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Class 81/99 - Spring-pressed


Subclass of Class 81 - Tools
Definition: The outer jaw is pressed by a spring.
No. of patents: 42
Last issue date: 03/29/2011


1    
NumberTitleIssue Date
7913589Adjustable wrench that clamps a workpiece exactly and tightly
A wrench includes a handle, and a driving unit pivotally mounted on the handle. The handle has an end portion provided with a support surface. The driving unit includes a first jaw having a first end pivotally mounted on the end portion of the handle, and a second j...
03/29/2011
7882768Manual wrench for actuating cylindrical elements
The invention relates to a manual wrench for actuating cylindrical elements. The inventive wrench comprises a fixed jaw (1) and a moving jaw (3) which are disposed on one end of a handle (2), whereby the fixed jaw (1) is secured with a tr...
02/08/2011
7546784Pliers having greater holding force
A pair of pliers include a shank, a fixed jaw locked onto the shank, and a movable jaw pivotally mounted on the shank and movable relative to the fixed jaw. Thus, the first contact point of the locking teeth of the fixed jaw and the second contact point of the first...
06/16/2009
7278340Apparatus for removing and installing a tie rod
An apparatus 10 for attaching or detaching a housing 45 for attaching a steering tie rod 43 to a steering rack 40 is disclosed. The apparatus 10 comprises at least one locating member 14, 15, an opening 16 in the loca...
10/09/2007
7181820Method and apparatus for orientating a fastening element
A receptacle which is configured to receive a fastener element having a hexagon, or some other polygonal profile, and which is configured to rotationally or angularly orientate the insert fastener element. One version of the receptacle provides that the receptacle i...
02/27/2007
7143671Lever-wrench pliers
Disclosed is a lever-wrench pliers, which includes a fixed jaw tip that define a mouth and has three clamping faces around the mouth, and a movable jaw that has a jaw tip with a toothed clamping face facing the middle one of the three clamping faces of the fixed jaw...
12/05/2006
7131355Lightweight wrench
A lightweight, adjustable wrench comprising of a moveable jaw with a reach that is shortened or lengthened with a strap or a cable. The loose end of the strap or cable is secured to the wrench's shank by a cam lock, or similar locking device. Since the strap or cabl...
11/07/2006
7114416Rotatively operating tool for rotatively operated member having a pair of engaging surfaces
In a rotatively operating tool, a lever (5) having a head (4) at its tip end is turnably connected to a handle (6) provided at its tip end with a lower jaw (12). The head (4) is provided with an upper jaw (7) brought into en...
10/03/2006
7096764Pipe wrench
A Pipe Wrench with: reasonable coordination on distance between—Center of Arcuate Teeth and Link-Hole, eccentric length of Tips of Arcuate Teeth and Link-Hole; Instant Grip and Release, Time-Saving, Power-Saving, easy Operation is disclosed. It is composed of Head...
08/29/2006
7069821Movable jaw type holding device
A movable jaw holding device includes a handle having a fixed jaw member holding a first rod member. A movable jaw member is pivoted to the handle by a pivot and holds a second rod member. A C-shaped retainer fastened to the shank of the pivot secures to secures the...
07/04/2006
7062995T-connector holding tool and method
A T-connector holding tool is a tool for immobilizing or applying a torque to a T-connector. The tool has an elongated handle portion and a head portion fixed to the handle portion. The head portion includes a pair of rigid claws, each including an interior surface ...
06/20/2006
7044033Clamping wrench
The invention relates to a spanner for hexagonal shaped objects (5), comprising an upper and lower jaw (1 or 2), which are respectively connected in a single-piece to the limb of a handle (4 or 3). Both jaws (1, 2) are conne...
05/16/2006
7044030Pivoting jaw pipe wrench
A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displacea...
05/16/2006
6971288Automatically adjusting self-tightening wrench
A self-adjusting wrench having a handle and a jaw member rotationally attached thereto. A smoothly curved handle face opposes a planar face on the jaw member which adjusts for distance from the curved handle face by following a generally circular path around a pinne...
12/06/2005
6883403Tool for fastening or loosening threaded couplings for cables
A hand tool for tightening or loosening a threaded cylindrical member relative to a corresponding threaded socket, including a generally rectangular wrench body which contains a generally circular opening for coaxially receiving the cylindrical member, a generally d...
04/26/2005
6799492Ratchet wrench
A ratchet wrench for turning threaded fasteners, particularly fasteners threaded on a stud or pipe located in areas of limited or obstructed access to the fastener. The wrench is operated remotely at an end of the wrench away from a fastener engagement portion. The ...
10/05/2004
6742419Pivoting jaw pipe wrench
A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displacea...
06/01/2004
6679138Bottle opener
Bottle cap removal device with an opening therein to receive a bottle cap, including a top and a base which combine to provide an envelope for the bottle cap removal device and including an annular member and a surface opposed to the annular member operat...
01/20/2004
6530297Speed wrench having a stable biasing structure
A wrench includes a fixed jaw formed on one end of a handle, a pivotal jaw pivotally secured to the handle and having one end for engaging with a fastener. The pivotal jaw has a middle cavity for receiving a spring-biased engaging member which may engage ...
03/11/2003
6412372Open-end wrench with resilient opening fun easy repositioning
An open-end wrench includes a main body, a movable jaw plate, and a recovery element. The main body is provided at two longitudinal ends with a slot in which the movable jaw the plate is pivoted. The swiveling of the movable jaw plate is confined by a pin...
