Featured patents

Positive Displacement Rotary Pumps With Improved Cooling
US 08821141 B2, Sept. 2, 2014, With Mechanical Sealing, Chris Mihm et al. / Wright Flow Technologies Limited (Eastbourne, GB)
A rotary pump comprising:…

Rotary Cam Ring Fluid Machine
US 08784084 B2, July 22, 2014, Between adjacent cylinder and working member sides, KwangSeon Hwang et al. / RichStone Limited (Jeonju, KR)
A rotary cam ring fluid machine comprising:…

Rotary Compressor With Synchronous Turning Between Cylinder Block and Rotor
US 08790099 B2, July 29, 2014, Partition radially slidable in internal member, Zongchang Qu et al. / Dafeng Fengtai Fluid Machinery Technology Co., Ltd. (Jiangsu, CN)
A rotary compressor, comprising:…

Rotor and Hydraulic Motor Including the Rotor
US 08870557 B2, Oct. 28, 2014, Miscellaneous, Kin Wa Chan
A rotor for hydraulic motor, comprising: a plurality of vanes spacedly apart…

Scroll Fluid Machine
US 08858203 B2, Oct. 14, 2014, Helical working member, e.g., scroll, Kazutaka Suefuji et al. / Hitachi Industrial Equipment Systems Co., Ltd. (Tokyo, JP)
A scroll fluid machine comprising:…

Powder Metal Scroll Hub Joint
US 08684711 B2, April 1, 2014, Helical working member, e.g., scroll, Jean-Luc M. Caillat et al. / Emerson Climate Technologies, Inc. (Sidney, US)
A scroll component comprising:…

Multi-Stage Dry Pump
US 08662869 B2, March 4, 2014, Three or more, Toshio Suzuki et al. / ULVAC, Inc. (Chigasaki-Shi, JP)
A multi-stage dry pump 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 Machine Having Axially Biased Scroll
US 08506271 B2, Aug. 13, 2013, With mechanical sealing, Robert C. Stover et al. / Emerson Climate Technologies, Inc. (Sidney, US)
A compressor comprising:…

Rotary Vacuum Pump With a Discharge Compensating Channel
US 08469684 B2, June 25, 2013, Non-working and working fluids intermix in working chamber, Eric Figoni / Oerlikon Leybold Vacuum GmbH (Cologne, DE)
A rotary vacuum pump comprising:…

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