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Class Information
Number: 417/382
Name: Pumps > Motor driven > Fluid motor > With motive fluid generator > Plural pumping members; one additionally supplying motive fluid for second
Description: Apparatus including a plurality of pumping members which pump fluid for external use, one of said pumping members also additionally supplying motive fluid for a fluid motor which drives another pumping member.

Patents under this class:

Patent Number Title Of Patent Date Issued
8496449 Air driven hydraulic pump Jul. 30, 2013
8341955 Hydraulic drive and control system for pumps using a charge pump Jan. 1, 2013
8087906 Fluid pump with disposable component Jan. 3, 2012
7766079 Pumping installation for a gas producing well Aug. 3, 2010
7527483 Expansible chamber pneumatic system May. 5, 2009
6981850 Apparatus and method for producing a pressurized vapor stream Jan. 3, 2006
6824364 Master/slave pump assembly employing diaphragm pump Nov. 30, 2004
4730990 Pulse combustion engine and heat transfer system Mar. 15, 1988
4693227 Multi-fuel injection system for an internal combustion engine Sep. 15, 1987
4590904 Fuel injection apparatus May. 27, 1986
4569640 Device for high pressure compression Feb. 11, 1986
4067665 Turbine booster pump system Jan. 10, 1978
3930756 Metering pulse pump Jan. 6, 1976

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