07/02/2002
6412371Screwing tool with a clamping hoop
A screwing tool has a handle and a clamping hoop, which is mounted pivotably on the handle at one end and is bent in the form of a partial circle at its other end, which is remote from the handle. A stop for the clamping hoop is secured on the handle on t...
07/02/2002
6386073Open ended wrench
A wrench includes a handle with a first jaw and a protrusion respectively extending from an end thereof. A surface is connected between the protrusion and the first jaw. A pivotal member is pivotally connected to the protrusion and has a groove defined in...
05/14/2002
6349621Wrench
A wrench for applying a force to a work piece comprises a handle having proximal and distal ends, top and bottom edges and a slot extending therethrough with a groove extending downward from the slot. A fixed jaw is mounted at the distal end of the handle...
02/26/2002
6339978Open end wrench
The invention relates to an open-end wrench having a clamping jaw which is rigidly connected to a wrench handle in a fixed manner. A spring-loaded, moveable clamping jaw is pivotally mounted on the fixed clamping jaw. A recess, which recoils opposite the ...
01/22/2002
6311586Self-clamping wrench
A self-clamping wrench has one fixed clamping jaw, which is rigidly connected to a handle and one mobile clamping jaw, which is mounted thereon in such a way that it can turn. A hand lever is located on the handle on the same side as the mobile clamping j...
11/06/2001
6167784Spanner with torsion spring
A spanner includes first and second clamping members. The first clamping member has a handle portion and a first jaw portion with a pivot plate portion that has a first pivot hole formed through top and bottom surfaces thereof. The second clamping member ...
01/02/2001
6131491Self-locking chuck key
A self-locking wrench includes a movable jaw which can be moved by a manual actuator. Motion of the actuator is transmitted to the movable jaw by a leaf spring. When moving the movable jaw toward an open position, the leaf spring becomes deformed and stor...
10/17/2000
6092440Self-adjusting ratcheting wrench
A self-adjusting ratcheting wrench has an elongated handle terminating at one end in a fixed jaw, a movable jaw pivotally attached to the handle so as to close on the fixed jaw and terminating at one end in a pair of jaw faces forming an obtuse angle and ...
07/25/2000
5996445Ratcheting wrench
A ratcheting open-ended wrench has a movable jaw pivotally attached to a fixed jaw. The jaws define an opening capable of receiving the hexagonal head of a fastener such as a nut, bolt, hose fitting or pipe fitting. The fastener may be turned by moving th...
12/07/1999
5927159Ratchet wrench
A ratchet wrench including a fixed jaw and a movable jaw attached to a body of the ratchet wrench and having V-shaped nut gripping portions opposing each other. The fixed jaw is pivoted to a forward end portion of the body and biased to rotate toward the ...
07/27/1999
5771761Spring pivoted, ratcheting lever wrench
A wrench includes a fixed jaw (16) at one end of a handle (15) and a pivoted jaw (19) joined to the handle by a pivot (20) disposed in a plane (30). A spring (25) urges the pivoted jaw through a gripping position in which flat gripping surfaces (17, 18) a...
06/30/1998
5746097Wrench having a spring biased jaw
A wrench for driving a fastener includes a fixed jaw formed on one end of a handle. A pivotal jaw is pivotally coupled to the handle at a pivot axle. A knob is slidably engaged on the handle. A resilient blade pivotally couples the knob to the pivotal jaw...
05/05/1998
5524946Irrigation pipe tools
A pipe manipulating tool having an elongated handle and a pipe engaging portion that grips a pipe when a unidirectional force is applied to the handle. A pipe engaging portion of a first pipe rotating tool has a first arcuate jaw pivotally mounted to the ...
06/11/1996
5393036Continuously engaged tangential driving tool
Wrench for continuous driving engagement with a rotatively driven element such as a screw, bolt or nut, which is particularly suitable for use where the ends of the driven element are not accessible and in applications where space for manipulation of the ...
02/28/1995
5365809Adjustable spanner
An adjustable spanner includes a connecting member which comprises a center tool hole for inserting a screw-driver for use as a handle, two horizontal openings longitudinally aligned on the same plane at two opposite sides by the center tool hole, two ver...
11/22/1994
5275615Medical instrument having gripping jaws
A medical instrument as a forcep with tissue-gripping jaws is disclosed herein having pivotal handles carried on an instrument body from which an elongated tube projects enclosing a push-pull rod. The rod carries a pivotal jaw arrangement and outwardly pr...
01/04/1994
5251518Pipe wrench
A pipe wrench capable of turning pipes or rods in a convenient manner is disclosed. The wrench includes a handle portion and a pivotable portion, and these two portions are connected through a hinge portion. The pivotable portion pivotally closes and open...
10/12/1993
4690019Operating wrench for tamperproof hydrants
A tamperproof fire hydrant which can only be operated with use of a special operating means or tool thus preventing the opening of the hydrant by unauthorized persons for unauthorized use. The hydrant is provided with the usual polygonal end portion of th...
09/01/1987
4651597Speed wrench equipped with jaw auxiliary operational mechanism
A speed wrench is equipped with an auxiliary jaw mechanism which can be selectively opened and closed by the action of a control link, thereby allowing the auxiliary jaw mechanism to clamp differently sized workpieces such as a screw nut or bolt. In order...
03/24/1987
4616534Closed end wrench
A wrench comprising a body member having a lower jaw disposed at one end thereof, a head member having a spring engaging surface and a base engaging surface, the head member being pivotally connected to the body member in the vicinity of the lower jaw and...
10/14/1986
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