with a ratchet surface provided on the cam member, whereby the cooperation of the ratchet and pawl determines the axial movement of the cam member relative to the head member, which also determines the crimping force exerted on the terminals to be crimped.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: November 24, 1998
    Assignee: The Whitaker Corporation
    Inventors: Christopher James Kolivoski, Richard Lloyd Schaeffer, Jr., Michael Morris
  • Patent number: 5743131
    Abstract: There is disclosed a tool for connecting a cable fitting to the end of a coaxial cable. The tool is made up of one or more dies with a cavity therein, a carrier chuck which is axially spaced from the die surfaces to support the fitting in relation to the end of the cable, and a handle pivotally mounted to cause axial movement of the carrier chuck. The carrier chuck is pushed toward the die surfaces to axially force the fitting into the die cavity to reduce the circumference of one end of the fitting into a generally conical configuration securely engaging the cable. A radial ratchet mechanism on the handle prevents the carrier chuck from moving away from the die until the fitting has been fully and properly secured to the cable. The dies are specially shaped to have a guiding portion which smoothly and consistently guides the fitting into proper relation to the dies, and a stop limiting portion to prevent the fitting from being forced too far into the die.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: April 28, 1998
    Assignee: ICM Corporation
    Inventors: Randall A. Holliday, Ricky A. Yates
  • Patent number: 5649444
    Abstract: A tool is provided with two jaws (16, 17) which are movable between an open position and a closed position, means (19, 20, 22) for transmitting movement to the jaws, and a marking device (3-8, 10) for the indication of a completed jaw movement and/or the prevention of a premature interruption of an initiated jaw movement. The marking device includes a cam (3) and a cam follower (7) which are carried by an associated movement transmitting means or an associated jaw. The cam follower (7) projects outwardly of and is mounted for movement along a U-shaped or V-shaped slot (10) which is arranged in an associated movement transmitting means or jaw adjacent the cam and the legs of which extend obliquely away from the cam (3) and the base-part of which is at least partially covered by the cam when the jaws are in a position between the open position and the closed position. The cam surface (6) is arcuate and smooth or toothed.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: July 22, 1997
    Assignee: Pressmaster Tool AB
    Inventors: Mikael Nilsson, Mats Norin
  • Patent number: 5596800
    Abstract: A crimping tool for connecting a cable fitting to the end of a coaxial cable is made up of one or more die members having tapered die surfaces, a chuck which is axially spaced from the die surfaces to support the fitting in loosely assembled relation to the end of the cable, and a handle operates through a ratchet mechanism to cause axial movement of the chuck toward and away from the die surfaces and axially force the fitting into the die cavity so as to uniformly reduce the circumference of one end of the fitting into a generally conical configuration snugly engaging the cable.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: January 28, 1997
    Assignee: Cable Ready, Inc.
