Pinion And Rack Patents (Class 81/358)
  • Patent number: 8056446
    Abstract: The invention is a ratcheting open ended wrench comprising a main body having an elongate primary handle portion and an upper stationary jaw element, a secondary handle opposed to the primary handle portion and having a binding surface at the top being pivotally attached to the main body, a tertiary handle pivotally attached to the main body having a gear element cooperating with a geared end of a connecting rod, the opposing end pivotally and slidably fixed to a lower movable jaw assembly, the lower movable jaw assembly being spring biased against the upper stationary jaw and positioned within a main body guide slot so that the secondary handle binding surface contacts the lower jaw assembly and activation of the secondary handle clamps the lower movable jaw assembly relative to the upper stationary jaw. Activation of the tertiary handle counteracts the lower movable jaw spring bias to open the jaws.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: November 15, 2011
    Inventors: Dale K Wheeler, Thomas J Wheeler
  • Patent number: 7406898
    Abstract: A hand held tool includes a slotted handle having a jaw end, a medial section, and a gripping end, the medial section including a slot having a gear tooth rack. An operative handle has a pinion gear end and a gripping end, with pinion gear being fixed with respect to the operative handle, and the pinion gear being positioned in the slot and having a toothed portion and a non-toothed portion. An operative jaw is slidably mounted with respect to the slotted handle to cooperate with the jaw of the slotted handle to group a workpiece, the operative jaw having one or more guide mechanisms to maintain the orientation of the jaw with respect to the slot as the jaw slides and as torque is applied to the operative jaw when a workpiece is gripped.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: August 5, 2008
    Inventor: Herbert L. Hall, Jr.
  • Patent number: 7191688
    Abstract: A hand held tool has a slotted handle having a jaw and at least one slot therein, the slotted handle defining a toothed rack within the slot; an operative handle having a jaw and a pinion gear, the pinion gear having at least one tooth suitably shaped to engage the toothed rack, the pinion gear being slidably movable along the slot; and, at least one post member for connecting the operative handle to the slotted handle.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: March 20, 2007
    Inventor: Herbert L. Hall, Jr.
  • 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: 6662691
    Abstract: An arresting device is pivotally mounted between two handles of a pair of pliers. The arresting device comprises a sleeve and a rod fitted into the sleeve. The sleeve and the rod are pivotally fastened at one end with the two handles. The sleeve has a receiving cell, a retaining piece disposed in the receiving cell, and a spring disposed between the retaining piece and a side wall of the receiving cell. The retaining piece is urged by the spring to retain the rod. The receiving cell is provided with a pin pivoted thereto such that the pin is corresponding in location to the movable end of the retaining piece, and that the pin can push away the retaining piece from the rod. As the pin is turned such that a recess of the pin is corresponding in location to the retaining piece, the movable end of the retaining piece is in the free state, thereby enabling the retaining piece to be urged by the spring to retain the rod.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: December 16, 2003
    Inventor: Hong-Chow Yu
  • Patent number: 6502482
    Abstract: The spring mechanism (12) of a one-hand actuated pliers consists of a spring (14) supported on both handles (2, 3), which is designed in such a way that the handles (2, 3) are separated at a distance from each other by rotating the handle (3) and wherein the movable handle (3) of the pliers can be moved by the spring to the widest open position of the jaws by rotating said handle (3), wherein a rotation support of the spring (14) is configured on one side of the handle (2) and the spring (14) rests on said side against a rotational stop (19) formed on the handle (2) when it is not actuated. When the movable handle (3) of the pliers is displaced to a closing position of the jaws in which a workpiece is gasped, the spring (14) is released from the rotational stop only if force is exerted when the cheeks of the jaws (5, 6) are grasping the workpiece.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: January 7, 2003
    Inventors: Ralf Putsch, Karl Putsch
  • Patent number: 6212978
    Abstract: A self-adjusting pliers has an upper arm with an upper jaw at a first end and an upper handle at a second end. A support extends downwardly from an intermediate location of the upper arm. The support has a first downwardly extending slot and a second downwardly extending slot that is parallel to the first downwardly extending slot and closer to the upper handle than the first downwardly extending slot. The second downwardly extending slot has a plurality of second-slot teeth on a side thereof adjacent to the first downwardly extending slot. A lower arm includes a first end, and a lower handle at a second end. A control arm is pivotably connected at a first end to the upper handle and at a second end to the lower arm at an intermediate location between the first end and the lower handle. A spring is affixed at a first end to the upper arm at a location adjacent to the first end thereof, and affixed at a second end to the control arm so as to resist rotation of the control arm.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: April 10, 2001
    Inventors: Brett P. Seber, Eric B. Carmichael
  • Patent number: 6164107
    Abstract: A crimping tool capable of forming a uniform series of deformations or crimps on a workpiece, such that at least a portion of the workpiece can be modified to acquire an arcuate shape with a predetermined radius. The crimping tool includes a pair of arms and an associated pair of jaws. The tool further includes an adjustment feature associated with one of the arms for adjusting and gaging the distance between the jaws when in a crimping position. As such, the degree of deformation or crimping that can be applied by the jaws is positively limited by the adjustment feature, which physically establishes the minimum gap width between the jaws during a crimping operation. The jaws include die members specially configured to promote accurately placed and uniform crimps in a workpiece.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: December 26, 2000
    Inventor: William Korba, Jr.
