Featured patents

Scroll Compressor With Cover Covering Driving Shaft of Driving Motor
US 08845310 B2, Sept. 30, 2014, Helical working member, e.g., scroll, Satoshi Iitsuka et al. / SANYO Electric Co., Ltd. (Moriguchi-shi, JP)
A scroll compressor, 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:…

Sealing System for Gerotor Apparatus
US 08753099 B2, June 17, 2014, Labyrinth, Mark T. Holtzapple et al. / The Texas A&M University System (College Station, US)
A gerotor apparatus, comprising:…

Internal Orbital Engine
US 08684714 B2, April 1, 2014, Positively Actuated Vane, Frank W. Leonard
An orbital engine with a first outer generally tubular body with two outer body…

Pumping Apparatus With a Hollow Shaft Acting as a Valve
US 08657592 B2, Feb. 25, 2014, Movable member moved axially, Denis W. Bedford / J.C. Bamford Excavators Limited (Uttoxeter, GB)
A pumping apparatus including:…

Compressor Incorporated With Oil Separator
US 08597005 B2, Dec. 3, 2013, Heat Exchange or Non-Working Fluid Lubricating or Sealing, Tatsuki Nomura et al. / Sanden Corporation (Isesaki-shi, Gunma, JP)
A compressor incorporated with an oil separator comprising:…

Downhole Positive Displacement Motor
US 08535028 B2, Sept. 17, 2013, Unlike Helical Surfaces on Relatively Wobbling Rotating Member and Encompassing Cylinder, William Emil Groves / Cansonics Inc. (Calgary, Alberta, CA)
A downhole positive displacement motor comprising:…

Gear Pump With Pressure Relief Groove
US 08512018 B2, Aug. 20, 2013, Working fluid portion fills intertooth spaces or spaces between adjacent vanes, Juergen Floerchinger et al. / TRW Automotive GmbH (Alfdorf, DE)
A hydraulic device having an inlet side and an outlet side, the hydraulic device…

Screw Compressor With a Sound Dampening Device That Separates Lubricant
US 08500424 B2, Aug. 6, 2013, Helical or herringbone, Klaus Feller et al. / Bitzer Kuehlmaschinenbau (Sindelfingen, DE)
Screw compressor comprising an outer housing, a compressor screw housing arranged…

Vane Pump Having a Passage Area Ratio Between an Oil Supply Passage Area and a Gas Passage Area
US 08449277 B2, May 28, 2013, With non-working fluid passage in drive shaft, Yoshimasa Kuno et al. / Taiho Kogyo Co., Ltd. (Toyota-shi, Aichi, JP)
A vane pump comprising: a housing comprising a substantially circular pump…

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