Featured patents

Scroll Compressor Including Flow Path With Differing Axial Extents
US 08851868 B2, Oct. 7, 2014, Having specific wrap or end plate, e.g., shape, material, coating, Ian David Stones et al. / Edwards Limited (Crawley, GB)
A multi-start scroll compressor comprising:…

Gas Seal Arrangement for Rotary Internal Combustion Engine
US 08851870 B2, Oct. 7, 2014, Ring seal or arcuate seal portion, Eugene Gekht et al. / Pratt & Whitney Canada Corp (Longueuil, Quebec)
A rotor of a rotary internal combustion engine, the rotor comprising:…

Scroll Compressor With Cover Covering Driving Shaft of Driving Motor
US 08827667 B2, Sept. 9, 2014, Helical working member, e.g., scroll, Kazuyoshi Sugimoto et al. / SANYO Electric Co., Ltd. (Moriguchi-shi, JP)
A scroll compressor, comprising:…

Rotary Piston Steam Engine With Rotary Variable Inlet-Cut-Off Valve
US 08784086 B2, July 22, 2014, Having each radial protuberance of like dimension, Errol John Smith et al.
An engine comprising:…

Integrated Pump for Compressible Fluids
US 08662870 B2, March 4, 2014, With mechanical sealing, Benno Frank Smit et al. / Swashpump Technologies Limited (Auckland, NZ)
A swash pump adapted for pumping a compressible fluid, comprising:…

Pre-Pressurization Pump Liner for Vane Pump
US 08668480 B2, March 11, 2014, Working Chamber Surface Expressed Mathematically, David W. Borgetti et al. / Hamilton Sundstrand Corporation (Windsor Locks, US)
A vane pump comprising:…

Scroll Fluid Machine Having a Communication Passage Between an Inner Periphery of Lip Seal and an Outer Periphery of Drive Shaft or Ring
US 08647085 B2, Feb. 11, 2014, With mechanical sealing, Koichi Tashiro et al. / Hitachi Industrial Equipment Systems Co., Ltd. (Tokyo, JP)
A scroll fluid machine, comprising:…

Rotary Pump Including Inner Rotor and Outer Rotor Having Different Axial Size of an Axial Clearance
US 08585384 B2, Nov. 19, 2013, Inner member has five or more teeth, Kenichi Oishi et al. / Denso Corporation (Kariya, JP)
A rotary pump comprising:…

Variable Displacement Oil Pump
US 08545200 B2, Oct. 1, 2013, Spring or fluid biased movable member, Atsushi Naganuma et al. / Hitachi Automotive Systems, Ltd. (Ibaraki, JP)
A variable displacement oil pump comprising:…

Fuel Pump With Axial Slide Gap
US 08517708 B2, Aug. 27, 2013, Positively Actuated Vane, Yoshitaka Wakamatsu et al. / Denso Corporation (Kariya, JP)
A fuel pump that draws fuel and discharges the drawn fuel after pressurizing…

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