Featured patents

Reciprocating Compressor
US 08770088 B2, July 8, 2014, By varying reaction plate inclination relative to cylinder axes, Hiroshi Ikeda et al. / Sanden Corporation (Gunma, JP)
A reciprocating compressor comprising:…

Apparatus to Eliminate Back Drive in Push Pull System of Rotor Aircraft and Related Methods
US 08739679 B2, June 3, 2014, With means to vary feedback signal in response to rate of working member movement, M. Keith Robinson et al. / Carter Aviation Technologies, LLC (Wichita Falls, US)
An apparatus for eliminating back drive in a push pull type control system,…

Hydraulic Pressure Feedback for Servovalves
US 08739680 B2, June 3, 2014, Both inlet and exhaust controlled by motive fluid pressure in supply line or chamber, Dennis Reust
A spool for a servovalve comprising:…

Hydraulic Valve Device
US 08667884 B2, March 11, 2014, Expanding chamber inlet controlled by contracting chamber pressure or flow, Bo Andersson / Nordhydraulic AB (Kramfors, SE)
A hydraulic valve device comprising:…

Variable Output Hydraulic Actuator System
US 08667886 B2, March 11, 2014, Means to simultaneously open working chambers to inlet or exhaust, Scott Svend Hendron et al. / Deere and Company (Moline, US)
A vehicle comprising:…

Pneumatic Booster
US 08631735 B2, Jan. 21, 2014, One movable part unitary with working member, Keiichi Saiwaki et al. / Hitachi Automotive Systems, Ltd. (Kanagawa, JP)
A pneumatic booster, comprising:…

Arrangement for Hydraulic Eccentric Adjustment to Set a Predefined Displacement for a Hydrostatic Motor
US 08596186 B2, Dec. 3, 2013, Stroke control, Stephan Schinacher et al. / ZF Friedrichshafen AG (Friedrichshafen, DE)
A radial piston motor (1), in which a predetermined displacement volume can be…

Valvetrain Oil Control System and Oil Control Valve
US 08534182 B2, Sept. 17, 2013, Expanding chamber inlet controlled by contracting chamber pressure or flow, Robert D. Keller et al. / Eaton Corporation (Cleveland, US)
A hydraulic control system for a valve train comprising:…

Valve Arrangement
US 08479636 B2, July 9, 2013, Motive fluid control valve responsive to pressure in supply line to or exhaust line from motor which it modifies, Winfried Rüb / Hydac Filtertechnik GmbH (Salzbach/Saar, DE)
A valve arrangement, comprising:…

Electro-Mechanical Control System for Positioning Fluid Motors
US 08468931 B2, June 25, 2013, Cable, James B. Johnson
A fluid motor control system comprising:…

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