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Class Information
Number: 417/386
Name: Pumps > Motor driven > Fluid motor > With motive fluid generator > Pulsator or fluid link > With means to supply or vent pulsator fluid > Working member position responsive
Description: Apparatus in which the means for supplying or exhausting fluid is made effective in response to the attainment of a predetermined position by the fluid motor working member.










Patents under this class:

Patent Number Title Of Patent Date Issued
8517700 Submersible pump Aug. 27, 2013
8167586 Valve assembly with low resistance pilot shifting May. 1, 2012
8096789 Simplified cleaning and filling device with a piston Jan. 17, 2012
7665974 Diaphragm pump position control with offset valve axis Feb. 23, 2010
7654801 Hydraulically-actuated diaphragm pump with a leak compensation device Feb. 2, 2010
7425120 Diaphragm position control for hydraulically driven pumps Sep. 16, 2008
7090474 Diaphragm pump with overfill limiter Aug. 15, 2006
6899530 Diaphragm pump with a transfer chamber vent with a longitudinal notch on the piston cylinder May. 31, 2005
6886720 Metering device May. 3, 2005
6736611 Aircraft fluid delivery device May. 18, 2004
6726458 High pressure pump with filler plug Apr. 27, 2004
6672841 Pumping and metering device Jan. 6, 2004
6422834 Reversing valve for a diaphragm pump Jul. 23, 2002
6419463 Reversing valve for a diaphragm pump Jul. 16, 2002
6386841 Pneumatically operated hydraulic pump May. 14, 2002
6276907 Hydraulically driven diaphragm pump Aug. 21, 2001
6264437 High pressure pump for all liquids Jul. 24, 2001
6071089 Hydraulic diaphragm pump Jun. 6, 2000
6004105 Diaphragm pump with adjustable stroke length Dec. 21, 1999
5707219 Diaphragm pump Jan. 13, 1998
5655893 Bellows pump Aug. 12, 1997
5624246 Hydraulic ammonia solution pump Apr. 29, 1997
5584664 Hydraulic gas compressor and method for use Dec. 17, 1996
5547351 Low pressure low volume liquid pump Aug. 20, 1996
5332372 Modular double-diaphragm pump Jul. 26, 1994
5281107 Control system for piston membrane pump Jan. 25, 1994
5249932 Apparatus for controlling diaphragm extension in a diaphragm metering pump Oct. 5, 1993
5088901 Membrane pump with a freely oscillating metal membrane Feb. 18, 1992
5032064 Pump for pressure exceeding one thousand atmospheres Jul. 16, 1991
4966528 Apparatus for controlling the hydraulic circuit of a piston diaphragm pump Oct. 30, 1990
4730990 Pulse combustion engine and heat transfer system Mar. 15, 1988
4685510 Pulse combustion engine and heat transfer system Aug. 11, 1987
4573885 Piston diaphragm pump Mar. 4, 1986
4492534 Fuel injection pump for internal combustion engine Jan. 8, 1985
4465438 Piston diaphragm pump Aug. 14, 1984
4450813 Distribution type fuel injection pump May. 29, 1984
4436492 Surface power unit for a downhole pump Mar. 13, 1984
4416599 Diaphragm pump with compensation means in the hydraulic control chamber Nov. 22, 1983
4199535 Diaphragm pump Apr. 22, 1980
4050859 Diaphragm pump having a reed valve barrier to hydraulic shock in the pressurizing fluid Sep. 27, 1977
4025124 Regulatable pump device May. 24, 1977
4019837 Pressure unloading apparatus for a diaphragm pump Apr. 26, 1977











 
 
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