    Inventors: Randall A. Holliday, Donald Kesinger
  • Patent number: 5509291
    Abstract: A crimping tool includes first and second jaws (1, 2) which are journalled at a first pivot point (5) for pivotal movement relative to one another. A forward end of a first handle (6) is rigidly connected to the first jaw (1), while a forward end of a second handle (7) is pivotally connected to the second jaw (2) at a second pivot point (8). A linkage construction (9) extends obliquely rearwards from a third pivot point (10) located on the second handle (7) rearwardly of the second pivot point (8), up to a fourth pivot point (11) on the first handle (6). The distance (D) between the first and the second pivot points (5, 8) is 0.30-0.35 times the distance (A) between the first and the fourth pivot points (5, 11), the distance (C) between the second and the third pivot points (8, 10) is 0.20-0.25 times the distance (A) between the first and the fourth pivot points (5, 11), and the distance (B) between the third and the fourth pivot points (10, 11) is 0.62-0.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: April 23, 1996
    Assignee: Pressmaster Tool AB
    Inventors: Mikael Nilsson, Mats Norin
  • Patent number: 5344061
    Abstract: A ratchet assembly for a medical instrument having a handle and a trigger member for operating the medical instrument, the trigger member being movable relative to the handle between a first position and a second position and being biased by a biasing member toward the first position, the ratchet assembly comprising a rack disposed in the handle, an engagement member for engaging the rack, slidably disposed in the handle relative to the rack and connected to the trigger member so that displacement of the trigger member slides the engagement member relative to the rack, the engagement member being biased into engagement with the rack so that, as the trigger is displaced from the first position to the second position, the engagement member engages the rack in a plurality of positions so as to hold the trigger member at a desired point between the first position and the second position against the biasing member, and a cam member, arranged in the handle, for disengaging the engagement member from the rack when t
    Type: Grant
    Filed: August 3, 1993
    Date of Patent: September 6, 1994
    Inventor: Lawrence Crainich
  • Patent number: 5280716
    Abstract: A tool for crimping a terminal to an end of an electrical conductor has a movable fulcrum which reduces hand force required to operate the crimping tool. The tool includes main body having a handle end and a first jaw disposed remote from the handle end. A second jaw is pivotally connected to the main body between the handle end and the first jaw. The a second jaw cooperates with the first jaw to perform the crimping as the second jaw is pivoted toward the first jaw. A movable handle is operably connected to the second jaw to pivot the second jaw toward the first jaw. A driver link has a first end pivotally connected to the main body, and a second end of the driver link has a slidable connection with the movable handle. The slidable connection includes a pivot pin which is slidable in a slot defined in the movable handle.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: January 25, 1994
    Assignee: The Whitaker Corporation
    Inventors: Dale R. Ryan, Steven T. Merkt, David B. Weaver, Richard L. Schaeffer
  • Patent number: 5104397
    Abstract: A latching mechanism for forceps including first latch portion on one forcep handle and a second latch portion on the other forceps handle and a bias spring for placing the handles, and thus the jaws, in a first predetermined spacing. The first latch portion has a cam surface, a shelf and a slot. The second latch portion has a transverse projection which engages the cam surface as the handles close and then engages the shelf and upon further closing of the handles and then springs through the slot to disengage the latching mechanism and return the handles to the original position controlled by the bias spring. The first position allows a surgical assistant to load an aneurysm clip into the jaws of the forceps. The second predetermined position allows the surgical assistant to partially close the handles sufficient to hold the aneurysm clip firmly in place. The surgeon then takes the forcep and inserts the aneurysm clip by further closing the handles and releases the latching mechanism by relaxing the grip.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: April 14, 1992
    Assignee: Codman & Shurtleff, Inc.
    Inventors: Gilson S. Vasconcelos, John A. Santangelo
  • Patent number: 5094097
    Abstract: A hand crimping tool includes a fixed mandrel (6), a moveable mandrel (8), and an operating mechanism (16) for the moveable mandrel (8). The operating mechanism (16) comprises a rotatable lever (18) having a cam surface (22A), which engages a cam surface (8B) on the moveable mandrel (8). The lever (18) also has a ratchet (24) engageable by a pawl (b 26). The ratchet teeth and the cam surface are formed so that the pawl (26) will only release when the cam surface (22A) has reached a predetermined position.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: March 10, 1992
    Assignee: Miles Raystone Ltd.
    Inventors: William H. Tooth, deceased, Alan Roper
  • Patent number: 5042286
    Abstract: In a manually operated pliers-type tool comprising an elongated tool body with a part defining an operative section with two carrier means for operative means such as crimping die members, and a longitudinal operating lever, which is journalled to the tool body and together therewith defines a reverse handle arrangement, projects that part of the tool body and tool, which defines the operative section, in the direction from which the operating lever is attached to the tool body, and the operating lever terminates, in its folded-down position, before that projecting part, and is level therewith. In a preferred embodiment, one of the carrier means is embodied by at least one rocker which is pivotably mounted in the operative section with the aid of a resilient means, so that the respective operative means may recede to a certain degree under the effect of predetermined load.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: August 27, 1991
    Assignee: C.A. Weidmuller GmbH & Co.
