Pumps – With condition responsive pumped fluid control – Bypass or relief valve carried by movable pumping member
Patent
1995-08-03
1998-12-08
Bertsch, Richard A.
Pumps
With condition responsive pumped fluid control
Bypass or relief valve carried by movable pumping member
417297, 417311, 417552, 417557, F04B 4900
Patent
active
058460608
ABSTRACT:
A pump which has a piston (30) which is reciprocatingly moved vertically inside a tubular housing (32) to extract fluid from the bottom of a well (29). The piston (30) is attached to a motor (12) for driving it and has a horizontally extending base plate (50) with a central opening (52) provided with a plug (64) functioning as a check valve. As the fluid is pumped, the plug (64) is raised and the fluid flows into a high pressure reservoir (35) above the base plate (50). When the pressure inside the reservoir (35) exceeds a specified level, the base plate (50) is moved downward against an upward biasing force. This opens an annular port (51) exposing bleed ducts (56) and allows some of the fluid in the reservoir (35) to flow back into low pressure chamber (37) located below the base plate (50). Grooves (43) are also provided on the peripheral surface of base plate (50) for allowing small amounts of fluid to continuously escape from the reservoir (35) as long as the fluid pressure in the reservoir (35) is higher than in the low pressure chamber (37). This allows the pump to idle at the start-up and hence starts the pump smoothly as well as preventing overpressure conditions.
REFERENCES:
patent: 989883 (1911-04-01), Snee
patent: 1156657 (1915-10-01), Beam
patent: 1177035 (1916-03-01), Humphrey et al.
patent: 1831411 (1931-11-01), Dietz
patent: 2057624 (1936-10-01), Burkhart
patent: 2136636 (1938-11-01), Rotter
patent: 2322120 (1943-06-01), Erickson
patent: 2804241 (1957-08-01), McDowall et al.
patent: 3771908 (1973-11-01), Rosen
patent: 4538970 (1985-09-01), Rabson
Yoshimoto Carlos Y.
Yoshimoto Ernesto Y.
Bertsch Richard A.
Kim Ted
Munro Jack C.
LandOfFree
Reciprocating piston pump with bleed passages does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reciprocating piston pump with bleed passages, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reciprocating piston pump with bleed passages will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-171042