And Spring-urged Latch Patents (Class 81/322)
  • Patent number: 6736031
    Abstract: A pair of pliers for disassembling a pipe-fastening clamp has two control members respectively having through holes. A control device is connected with the two control members and has two control tubular lines each inserted with a steel wire having one end inserted through the through hole of each control member. Each tubular line has one end provided with a positioning block and the other end fixed with a push member and the other end combined with two clamping blocks facing each other. The steel wire has one end fitted with a fixing member. Thus, the two clamping blocks are controlled to expand open the pipe fastening clamp for facilitating disassembling pipes.
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: May 18, 2004
    Inventor: Hsin Fa Kang
  • 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: 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: Weidmüller Interface GmbH & Co.
    Inventors: Christian Heggemann, Armin Herzog, Thorsten Bornefeld
  • Patent number: 6237449
    Abstract: A hand tool that is self-adjusting by alternately squeezing and relaxing the hand grip on the two handles, and that has substantially parallel jaws during closing adjustment. In one embodiment, the jaws have opposing gripping surfaces. In another embodiment, the jaws have opposing cutting blades. All of the operations, except the resetting of the adjustable jaw to a wide open position, can be accomplished with just one hand holding the tool.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: May 29, 2001
    Assignee: Tool Research Corporation
    Inventor: Henry Orlosky
  • Patent number: 6178855
    Abstract: Self adjusting pliers for grasping a workpiece include first and second plier members each including a handle portion, a jaw portion, and an intermediate portion therebetween. The self-adjusting pliers include a first pivot pin about which the first and second plier members pivot permitting the jaw portions to converge on a workpiece and grasp the workpiece in response to initial movement of the handle portions toward each other. The self adjusting pliers further include a second pivot pin about which the pliers pivot once pivoting has been terminated about the first pivot pin so as to permit a further grasping force to be applied to the workpiece in response to continued movement of the handle portions toward each other. The second pivot pin is closer to the jaw portions than the first pivot pin to allow for a greater mechanical advantage to be obtained. The self adjusting pliers also include a biasing spring for biasing the handle portions away from each other and the jaw portions away from each other.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: January 30, 2001
    Assignee: B!G Ventures, L.L.C.
    Inventors: Alexander Bally, Eric R. Colburn
  • Patent number: 6026716
    Abstract: A hand tool that is self-adjusting by alternately squeezing and relaxing the hand grip on the two handles; that has substantially parallel jaws during closing adjustment; that actually grips the work object with at least an 8-to-1 compound gripping leverage; and that can be locked onto an object when desired with a selectively light or strong grip. All of the operations, except the resetting the adjustable jaw to a wide open position, can be done with just the hand holding the tool and it can be made in the form of an adjustable plier, an adjustable wrench, or an adjustable pipe wrench, plus many other applications.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: February 22, 2000
    Assignee: Tool Research Corporation
    Inventor: Henry Orlosky
  • Patent number: 5408904
    Abstract: A hand tool that is automatically self-adjusting by alternately squeezing and relaxing the hand grid on the two handles; that has constantly parallel jaws at any adjustment; that actually grips the work object with at least an 8-to-1 compound gripping leverage; and that can be locked onto an object when desired with a selectively light or strong grip. All of the operations, except the resetting the adjustable jaw to a wide open position, can be done with just the hand holding the tool and it can be made in the form of an adjustable plier, an adjustable wrench, or an adjustable pipe wrench, plus many other applications.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: April 25, 1995
    Inventor: Ted Neff
  • Patent number: 5127918
    Abstract: A latching device for enabling pieces of tissue or foreign bodies to be held securely by medical forceps during a medical operation comprises two elongate spring members whose opposed ends are secured in closed, telescoping tubes which are hinged to the handles of a forceps. The forceps handles are elastically yielding to some degree and by closing them together the spring members are moved towards one another and are caused to hook together by means of butting faces. Hence the tissue or the like which the forceps has taken hold of is automatically held secure once the manual pressure on the handle has been relaxed. If the handles are pressed closer together, the hooked interengagement is released and the spring-loading in the forceps handles opens them and allows the forceps jaws to release the tissue or the like which is being held.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: July 7, 1992
    Assignee: Richard Wolf GmbH
    Inventor: Manfred Boebel
  • 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: 4961742
    Abstract: A surgical instrument for holding a suture needle is provided. The instrument includes handle portions shaped to accommodate the human hand, jaws formed to securely grasp a suture needle and a latching mechanism to hold the device closed so that the physician can concentrate on manipulation of the needle. The contoured shape of the handle portions improves the ability of the surgeon to grasp and manipulate the instrument under the adverse conditions encountered during surgery.
    Type: Grant
    Filed: March 24, 1989
    Date of Patent: October 9, 1990
    Inventor: Randall J. Torre
  • Patent number: 4823792
    Abstract: A clamping device which includes a pair of elongated members which are pivotably but releasably connected. A pivot mechanism exists between gripping ends and handle ends of the elongated members. Female and male members comprise a box hinge whereby the cam holds the elongated members in a secure but pivotable relationship between a closed position for the gripping ends and a maximum open position. If the elongated members are moved beyond the maximum open position, the male cam member can be separated from the female receptor member.
    Type: Grant
    Filed: May 11, 1987
    Date of Patent: April 25, 1989
    Assignee: Andrew Tool Company
    Inventors: David H. Dulebohn, David J. Ackland
  • Patent number: 4821610
    Abstract: A plier-like tool (11) having two plier-like members (13, 15) pivotally joined togther intermediate of their ends and having handle portions (17, 18) and swivel jaw members (29,30). An automatic locking mechanism (27) extending between the members permits an user to clamp the handle portions together so as to clamp the jaw members on an object (25) but holds the position so reached if the clamping action of the user is removed. A release device (65) is provided so that the jaw members may be opened up again. A compression spring (23) extending between the members (19, 20) assists in the opening of the jaw members. The swivel jaw members (29, 30) permit the user to rotate the plier-like members (13,15) relative to the object (25) being grasped.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: April 18, 1989
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: John W. Redmon, Jr., Fred Jankowski
  • Patent number: 4538485
    Abstract: A lockable plier-type tool having the lockable features selectively engageable and including handle flexibility and locking element positioning that enhances its gripping capabilities. The locking elements are also arranged and constructed so that the plier may conveniently be used in the conventional manner (i.e. without the locking feature) and may exhibit any desired jaw configuration.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: September 3, 1985
    Inventor: Tauno Saila