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:…

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:…

Multistage Roots Vacuum Pump Having Different Tip Radius and Meshing Clearance From Inlet Stage to Exhaust Stage
US 08702407 B2, April 22, 2014, Interengaging rotary members, Nigel Paul Schofield et al. / Edwards Limited (West Sussex, GB)
A multistage vacuum pump comprising a stator housing a multistage rotor assembly,…

Gear Pump
US 08708678 B2, April 29, 2014, Having each radial protuberance of like dimension, Stephen B. Muscarella et al. / Pulsafeeder, Inc. (Rochester, US)
A gear pump, comprising:…

Rotary Compressor and Manufacturing Method of the Same
US 08690556 B2, April 8, 2014, Sliding abutment, Takahiro Nishikawa et al. / SANYO Electric Co., Ltd. (Moriguchi-shi, JP)
A rotary compressor comprising a sealed container which comprises a driving…

Semi-Hermetic Scroll Compressors, Vacuum Pumps, and Expanders
US 08668479 B2, March 11, 2014, With lubricant, liquid seal or nonworking fluid separation, Robert W. Shaffer / Air Squad, Inc. (Broomfield, US)
A device separating a working fluid from a cooling fluid within a housing having…

Progressive Cavity Pump Having an Inner Rotor, an Outer Rotor, and Transition End Piece
US 08613608 B2, Dec. 24, 2013, Rotating, Sigurd Ree / AGR Subsea AS (Straume, NO)
A progressive cavity pump comprising:…

Compressor Having Capacity Modulation System
US 08529232 B2, Sept. 10, 2013, Helical working member, e.g., scroll, Robert C. Stover et al. / Emerson Climate Technologies, Inc. (Sidney, US)
A compressor comprising:…

Compressor Including Valve Assembly
US 08517703 B2, Aug. 27, 2013, Helical working member, e.g., scroll, Roy J. Doepker / Emerson Climate Technologies, Inc. (Sidney, US)
A compressor comprising:…

Compressor Having Capacity Modulation System
US 08517704 B2, Aug. 27, 2013, Helical working member, e.g., scroll, Masao Akei et al. / Emerson Climate Technologies, Inc. (Sidney, US)
A compressor comprising:…

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