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Class Information
Number: 418/1
Name: Rotary expansible chamber devices > Methods
Description: Methods .










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8702406 Compressor alignment method and device Apr. 22, 2014
8678795 Stator of a gerotor device and a method for manufacturing roller pockets in a stator of a gerotor device Mar. 25, 2014
8647087 Cooling system for gerotor motor Feb. 11, 2014
8641392 Scroll compressor bodies with scroll tip seals and extended thrust region Feb. 4, 2014
8636485 Electroformed stator tube for a progressing cavity apparatus Jan. 28, 2014
8636487 Dual stage pump having intermittent mid-shift load supports Jan. 28, 2014
8613609 Bi-metal pump gear Dec. 24, 2013
8597006 Apex seal for rotary internal combustion engine Dec. 3, 2013
8591210 Scroll compressor having adjustable spacers Nov. 26, 2013
8568117 Powder metal scrolls Oct. 29, 2013
8510968 Turbine and air knife assembly Aug. 20, 2013
8500414 Method of controlling a gear pump as well as an application of the method Aug. 6, 2013
8454332 Method of assembling a refrigerating compressor Jun. 4, 2013
8337182 Skinning of progressive cavity apparatus Dec. 25, 2012
8292605 Rotary fluid device with multi-level phase shift control Oct. 23, 2012
8277207 Oil supply method of two-stage screw compressor, two-stage screw compressor applying the method, and method of operating refrigerating machine having the compressor Oct. 2, 2012
8235676 Net-displacement control of fluid motors and pumps Aug. 7, 2012
8186982 Adjustable rotary pump with reduced wear May. 29, 2012
8177535 Method for timing a polymer pump containing polymer May. 15, 2012
8152504 Method of operation of a spherical positive displacement rotary machine and devices for carrying out said method Apr. 10, 2012
8133045 Self-aligning pump rotor and methods Mar. 13, 2012
8100676 Rotor, a method for producing such rotor and a pump comprising such rotor Jan. 24, 2012
7993120 Slide valve Aug. 9, 2011
7993117 Scroll compressor and baffle for same Aug. 9, 2011
7963753 Scroll compressor bodies with scroll tip seals and extended thrust region Jun. 21, 2011
7959422 Oil pump and method of assembling the oil pump Jun. 14, 2011
7909591 Eccentric screw pump equipped with erosion-resistant rotor Mar. 22, 2011
7905714 Progressing cavity pump assembly and method of operation Mar. 15, 2011
7878775 Scroll compressor with housing shell location Feb. 1, 2011
7878774 Moineau stator including a skeletal reinforcement Feb. 1, 2011
7874820 Compressor unloading valve Jan. 25, 2011
7857607 Rotary lobe pump Dec. 28, 2010
7845918 Powder metal scrolls Dec. 7, 2010
7819646 Rotary piston vacuum pump with washing installation Oct. 26, 2010
7670121 Spherical fluid machines Mar. 2, 2010
7669577 Gerotor and method of assembling the same Mar. 2, 2010
7588426 Oil rotary vacuum pump and manufacturing method thereof Sep. 15, 2009
7540726 Scroll compressor and method for machining scroll wrap Jun. 2, 2009
7491043 Variable displacement pump having a rotating cam ring Feb. 17, 2009
7473081 Hermetically sealed compressor and method of manufacturing the same Jan. 6, 2009
7354258 Stator for an eccentric single-rotor screw pump and method for its production Apr. 8, 2008
7338266 Screw pump and method of operating the same Mar. 4, 2008
7232295 Tempering method for a screw-type vacuum pump Jun. 19, 2007
7214045 Spherical fluid machine with flow control mechanism May. 8, 2007
7195468 Scroll compressor having frame fixing structure and frame fixing method thereof Mar. 27, 2007
7165947 Screw compressor capable of manually adjusting both internal volume ratio and capacity and combined screw compressor unit accommodating variation in suction or discharge pressure Jan. 23, 2007
7156922 Multi-chamber installation for treating objects under vacuum, method for evacuating said installation and evacuation system therefor Jan. 2, 2007
7114931 Rotary pump Oct. 3, 2006
7108493 Variable displacement pump having rotating cam ring Sep. 19, 2006
7063523 Compressor discharge assembly Jun. 20, 2006

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