    Inventors: Ulrich Wiebe, Hartmut Schmode, Karl-Heinz Siemens, Jorg Gondermann, Hans Undin
  • Patent number: 5012666
    Abstract: A crimp tool includes a first handle, a head member pivoted to the front portion of the first handle to serve as a clamping member, and a second handle pivoted to the head member. The second handle is connected to the first handle through a mechanism which urges the second handle and the head member to the releasing position thereof. An adjustment member for the jaws of the crimp tool includes an adjustment screw rod and two nuts to adjust the position of a pivot pin in an oblong pivot hole which pivots the head member to the first handle member so that conductors of different cross-sections can be crimped effectively.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: May 7, 1991
    Inventors: Ching-Wen Chen, Ching-Jen Chen
  • Patent number: 4829805
    Abstract: A ratchet crimp tool has upper and lower handles joined by a ratchet member. An upper jaw is fixed to the upper handle. A lower jaw is pivotally connected to both handles. The jaws have attachment elements disposed in facing relation. Upper and lower crimp nests are slidably mounted on the attachment elements. The crimp nests have arms which define a channel, which in turn meshes with the associated attachment element in interlocking engagement. Ball detents are mounted in holes in the jaws. The detents engage the crimp nests to retain them on the jaws. An interlocking pin and slot arrangement is provided to insure proper orientation of the nests on the jaws.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: May 16, 1989
    Assignee: Ideal Industries, Inc.
    Inventor: Terry J. Koehn
  • Patent number: 4825735
    Abstract: A pliers-type tool with two handles has a parallel mechanism carrying two carrier members for working jaws. The mechanism comprises two cross-wise arranged guide lever means and one of the carrier members or one of the guide lever means is merged with one of the handles to a rigid tool body. A resilient member may be interposed, also in tools not having a parallel mechanism, between a link connecting the two handles and a counter-element in order to compensate for inaccuracies and/or to enable an extra push at the end of a closing movement of the handles.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: May 2, 1989
    Assignee: C. A. Weidmuller GmbH & Co.
    Inventor: Hans Undin
  • Patent number: 4794780
    Abstract: A crimper for crimping cable terminals, cable connectors, and similar materials to electric conductors, optical conductors, etc. has two handles (2 & 7) that can be displaced toward each other and two crimping jaws (3 & 5), whereby one crimping jaw (5) is mounted so that it can move on the other (3). The moving handle (7) is mounted on an articulated support (19) on the moving crimping jaw (5). A toggle-lever drive mechanism consists of a pressure-application arm (8) and of a toggle-lever section (18) on the moving handle, whereby the ratio between lengths is at least approximately 2:1. The closing motion of the toggle-lever drive mechanism is terminated just before the extended state is attained by stops (24 & 25). At least one articulated support (19 or 20) can be displaced to vary the pressure. There is an automatic locking mechanism with a resiliently movable but stationary latch (11) that prevents the crimper from opening before crimping jaws have closed.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: January 3, 1989
    Assignee: WEZAG GmbH Werkzeugfabrik
    Inventor: Kurt Battenfeld
  • Patent number: 4787279
    Abstract: A tool with two elongated handles and two jaws operatively connected to the handles is provided with a mechanism for preventing premature opening of the handles and jaws. The mechanism comprises a pawl operating as a bistable rocker and engaging, with one or with two engagement means, an engagement member defined by two projections delimitating an operational area, or by at least one row of teeth with which each of the two engagement means is alternately engageable, so as to prevent premature interruption of the closing movement and preferably also of the reverse opening movement of the handles and of the jaws.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: November 29, 1988
    Assignee: C. A. Weidmuller GmbH & Co.
