F04B - Positive-displacement machines for liquids; Pumps

More topics under "F04B - Positive-displacement machines for liquids; Pumps" (160,272)
F04B 1 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (10,723)
F04B 11 - Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation (1,551)
F04B 13 - Pumps specially modified to deliver fixed or variable measured quantities (2,234)
F04B 15 - Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts (3,388)
F04B 17 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors (9,703)
F04B 19 - Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups (2,867)
F04B 23 - Pumping installations or systems (4,078)
F04B 25 - Multi-stage pumps specially adapted for elastic fluids (1,208)
F04B 27 - Multi-cylinder pumpsspecially adapted for elastic fluids and characterised by number or arrangement of cylinders (7,781)
F04B 3 - Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage (444)
F04B 31 - Free-piston pumps specially adapted for elastic fluids; Systems incorporating such pumps (182)
F04B 33 - Pumps specially adapted for elastic fluids actuated by muscle power, e.g. for inflating (2,403)
F04B 35 - Piston pumpsspecially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for (9,373)
F04B 37 - Pumps specially adapted for elastic fluids and having pertinent characteristics not provided for in, or of interest apart from, groups (3,029)
F04B 39 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups (22,436)
F04B 41 - Pumping installations or systems specially adapted for elastic fluids (2,502)
F04B 43 - Machines, pumps, or pumping installations having flexible working members (13,111)
F04B 45 - Pumps or pumping installations having flexible working members and specially adapted for elastic fluids (2,191)
F04B 47 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps (5,485)
F04B 49 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups (22,036)
F04B 5 - Machines or pumps with differential-surface pistons (514)
F04B 51 - Testing machines, pumps, or pumping installations (2,128)
F04B 53 - Component parts, details or accessories not provided for in, or of interest apart from, groups or (19,443)
F04B 7 - Piston machines or pumps characterised by having positively-driven valving (2,226)
F04B 9 - Piston machines or pumps characterised by the driving or driven means to or from their working members (9,236)

