Featured patents

Rotary Engine Vane Conduits Apparatus and Method of Operation Therefor
US 08794943 B2, Aug. 5, 2014, Mounted on working member, Merton W. Pekrul
A rotary apparatus, comprising:…

Rotary Pump or Motor With Orbital Piston Aspiration
US 08794945 B2, Aug. 5, 2014, Supply and exhaust passages in working member, Fritz Forgy et al.
A rotary component, comprising:…

Oil Pump
US 08870556 B2, Oct. 28, 2014, Inner member has five or more teeth, Masato Izutsu et al. / Yamada Manufacturing Co., Ltd. (Kiryu-shi, Gunma-ken, JP)
An oil pump comprising:…

Variable Displacement Pump Having a Rotating Cam Ring
US 08740593 B2, June 3, 2014, By cylinder or cylinder portion pivotal movement, Martin A. Clements et al. / Eaton Industrial Corporation (Cleveland, US)
A fuel pump comprising:…

Stator/Rotor Assemblies Having Enhanced Performance
US 08734141 B2, May 27, 2014, Unlike Helical Surfaces on Relatively Wobbling Rotating Member and Encompassing Cylinder, John Snyder et al. / Halliburton Energy Services, P.C. (Houston, US)
A method of constructing a stator/rotor assembly, the method comprising:…

Rotary Pump Device Having Seal Mechanism Which Includes Resin Member and Reinforcing Ring in Hollow Portion of Resin Member
US 08678798 B2, March 25, 2014, With Mechanical Sealing, Nobuhiko Yoshioka et al. / Advics Co., Ltd. (Kariya, Aichi-Pref., JP)
A rotary pump device comprising:…

Hydraulic Machine With Vane Retaining Mechanism
US 08597002 B2, Dec. 3, 2013, By adjustably limiting vane or abutment movement, Norman Ian Mathers / Mathers Hydraulics Pty. Ltd. AU
A hydraulic machine comprising:…

Pivoting, Hinged Arc Vane Rotary Compressor or Expander
US 08579615 B2, Nov. 12, 2013, With condition responsive control of non-working fluid, Ibrahim Sinan Akmandor / Pars Makina Sanayi Ve Ticaret Limited Sirketi (Ankara, TR)
A rotary expander, comprising:…

Scroll Expansion Machine With Air Flow Passage Around Outer Periphery of Sealing Surface
US 08562317 B2, Oct. 22, 2013, Helical working member, e.g., scroll, Tamotsu Fujioka et al. / Anest Iwata Corporation JP
A scroll expansion machine comprising:…

Variable-Displacement Vane Oil Pump
US 08469683 B2, June 25, 2013, With working fluid bias, Massimiliano Lazzerini et al. / Pierburg Pump Technology Italy S.p.A. (Lanciano, IT)
A variable-displacement oil vane pump comprising:…

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