    Inventor: Hans Undin
  • Patent number: 4608888
    Abstract: The invention relates to a tool for crimping, cutting, pressing or the like, having a tool head and gripping levers arranged on the latter for actuating the tools and also, in order to fix the final pressure required for pressing, having a positive lock which is engaged between the gripping levers and designed as a ratchet, having a toothed segment which is provided on one gripping lever and a pawl on the other gripping lever, which pawl engages in the toothed segment, with the mounting of the pawl (6) in the gripping lever (2) being adjustable in order to change the final pressure required for pressing.
    Type: Grant
    Filed: March 27, 1985
    Date of Patent: September 2, 1986
    Inventor: Reiner Rommel
  • Patent number: 4602535
    Abstract: A mechanism for preventing premature opening of a tool having two elongate handles comprising a carrier having a row of teeth at one edge and a spring-affected, pivotable pawl co-operating with the row of teeth. The pawl operates as a bistable rocker swingable by end stops at both ends of the row of teeth from a first lateral position for engagement with the row through an instable middle position into a second engagement-free lateral position. The two ends of the spring affecting the pawl and a pivot pin on which the pawl is mounted lie along one straight line when the pawl passes through the instable middle position.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: July 29, 1986
    Assignee: C. A. Weidmuller GmbH & Co.
    Inventors: Hans Wiener, Hans Undin
  • Patent number: 4561282
    Abstract: A diminishing arm toggle linkage has the work site within the toggle geometry and thereby provides exponential force enhancement. In preferred embodiments the mode of operation shifts on demand from a light-load-pivoting mode to a heavy-load-rolling element mode thereby easing operation and reducing friction and wear so as to provide prolonged durability and continuing dimensional accuracy. When the toggle linkage is embodied in a crimping tool an optional anti-reversing ratchet assembly prevents the tool from opening during use until a crimp is completed.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: December 31, 1985
    Inventor: Edward L. Hadden, Sr.
  • Patent number: 4462404
    Abstract: Forceps have two branches movable opposite one another against a spring force and with a lock that fixes the distance between the branches. The lock engages as the two branches approach one another and is released by closing the branches further. This locking mechanism includes a locking arm mounted between the branches with a free end that rides between a sliding surface located on the inside wall of one of the branches and a guide member. The free end carries a locking element that engages a locking step formed on the sliding surface. The guide urges the locking element against the locking step and then, with a further closing movement of the branches, directs the locking arm free end to its initial, fully opened position. The guide has an enlarged opening that allows the free end to fall back onto the sliding surface.
    Type: Grant
    Filed: January 22, 1982
    Date of Patent: July 31, 1984
    Assignee: Vormals Jetter & Scheerer Aesculap-Werke Aktiengesellschaft
    Inventors: Theodor Schwarz, Karl Freyer, Manfred Theilmann
  • Patent number: 4448194
    Abstract: An actuating mechanism is provided for a hand-operated surgical instrument having at least one operating member. The operating member is engaged by or extends from a flexible pusher member wound at least partially around the circumference of a drum and secured thereto. A pinion is connected to the drum for rotation therewith and is driven by a gear segment on a handle that is pivotally monted to the instrument. A full stroke compelling mechanism is associated with the drum for preventing return of the handle to the unactuated position unless and until the operating member has been moved through the full design range of movement.
    Type: Grant
    Filed: February 3, 1982
    Date of Patent: May 15, 1984
    Assignee: Ethicon, Inc.
    Inventors: John DiGiovanni, Szabolcs M. Vigh, William P. McVay, Anthony S. Miksza, Jr.