  • Patent number: 6161455
    Abstract: Adjustable pliers having a pair of handles, each handle having ajaw portion, an intermediate portion and a hand-grip portion. The handles intersect each other and are pivotally mounted to each other so that movement of the hand-grip portions in one direction will move the jaw portions in the same direction. A slide extends from one of the intermediate portions and a slot is in the other intermediate portion. The slide extends into the slot and is slidable along the slot. The slide has a jaw portion extending therefrom. A lock assembly is provided on the handle members to lock the two position.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: December 19, 2000
    Assignee: Great Neck Saw Manufacturers, Inc.
    Inventor: Qiu Jian Ping
  • Patent number: 6101908
    Abstract: Self-adjusting pliers, consisting of a male handle member and a female handle member with toothed jaws, sliding against each other by means of a pawl which connects them and slides in an elongated racked slot inserted in one of the toothed jaws, both handle members being joined together by a coupling link consisting of two sleeves (1), (2) which move against each other telescopically, one of them (2) pivoting on the male handle member (6) and the other on the female handle member (11); one spring (3) connecting both sleeves (1), (2) and a second spring (5) connecting one (1) of the sleeves with one (11) of the handle members.Suitable for application in the manufacture of hand tools.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: August 15, 2000
    Assignee: Super-Ego Tools, S.A.
    Inventor: Manuel Azkona
  • Patent number: 5887495
    Abstract: A pair of pliers has a driving handle, a fixed handle, a block plate, a U-shaped spring, a first torsion spring, and a second torsion spring. The driving handle couples with the fixed handle pivotally. The first torsion spring and the second torsion spring are connected to the driving handle and the fixed handle. The U-shaped spring is connected to the driving handle and the fixed handle.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: March 30, 1999
    Inventor: Hung-Tien Kao
  • Patent number: 5176049
    Abstract: This invention relates to hand tools in general, and more particularly to a gripping plier or wrench having compound leverage gripping power not found in the tools most commonly sold and used today. This tool further has constantly parallel jaws at any adjustment position within its capacity. When constructed as a plier, it grips the workpiece with better than a 10:1 leverage ratio which makes it practically impossible to slip without the operator releasing its grip. When constructed as a wrench for turning nuts, bolts, and fittings, its gripping power holds the workpiece so tightly that there is no possibility of rounding off the corners or otherwise damaging it during the turning operation. Additionally, if a hexagonal object has been previously damaged and has rounded off corners, the wrench version of this tool, in any of its configurations, can effectively grip and turn such an object, a feat that the most commonly used open-end, box-end, or adjustable wrenches cannot perform to any satisfactory degree.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: January 5, 1993
    Inventor: Ted Neff
  • Patent number: 5050465
    Abstract: Pliers comprising a stationary pliers member (10) with associated first jaw member (11) and a moveable pliers member (12) with associated second jaw member (13). Jaw member (13) of the moveable pliers member is moveable towards and away from jaw member (11) of the stationary pliers member by means of an actuating handle (21) pivotable relative to the stationary pliers member (10). The second jaw member (13) is moveable towards the first jaw member (11) in a two-step movement, that is to say with a first movement with relatively long length of movement and with relatively little force by means of a first actuating means (17, 19) between the actuating handle (21) and the moveable pliers member (12) and with a second movement with relatively short length of movement and with relatively large force by means of a second actuating means (26) between the actuating handle (21) and the moveable pliers member (12).
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: September 24, 1991
    Inventor: Audun Haugs
  • Patent number: 5020399
    Abstract: Self-adjusting pliers for single-handed manual manipulation will automatically adjust to positions of positive gripping and holding of any size workpiece within the size range defined by the maximum opening between the jaw portions of the pliers, which jaw portions respectively extend parallel to jaw portion axes. Upon closure from the maximum opening, parts first undergo a sliding action along an axis until the workpiece is engaged and then a pivoting action. The plier handles have bearing surfaces inclined at angles in predetermined ranges to the sliding axis and to the jaw portion axes to facilitate shifting from the sliding action to the pivoting action.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: June 4, 1991
    Assignee: Snap-On Tools Corporation
    Inventors: Jeffrey R. Annis, Daniel M. Eggert
  • Patent number: 4922770
    Abstract: A self-locking pliers provides automatic jaw adjustment for gripping objects of different sizes. First and second pinsers-defining members each have a body portion, a jaw-defining portion and a handle portion, being joined by a bolt extending through a slot in one of the members in pivotal, mutually moveable relationship. The slot permits pivoting as well as sliding movement of the first member relative to the second member, and has along a jaw-proximate side teeth to be engaged by corresponding teeth of a locking pawl carried rotatably within the slot by a shank of the bolt. A jaw-remote side of the slotted opening provides a smooth surface for sliding engagement of a smooth reaction surface of the locking pawl opposite from its teeth. The locking pawl has on its jaw-proximate side a camming surface proximate to the locking teeth. A control arm is pivotally engaged at one end to the body portion of the second member.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: May 8, 1990
    Assignee: American Pneumatic Technologies, Inc.
    Inventors: Andrzej J. Dlugolecki, Timm R. Herman