Featured patents

Harmonic Engine
US 08807012 B1, Aug. 19, 2014, Axially seating valves, Charles L. Bennett et al. / Lawrence Livermore National Security, LLC (Livermore, US)
An engine comprising:…

Fluid Operated Actuator System
US 08857313 B2, Oct. 14, 2014, Both inlet and exhaust controlled by motive fluid pressure in supply line or chamber, Martin Engels et al. / Norgren GmbH (Alpen, DE)
A method for operating a control valve adapted to selectively provide…

Fluid Servo and Applications
US 08863641 B2, Oct. 21, 2014, Fluid vented through working member, Jonathan Sebastian Howes / Isentropic Ltd. (Hampshire, GB)
A fluid pressure operated actuator device, comprising:…

Stack Valve Having Bucket Parallel Movement Function
US 08726786 B2, May 20, 2014, For synchronization of motors, Takashi Miki et al. / Nabtesco Corporation (Tokyo, JP)
A stack valve having a bucket parallel movement function, comprising:…

Hood-Lifting Actuator With Disarmable Return Braking Arrangement
US 08739678 B2, June 3, 2014, Reversal responsive to motive fluid pressure change, Evrard Borg et al. / Herakles (Le Haillan, FR)
A triggered stroke actuator of the type comprising a cylinder housing a movable…

Hydraulic Drive System and Diagnostic Control Strategy for Improved Operation
US 08726785 B2, May 20, 2014, Both inlet and exhaust controlled by motive fluid pressure in supply line or chamber, Greg Batenburg / Westport Power Inc. (Vancouver, British Columbia, CA)
A method of diagnosing and controlling a hydraulic drive system comprising:…

Pressure Unloading Valve to Cushion a Pneumatic Cylinder
US 08578837 B1, Nov. 12, 2013, Throttling, John C. A. Burhoe
A method for cushioning the deceleration of a piston in an expandable chamber…

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:…

Force Actuator
US 08528461 B2, Sept. 10, 2013, With means for selectively changing the speed or force exerted on load by the selective application of motive fluid in a single direction to one or more working members, Peter Vogt et al. / Carl Zeiss SMT GmbH (Oberkochen, DE)
An actuator arrangement, comprising:…

Pneumatic Actuator With a Position Control and Position Adjustment
US 08505436 B2, Aug. 13, 2013, Position Maintaining Type, Ulrich Teschke / Norgren GmbH (Alpen, DE)
A proportional actuator valve (110) adapted for position control and position…

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