  • Patent number: 4266419
    Abstract: A preferably circular cam driver coupled to one of a pair of pivotally coupled die carrying members and operated by drive means is cooperatively engaged with a cam member coupled to the other of the pair of die carrying members and which, in turn, is rotated by and exerts a force upon the cam driver to selectively move the work engaging portions of the die carrying members into engagement with a workpiece located therebetween.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: May 12, 1981
    Assignee: Thomas & Betts Corporation
    Inventor: Michael A. Grundfest
  • Patent number: 4189933
    Abstract: A pull-type fastener setting tool is provided comprising a pistol-shaped housing having an abutment on a barrel portion for engagement with one part of a fastener and which also includes a hand-grip portion, a pulling device slidable in the housing and engageable with a pulling stem of the fastener, a rotatable handle mounted on the housing, and actuating means including a plate cam arranged to be rotated by means of the handle. The actuating means also includes a cam follower mounted on an arm pivoted on the pulling device, the arm being connected by a link which is pivoted at one end to the arm and at the other end to the housing at a remote part of the hand-grip portion. The cam follower is capable of reciprocating along an arc of large radius in response to turning of the handle without moving significantly out of alignment with the pulling device.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: February 26, 1980
    Assignee: USM Corporation
    Inventor: David J. Holloway
  • Patent number: 4170154
    Abstract: The pawl means portion of a pawl and ratchet type full stroke compelling mechanism for use preferably in hand tools and the like is arranged for translatable movement towards and away from the ratchet means of the mechanism to permit a reversal of the direction of movement of the handles of the tool prior to full opening while recommitting the device to a full closure stroke from the point of reversal, thereby avoiding the necessity for requiring the handles of the tool to be opened to their fully open position before closure can again be reinstituted.
    Type: Grant
    Filed: December 6, 1977
    Date of Patent: October 9, 1979
    Assignee: Thomas & Betts Corporation
    Inventor: Hyman Izraeli
  • Patent number: 4158302
    Abstract: A selectively positionable pivot coupling is provided between a full stroke compelling mechanism and either one or both of the tool handle members between which such mechanism is coupled to permit a re-opening of the handle members at preselected points in the closure stroke of the tool.
    Type: Grant
    Filed: December 23, 1977
    Date of Patent: June 19, 1979
    Assignee: Thomas & Betts Corporation
    Inventor: Francis A. O'Loughlin
  • Patent number: 4048877
    Abstract: A tool with a variable force transmission ratio between the handles, which receive the driving force, and the working jaws adapted to perform the desired work, comprising a first stationary working jaw and a second movable working jaw journalled in a first pivot point to the first jaw, having an elongated cam profile arranged beyond said first pivot point and with the exception of eventual adjustments fixedly connected with and extending essentially in the same direction as the first jaw, the second jaw being prolonged beyond said first pivot point by an extension to which an operative means for receiving the driving force is journalled in a second pivot point spaced from the first pivot point, which operative means is rigidly connected to contact means arranged in such a manner that when the operative means are actuated by a driving force the contact means is pressed against the cam profile and made to follow it.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: September 20, 1977
    Assignee: Pressmaster Ltd.
    Inventor: Hans Undin
  • Patent number: RE30613
    Abstract: A shearing tool for synthetic resin tubes, in which a lower jaw is connected to the leading end of an upper handle portion, a lower handle portion is pivoted to said lower jaw at its leading end, an opening is provided in forward portion of said upper handle portion extending therefrom to the leading end of said lower jaw, an arcuate tube receiving recess is provided in the upper surface of said lower jaw, said shearing blade is pivoted in an intermediate position of the length to said upper handle portion within said opening, said shearing blade is provided at the rear and lower end with an engaging pawl, a rocking bar having notches in the upper surface is pivoted at one end to the leading end of a lower handle portion, a slot is provided in the rear portion of said shearing blade, a connection link has at one end a pin freely received within said slot and is pivoted at the other end to an intermediate position of the length of said rocking bar, a spring is provided for urging said rocking bar against said
    Type: Grant
    Filed: April 6, 1979
    Date of Patent: May 19, 1981
    Assignee: Matsuzaka Iron Works, Inc.
    Inventors: Masahiko Nakamura, Hidehiko Itou