Universal plunger for oil well pumps

Details Universal plunger for oil well pumps Universal plunger for oil well pumps

1990-10-29

1992-06-09

Bertsch, Richard A.

Pumps

Expansible chamber type

Valved piston

417553, 417552, 417545, 92174, 2853322, F04B 2104, F04B 3910, F01B 3100, F16L 2500

Patent

active

051202034

ABSTRACT:
A universal plunger for oil well pumps, which universal plunger includes a symmetrical plunger body having a longitudinal bore, a pair of threaded flange nipples projecting from end flanges located on each end of the plunger body, a pair of spaced O-ring seats provided inwardly of the end flanges, respectively, the O-rings seated in the O-ring seats, a plunger body segment of reduced diameter extending between the inner sets of O-rings and a "Teflon"-hydrocarbon composition disposed between the spaced inside O-rings, the plunger body segment and that portion of the inside surface of the oil well pump barrel which faces the plunger body segment, for sealing and lubricating the universal plunger in the pump barrel.

REFERENCES:
patent: 530350 (1894-12-01), Rosenkranz
patent: 1624798 (1927-04-01), Neilson
patent: 1679625 (1928-08-01), Penrod et al.
patent: 2234056 (1941-03-01), Moore
patent: 2342834 (1944-02-01), Brant
patent: 3075474 (1963-01-01), Kelley
patent: 4026583 (1977-05-01), Gottlieb
patent: 4841846 (1989-06-01), Grambling

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