Patents for F04B - Positive-displacement machines for liquids; Pumps (204)
05/2002
05/01/2002	CN1083941C 热回收装置 Heat recovery
03/2002
03/13/2002	CN1080830C Hermetic reciprocating compressor
12/2001
12/25/2001	US6332764 Displacement type fluid machine having an orbiting displacer forming a plurality of spaces and method for manufacturing same
12/25/2001	US6332763 Displacement type fluid machine having an orbiting displacer forming a plurality of spaces
11/2001
11/21/2001	EP1156220A2 Internal gear pump
09/2001
09/25/2001	US6293764 Reciprocating compressor with dry lubricating system
09/19/2001	CN1313470A Volume fluid machine
08/2001
08/29/2001	CN1310302A External pump
05/2001
05/22/2001	US6234773 Linear peristaltic pump with reshaping fingers interdigitated with pumping elements
04/2001
04/18/2001	EP0929744A4 Fluid displacement system
12/2000
12/26/2000	US6164941 Displacement type fluid machine having an orbiting displacer forming a plurality of spaces
12/21/2000	WO2000022299A3 Linear peristaltic pump with reshaping fingers interdigitated with pumping elements
12/12/2000	CA2201987C A device with coaxial, opposite, modular pistons with double eccentric cams or similar, for floated pumps
12/06/2000	CN1275697A Starting method for convertor heat pump
09/2000
09/20/2000	EP0647291B1 A gas compressor
04/2000
04/20/2000	WO2000022299A2 Linear peristaltic pump with reshaping fingers interdigitated with pumping elements
04/20/2000	CA2347500A1 Linear peristaltic pump with reshaping fingers interdigitated with pumping elements
03/2000
03/28/2000	US6042342 Fluid displacement system
11/1999
11/03/1999	EP0953113A1 Reciprocating compressor
10/1999
10/20/1999	CN1232527A Fluid displacement system
09/1999
09/01/1999	CN1227314A Fluid pump
08/1999
08/18/1999	CN1225981A Fluid pump
07/1999
07/21/1999	EP0929744A2 Fluid displacement system
02/1999
02/23/1999	CA2044950C Fuel feed pump
02/17/1999	CN2307924Y Improved silencer for refrigerator compressor
07/1998
07/23/1998	WO1998031936A1 Reciprocating compressor
07/22/1998	EP0854285A2 Pumping device, in particular for cement material
06/1998
06/30/1998	US5771693 Gas compressor
06/25/1998	WO1998016739A3 Fluid displacement system
05/1998
05/12/1998	US5749714 Muffler for a reciprocating compressor
04/1998
04/23/1998	WO1998016739A2 Fluid displacement system
04/23/1998	CA2266452A1 Fluid displacement system
03/1998
03/25/1998	EP0831230A2 Combined two-function air compressor and jet washer device
11/1997
11/12/1997	CN1164618A Positive-displacement type fluid machine
08/1997
08/20/1997	CN1157374A Hermetic reciprocating compressor
12/1996
12/04/1996	EP0745774A2 Variable-delivery pump
09/1996
09/04/1996	EP0592411B1 Apparatus for repetitively dispensing a measured volume of liquid
10/1995
10/25/1995	EP0678164A1 Radial pump
07/1995
07/12/1995	CN1105103A 气体压缩机 Gas compressor
04/1995
04/12/1995	EP0647291A1 A gas compressor
12/1994
12/27/1994	US5375982 Radial pump
07/1994
07/06/1994	EP0524922B1 Synchronization mechanism for radial piston machine
04/1994
04/20/1994	EP0592411A1 Apparatus for repetitively dispensing a measured volume of liquid.
03/1994
03/17/1994	WO1993024754A3 A gas compressor
01/1994
01/18/1994	US5279208 Rotary reciprocating engine with synchronization mechanism
12/1993
12/09/1993	WO1993024754A2 A gas compressor
12/09/1993	CA2136716A1 A gas compressor
10/1993
10/20/1993	CN1077521A Pumping apparatus
09/1993
09/19/1993	CA2090915A1 Pumping apparatus
09/08/1993	CN1076020A Method of and apparatus for dispensing a substance
02/1993
02/03/1993	EP0524922A1 Synchronization mechanism for radial piston machine.
12/1992
12/23/1992	EP0519880A1 Inlet shut-off valve for rotary piston vacuum pump
10/1992
10/11/1992	WO1992018769A1 Radial pump
10/11/1992	CA2106201A1 Radial pump
04/1992
04/28/1992	CA1299351C2 Scroll-type machine with rotation controlling means and specific wrap shape
04/01/1992	EP0478514A1 Variable delivery gear pump
12/1991
12/08/1991	WO1991019099A1 Apparatus for repetitively dispensing a measured volume of liquid
12/08/1991	CA2084675A1 Apparatus for repetitively dispensing a measured volume of liquid
10/1991
10/31/1991	WO1991016540A1 Synchronization mechanism
10/22/1991	CA1291094C Compressor unit for the production of compressed air
01/1991
01/08/1991	CA1278696C High sound insulating hollow clay tile for the construction of floors
12/1990
12/27/1990	EP0403829A2 Rotary compressor with oleopneumatic delivery control device
08/1990
08/08/1990	EP0289513B1 An arrangement for changing the pressure in pneumatic or hyd-raulic systems
07/1990
07/17/1990	CA1271732A1 Scroll-type machine with rotation controlling means and specific wrap shape
05/1990
05/08/1990	US4923375 Hose pump, in particular an insulin pump
04/1990
04/10/1990	US4915126 Method and arrangement for changing the pressure in pneumatic or hydraulic systems
12/1989
12/20/1989	EP0222849B1 A hose pump, in particular an insulin pump
07/1989
07/04/1989	US4844702 Lubrication circuit of rotary vacuum pumps
06/1989
06/21/1989	EP0320684A2 Control apparatus for rotary air compressors
06/20/1989	CA1255965A1 Pump with continuous inflow and pulsating outflow
11/1988
11/09/1988	EP0289513A1 An arrangement for changing the pressure in pneumatic or hyd-raulic systems.
08/1988
08/10/1988	EP0277924A2 Improvement to the lubrication circuit of rotary vacuum pumps
06/1988
06/14/1988	US4750868 Pump with continuous inflow and pulsating outflow
06/08/1988	EP0128197B1 Pump actuator
05/1988
05/10/1988	US4742660 Highly sound insulating hollow clay tile for the construction of floors
12/1987
12/02/1987	EP0179793B1 Hydraulic piston pump for pumping liquids
10/1987
10/21/1987	CN86100642A Rotary electromotive compressor
07/1987
07/30/1987	WO1987004499A1 A method and arrangement for changing the pressure in pneumatic or hydraulic systems
06/1987
06/09/1987	US4671748 Compressor unit for the production of compressed air
05/1987
05/06/1987	EP0221034A1 Pump with continuous inflow and pulsating outflow
03/1987
03/26/1987	WO1987001769A1 Pump with continuous inflow and pulsating outflow
02/1987
02/12/1987	EP0128197A4 Pump actuator.
01/1987
01/29/1987	DE3623330A1 Centrifugal compressor
11/1986
11/20/1986	WO1986006796A1 A hose pump, in particular an insulin pump
05/1986
05/07/1986	EP0179793A1 Hydraulic piston pump for pumping liquids.
02/1986
02/12/1986	EP0171367A1 Compressor unit for the production of compressed air
02/11/1986	US4569636 Device for regulating the delivery of rotary compressors
10/1985
10/24/1985	WO1985004691A1 Hydraulic piston pump for pumping liquids
12/1984
12/19/1984	EP0128197A1 Pump actuator.
06/1984
06/13/1984	EP0110552A1 Improvements in or relating to pumps for dispensing beverages
06/07/1984	WO1984002164A1 Pump actuator
06/1983
06/28/1983	CA1148791A1 Combined lift and metering pump
02/1983
02/15/1983	US4373882 Discharge valve assembly for compressor
02/01/1983	CA1140392A1 Variable displacement pump
08/1982
08/31/1982	CA1130652A1 Reversing pump eccentric member
07/1982
07/20/1982	US4340337 Positive displacement pump systems
11/1981
11/03/1981	US4298315 Positive displacement pump systems
03/1981
03/10/1981	US4255093 Combined lift and metering pump
03/1980
03/18/1980	US4193747 Reversing pump eccentric member
02/1980
02/05/1980	CA1071024A1 Power transmission

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