Pumps – Expansible chamber type – Valved piston
Patent
1978-09-20
1981-01-06
Freeh, William L.
Pumps
Expansible chamber type
Valved piston
F04B 2104, F04B 2102
Patent
active
042433614
ABSTRACT:
An apparatus for connection to an oil well pump to improve its performance. The oil well pump is of the type having a traveling valve located within a barrel at the end of a string of production tubing and reciprocated by a string of sucker rods in the tubing. The apparatus includes a sub connected to the lower end of the production tubing. The barrel with a pump plunger and traveling valve is attached below the sub. The sub has a central passage and several valve passages. A tube is secured to the central passage. A piston reciprocates in the tube and is connected to the sucker rods at the top and to the pump plunger below. Standing valves are secured to the tops of the valve passages to allow only upward flow, isolating the pump plunger from the production column on the downstroke.
REFERENCES:
patent: 974342 (1910-11-01), Bell
patent: 1374923 (1921-04-01), Hunt
patent: 1512500 (1924-10-01), Swartz
patent: 2464347 (1949-03-01), Roofe
patent: 2538592 (1951-01-01), Pratt
patent: 2544094 (1951-03-01), Knowles
patent: 2689534 (1954-09-01), Mack
patent: 3076416 (1963-02-01), Schmidt
patent: 3143080 (1964-04-01), Sufliff
patent: 3146725 (1964-09-01), Harris
patent: 3586464 (1971-06-01), Crowe
patent: 3773437 (1973-11-01), Suman
patent: 4049365 (1977-09-01), Sparks
Bradley James E.
Freeh William L.
Oil Extractors, Inc.
LandOfFree
Standing valve assembly for an 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 Standing valve assembly for an oil well pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Standing valve assembly for an oil well pump will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-282710