Flapper valve with protective hinge pin sleeve

Details Flapper valve with protective hinge pin sleeve Flapper valve with protective hinge pin sleeve

1988-01-11

1989-05-02

Rivell, John

Fluid handling

Line condition change responsive valves

Direct response valves

137527, F16K 1503

Patent

active

048259020

ABSTRACT:
A flapper valve with a protective hinge pin sleeve. The valve includes a flapper assembly having a flapper with the protective hinge pin sleeve disposed through an ear of the flapper. The hinge pin sleeve is preferably made of a relatively harder material than the flapper to reduce wear on the flapper as the flapper assembly is pivoted on a pivot pin. One embodiment of a flapper valve for use in a down hole tool is disclosed.

REFERENCES:
patent: 2537099 (1951-01-01), Smith
patent: 2637264 (1953-05-01), Harmon
patent: 3016914 (1962-01-01), Keithahn
patent: 3144876 (1964-08-01), Frye
patent: 3292653 (1966-12-01), Scaramucci
patent: 3348569 (1967-10-01), Frye
patent: 3481397 (1969-12-01), Baker
patent: 3965926 (1976-06-01), Buckner
patent: 4474241 (1984-10-01), Freeman
patent: 4605041 (1986-08-01), Teumer
Halliburton Services Sales and Service Catalog No. 43, p. 2431.
Weatherford Float and Guide Equipment Catalog, p. 20.
Davis-Lynch, Inc., 1984-1985 Catalog, p. 28.
Gemoco Float Equipment Catalog, p. 17.
Corken International Corp. Service Manual pp. H104F and H105F.

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