Method of making a valve sleeve

Details Method of making a valve sleeve Method of making a valve sleeve

1987-08-26

1989-01-24

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29557, 72370, B21D 5310

Patent

active

047993030

ABSTRACT:
A method of manufacturing a valve sleeve including the steps of providing a tubular member having a plurality of grooves extending axially along an inner surface of the tubular member through a pair of axially opposite end surfaces of the tubular member. The end surfaces extend radially outward from an inner surface of the tubular member to an outer surface. Each of the axially extending grooves have a base surface located between the inner and outer surfaces. The method also includes forcefully abutting a first punch against at least one of the end surfaces between the base surface of each groove and the outer surface to displace material of the end surface adjacent each groove radially inwardly of the inner surface. The method also includes then forcefully abutting a second punch against the displaced material of the end surface which extends radially inwardly of the inner surface and moving a portion of the displaced material axially and radially outwardly to form a seal land at an end of each groove.

REFERENCES:
patent: 1422655 (1922-07-01), Brehmer
patent: 1870970 (1932-08-01), Stevenson
patent: 2737831 (1956-03-01), Webb
patent: 4419877 (1983-12-01), Alfano
patent: 4535519 (1985-08-01), Kajikawa et al.
patent: 4543813 (1985-10-01), Rogers
patent: 4614014 (1986-09-01), Ferguson
patent: 4689864 (1987-09-01), Fukuma et al.

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