Oil well pump with resilient plunger cup means

Details Oil well pump with resilient plunger cup means Oil well pump with resilient plunger cup means

1974-05-13

1976-03-30

Croyle, Carlton R.

Pumps

Expansible chamber type

Valved piston

92257, F04B 2104, F04B 3910

Patent

active

039471586

ABSTRACT:
An oil well subsurface pump comprising a plunger reciprocally disposed within a working barrel and having check valve means carried thereby, metallic ring means provided on the outer periphery of the plunger for engaging the inner periphery of the working barrel, resilient sleeve or cup means disposed around the outer periphery of the plunger and having one end in engagement with the ring means, means threadedly secured to the outer periphery of the plunger for engaging the opposite end of the resilient means for applying selected longitudinal pressure thereon for radial expansion thereof into engagement with the inner periphery of the working barrel.

REFERENCES:
patent: 262953 (1882-08-01), Jarecki
patent: 464418 (1891-12-01), Bird
patent: 1027665 (1912-05-01), Parker
patent: 1133270 (1915-03-01), Dale
patent: 1503652 (1924-08-01), Howe et al.
patent: 2199950 (1940-05-01), Flinchum
patent: 2279238 (1942-04-01), Larson

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