Featured patents

Actuating Drive for Positioning a Final Control Element and Method for Capturing a Position of the Final Control Element
US 08869675 B2, Oct. 28, 2014, With Signal, Indicator or Inspection Means, Joerg Kiesbauer et al. / Samson Aktiengesellschaft (Frankfurt, DE)
An actuating drive for positioning a final control element, comprising:…

Control System for a Hydraulic Coupler
US 08863640 B2, Oct. 21, 2014, With Signal, Indicator or Inspection Means, Ian Hill et al. / Hill Engineering Limited (Newry, County Down, GB)
A control system for extending and retracting a ram of a hydraulic coupler…

Wobble Plate Type Variable Displacement Compressor
US 08757045 B2, June 24, 2014, By varying reaction plate inclination relative to cylinder axes, Satoshi Terauchi / Sanden Corporation (Gunma, JP)
A wobble plate type variable displacement compressor having pistons inserted…

Valve Apparatus
US 08739681 B2, June 3, 2014, Relatively movable unitary inlet and exhaust valves for opposed working chambers, Axel Grigoleit et al. / Hydac Fluidtechnik GmbH (Sulzbach/Saar, DE)
A valve apparatus for setting and monitoring a clamping pressure of a clamping…

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:…

Active Implement Down Force System With Automatic Latching of Tractor Power Beyond Pressure
US 08573111 B2, Nov. 5, 2013, Between working chamber and inlet and exhaust valve, William Douglas Graham et al. / Deere & Company (Moline, US)
An improvement in an active hydraulic down pressure system for an agricultural…

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…

Apparatus to Increase a Force of an Actuator Having an Override Apparatus
US 08549984 B2, Oct. 8, 2013, Electrically operated (275) (361), David Anthony Arnold / Fisher Controls International, LLC (Marshalltown, US)
A fluid control system for use with valves, 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:…

Axial Piston and Valve Shaft Fluid Engine
US 08474363 B2, July 2, 2013, Working member adapted to directly mechanically reverse distributor, Vincent M. Kelly
A fluid engine comprising:…

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