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Class Information
Number: 269/25
Name: Work holders > With fluid means > Cylinder-piston means directly moves jaw(s)
Description: Device wherein (A) a fluid means is used to relatively move a solid (or hollow) member that has a generally circular periphery having a close fit within a surrounding hollow member that is similarly configured, and (B) one of these two members moves an immediately adjacent jaw*(s).










Sub-classes under this class:

Class Number Class Name Patents
269/26 With equalized pressure on plural (nonopposed) jaws 24


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8678362 Adjustable link clamp Mar. 25, 2014
8585027 Clamp device Nov. 19, 2013
8517360 Clamp device Aug. 27, 2013
8177205 Device for displacing jaws of a clamp May. 15, 2012
8167289 Clamping element for workpieces, in particular a vice May. 1, 2012
8146221 Hydraulic tool Apr. 3, 2012
8132797 Floating-type clamping device Mar. 13, 2012
7784775 Intensified machinist vise Aug. 31, 2010
7618031 Mass impact claw bar Nov. 17, 2009
7476050 Grease actuated ball and socket joint Jan. 13, 2009
7275899 Machining apparatus with coolant-operated clamp device Oct. 2, 2007
7213803 Clamp and method for operating same May. 8, 2007
7204480 Prying tool for dislodging concrete forms from poured concrete walls Apr. 17, 2007
7156384 Multi-purpose flexible jaw universal vise with removable clamp feature Jan. 2, 2007
7073783 Hydraulic-operated vise device Jul. 11, 2006
7048266 Device and method for temporarily fastening a plurality of workpieces in response to the introduction of pressurized fluid May. 23, 2006
6929255 Two-stage actuation clamp for electrical device under test (DUT) with DUT-linked double action Aug. 16, 2005
6877729 Reconfigurable workholding fixture Apr. 12, 2005
6842971 Pallet pressure monitor Jan. 18, 2005
6832755 Clamping element Dec. 21, 2004
6726192 Wood panel clamping tool Apr. 27, 2004
6641323 Spherical locking device Nov. 4, 2003
6634072 Machining apparatus and equipment of thin section long workpiece Oct. 21, 2003
6557600 Hold down apparatus for commercial wood molder May. 6, 2003
6522953 Thermal polymer clamping tool Feb. 18, 2003
6502809 Workpiece holding fixture Jan. 7, 2003
6488060 Woodworking tooling machine, capable of processing items of variable size and complex shape, and the relative method Dec. 3, 2002
6427313 Circuit board holding apparatus and circuit board hold releasing method Aug. 6, 2002
6425577 Fastening unit for blocking the items to be processed on the working plane of a woodworking tooling machine, and a tooling machine equipped with said unit Jul. 30, 2002
6390170 Apparatus for locating and securing supports to panels May. 21, 2002
6386532 Clamp squeeze apparatus and method May. 14, 2002
6206352 Circuit board holding apparatus Mar. 27, 2001
6202996 Workpiece clamping tool Mar. 20, 2001
6202999 Workpiece support device Mar. 20, 2001
6158780 Coupling for use in supplying air pressure to an air driven pump on a pallet Dec. 12, 2000
6089815 Basket assembly for wheel rim transfer Jul. 18, 2000
6042469 Air clamp Mar. 28, 2000
6022007 Pallet couple and decouple clamping apparatus Feb. 8, 2000
5994800 Precision clamping device with digitally programmable load Nov. 30, 1999
5984288 Device for clamping parts, in particular metal sheets, in a welding or mounting line Nov. 16, 1999
5927700 Transmission device for a clamp Jul. 27, 1999
5876025 Cylinder apparatus Mar. 2, 1999
5842690 Semiconductor wafer anchoring device Dec. 1, 1998
5836573 Clamping device Nov. 17, 1998
5820118 Swing clamp apparatus Oct. 13, 1998
5816567 Fluid operated clamp including integral frame and slide member support Oct. 6, 1998
5810340 Precision clamping device with digitally programmable load Sep. 22, 1998
5806841 Fluid-actuated workholding apparatus Sep. 15, 1998
5794324 Pallet couple and decouple clamping apparatus and method for pallet coupling and decoupling Aug. 18, 1998
5704600 Power operated clamp assembly Jan. 6, 1998

1 2 3










 
 
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