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Class 81/90.5 - At least three jaws enclose work


Subclass of Class 81 - Tools
Definition: Tool including three or more serially arranged work-gripping
No. of patents: 7
Last issue date: 09/04/2007


NumberTitleIssue Date
7263917Open-ended spin tool
An open-ended spin tool comprising a first z-shaped structure, a second z-shaped structure, the second z-shaped structure being pivotably associated with the first z-shaped structure, a first gripping portion cavity, a first actuatable roller and a second actuatable...
09/04/2007
6978701Wrench
A wrench has a head portion (10) adapted to engage and apply torque to a workpiece, including a ring member (14) which surrounds the workpiece and has a fixed end (16) and a free end (18) such that, when the ring engages a workpiece and a...
12/27/2005
6571667Manual tong safety latch
A latch device for a manual tong apparatus that incorporates a secondary catch mechanism is presented. Such a secondary catch would assist in maintaining the tong assembly in it's closed position during a reversing operation or at a time when load applied...
06/03/2003
6134992Fasterner removing tool
A fastener removing tool including a driver having a head positioned within a housing which is movable along a longitudinal axis of the housing. Several levers are pivotally mounted within the housing, which each include a fastener-engaging first end exte...
10/24/2000
6119558Manual pipe tong having secondary safety latch
Manual pipe tong comprising secondary latch. The pipe tong comprises a handle and a plurality of linked jaw segments pivotally attached to the handle. Two of the segments are first and second latch segments, and are releasably engageable to form a primary...
09/19/2000
4770070Ratchet tool having open-ended jaws
A tool having a pair of open-ended jaws with spaced confronting jaw faces and a support for the jaws, wherein each jaw comprises a continuous loop of chained links movably mounted on a plurality of rotatable rollers, said rollers being floatingly mounted ...
09/13/1988
3969963Adjustable pipe wrench
A wrench with relatively movable members to transmit gripping force between said members comprising a swinging element with the rear face of arcuate form on which side are gear teeth, a series of connecting links the final link forming the handle, said ha...
07/20/1976
 
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