Pumps – Expansible chamber type – Valved piston
Patent
1978-08-28
1980-10-21
Freeh, William L.
Pumps
Expansible chamber type
Valved piston
92258, F04B 2104, F04B 3910
Patent
active
042291496
ABSTRACT:
An oil well subsurface pump comprising a housing having one end thereof adapted to be secured to the lowermost end of a sucker rod, or the like, and the opposite end thereof in open communication with the fluid reservoir in a well bore, a ball check valve carried by the housing, a ball stop member disposed within the housing for limiting the movement of the ball member in one direction and having ports therein for passage of fluid upwardly through the housing, resilient sealing assembly interposed between the outer periphery of the housing and the inner periphery of the barrel and slidable with respect to the barrel during a pumping operation, and discharge ports provided in the housing in spaced relation to the sealing assembly for directing well fluid from the interior of the housing to the annulus between the housing and the working barrel for transportation of the fluid to the surface of the well bore.
REFERENCES:
patent: 1977075 (1934-10-01), Magnuson
patent: 2063839 (1936-12-01), Crooks et al.
patent: 2188106 (1940-01-01), Caldwell
patent: 2536836 (1951-01-01), Bowling
patent: 3282594 (1966-11-01), Wheeler
patent: 3947158 (1976-03-01), Gage
LandOfFree
Oil well pump does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Oil well pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oil well pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2020887