Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; Rotary-piston, or oscillating-piston, positive-displacement pumps
More topics under "F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; Rotary-piston, or oscillating-piston, positive-displacement pumps" (82,856)
F04C 11 - Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations (1,800)
F04C 13 - Adaptations of machines or pumps for special use, e.g. for extremely high pressures (1,349)
F04C 14 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations (3,663)
F04C 15 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups (7,179)
F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462)
F04C 19 - Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids (784)
F04C 2 - Rotary-piston machines or pumps (14,296)
F04C 21 - Oscillating-piston pumps specially adapted for elastic fluids (244)
F04C 23 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids (6,201)
F04C 25 - Adaptations for special use of pumps for elastic fluids (1,852)
F04C 27 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids (2,516)
F04C 28 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids (4,928)
F04C 29 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups (16,981)
F04C 3 - Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type (370)
F04C 5 - Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable (932)
F04C 7 - Rotary-piston machines or pumps with fluid ring or the like (69)
F04C 9 - Oscillating-piston machines or pumps (230)
Patents for F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; Rotary-piston, or oscillating-piston, positive-displacement pumps (152)
03/2010
03/18/2010DE19981556B4 Pumpe Pump
09/2009
09/15/2009US7588429 Oil pump rotor assembly
02/2009
02/18/2009CN100462561C Oil pump rotor
02/04/2009CN100458164C Screw compressor
09/2007
09/06/2007US20070207045 Compressor
06/2007
06/12/2007US7229261 Scroll compressor having an annular recess located outside an annular seal portion and another recess communicating with suction port of fixed scroll
03/2007
03/22/2007US20070065327 Oil pump rotor assembly
01/2007
01/04/2007US20070003406 Pump
11/2006
11/22/2006CN1867775A 螺杆式压缩机 Screw compressors
11/01/2006CN1856650A 油泵转子 Pump rotor
09/2006
09/21/2006US20060210416 Scroll compressor
09/20/2006CN1836108A 回转式压缩机 Rotary Compressor
08/2006
08/09/2006EP1687539A1 Compressor
06/2006
06/27/2006US7066718 Liquid ring compressor
06/07/2006EP1666727A2 Oil pump rotor
05/2006
05/18/2006WO2005052373A3 Rotary compressor
03/2006
03/22/2006EP1552151B1 Liquid ring compressor
02/2006
02/23/2006US20060039797 Liquid ring compressor
09/2005
09/15/2005WO2004079195A3 Bearing and coupling arrangement for pumps
07/2005
07/13/2005EP1552151A1 Liquid ring compressor
06/2005
06/09/2005WO2005052373A2 Rotary compressor
06/02/2005WO2005038254A3 Scroll compressor
05/2005
05/06/2005WO2005021969A3 Oil pump rotor
04/2005
04/28/2005WO2005038257A1 Compressor
04/28/2005WO2005038254A2 Scroll compressor
03/2005
03/10/2005WO2005021969A2 Oil pump rotor
12/2004
12/08/2004CN1179132C Turbine-type vacuumizing pump
11/2004
11/24/2004EP1478853A2 Variable capacity compressor and heat exchanging system
09/2004
09/16/2004WO2004079195A2 Bearing and coupling arrangement for pumps
09/15/2004CN1529793A Compressor with capacity modulation system utilizing re-expansion chamber
08/2004
08/11/2004EP1358407A4 High pressure water pump
06/2004
06/24/2004WO2004020826A3 Gerotor mechanism
04/2004
04/07/2004EP1127220B1 Lift valve for a rotary screw compressor
03/2004
03/11/2004WO2004020826A2 Gerotor mechanism
01/2004
01/22/2004WO2004007969A1 Liquid ring compressor
12/2003
12/16/2003US6663358 Compressors for providing automatic capacity modulation and heat exchanging system including the same
11/2003
11/13/2003WO2003064857A3 Variable capacity compressor and heat exchanging system
11/12/2003EP1144867B1 Pump
11/05/2003EP1358407A2 High pressure water pump
08/2003
08/07/2003WO2003064857A2 Variable capacity compressor and heat exchanging system
07/2003
07/02/2003EP1323926A2 Pump
04/2003
04/22/2003US6551069 Compressor with a capacity modulation system utilizing a re-expansion chamber
02/2003
02/20/2003WO2002101242A3 Compressor with a capacity modulation system utilizing a re-expansion chamber
02/18/2003CA2270782C Cascaded progressing cavity pump system
12/2002
12/19/2002WO2002101242A2 Compressor with a capacity modulation system utilizing a re-expansion chamber
12/12/2002US20020187057 Compressors for providing automatic capacity modulation and heat exchanging system including the same
12/12/2002US20020187050 Compressor with a capacity modulation system utilizing a re-expansion chamber
10/2002
10/30/2002CN1093602C Floatation stopping device for closed compressor
10/08/2002US6461119 Lift valve for a rotary screw compressor
08/2002
08/15/2002US20020110459 Rotary vane pump
08/06/2002US6428285 Hydraulic delivery device
07/2002
07/02/2002US6413064 Pump
07/02/2002US6413063 Pump
06/2002
06/05/2002CN1086019C Reversible rotary compressor
04/2002
04/25/2002WO2000009887A3 Pump
04/25/2002EP1144867A3 Pump
01/2002
01/15/2002US6338616 Screw rotor compressor having a movable wall portion
10/2001
10/17/2001EP1144867A2 Pump
08/2001
08/29/2001EP1127220A1 Lift valve for a rotary screw compressor
08/09/2001US20010012486 Hydraulic delivery device
06/2001
06/20/2001EP1108144A1 Pump
05/2001
05/08/2001US6227816 Hydraulic delivery device
03/2001
03/07/2001EP0885358B1 Rotary piston pump
01/2001
01/11/2001WO2000009888A3 Pump
12/2000
12/13/2000CN1276486A Turbine-type vacuumizing pump
10/2000
10/24/2000US6135743 Rotary piston pump
05/2000
05/31/2000EP1003974A4 Cascaded progressing cavity pump system
05/31/2000EP1003974A2 Cascaded progressing cavity pump system
04/2000
04/06/2000WO2000019103A1 Lift valve for a rotary screw compressor
02/2000
02/24/2000WO2000009888A2 Pump
02/24/2000WO2000009887A2 Pump
12/1999
12/30/1999DE19927400A1 Hydraulic advancing unit, eg for use in vehicles
01/1999
01/26/1999US5862704 Retainer mechanism for an axial piston machine
12/1998
12/23/1998EP0885358A1 Rotary piston pump
12/10/1998WO1998055768A1 Pulsating capacity regulation system
10/1998
10/13/1998US5820354 Cascaded progressing cavity pump system
10/08/1998WO1998020259A3 Cascaded progressing cavity pump system
06/1998
06/24/1998CN1185542A Floatation stopping device for closed compressor
06/18/1998WO1998026182A1 Rotary piston pump
05/1998
05/28/1998DE19751994A1 Holding mechanism for axial piston machine
05/14/1998WO1998020259A2 Cascaded progressing cavity pump system
06/1996
06/04/1996US5522235 Reversible rotary compressor and reversible refrigerating cycle
03/1996
03/20/1996CN1118841A Reversible rotary compressor and reversible refrigerating cycle
05/1995
05/10/1995EP0652372A1 Reversible rotary compressor and reversible refrigerating cycle
03/1995
03/07/1995CA1334661C Valve arrangement for pump or compressor
12/1994
12/01/1994DE4317645A1 Regelbare Zahnradpumpe Adjustable gear pump
08/1994
08/02/1994US5334002 Gerotor pump with shiftable rotor boss
10/1993
10/28/1993WO1993021443A1 Variable output internal pump
10/13/1993EP0565340A1 Variable output internal pump
08/1993
08/17/1993US5236319 Adjustable displacement volume, plastic rings
12/1992
12/24/1992DE4218205A1 Controlling start of screw compressor to be driven by three-phase motor - measuring pressure produced by rotary movement of screw compressor and stopping drive motor if pressure is in contrast compared to normal pressure
12/02/1992EP0394383B1 Hose pump
07/1992
07/29/1992EP0395710B1 Valve arrangement for pump or compressor
05/1992
05/29/1992WO1992008895A1 Gerotor pumps
05/29/1992CA2095133A1 Gerotor pumps
05/20/1992EP0486164A1 Gerotor pumps
12/1991
12/04/1991EP0302877B1 Rotary positive displacement machine for a compressible working fluid
09/1991
09/17/1991US5049048 Hose pump
04/1991
04/09/1991CA1282753C Variable volume ratio screw compressor with step control
11/1990
11/07/1990EP0395710A1 Valve arrangement for pump or compressor.
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