Sealing rings for spool valves

Details Sealing rings for spool valves Sealing rings for spool valves

1994-10-14

1997-03-11

Cummings, Scott W.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

2771673, 277206H, 277215, 13762566, 13762569, F16J 1532

Patent

active

056093438

ABSTRACT:
Provision of constrictions imparts to a sealing ring for spool valves both needing flexibility and sufficient strength to remain undetached from the spool in the spool valves. The constrictions to impart flexibility are provided on the outside of the center of the band width of the sealing ring. The ring is of a greater axial thickness on a radially inner side thereof than at the constrictions so as to be firmly fitted in a groove of the spool.

REFERENCES:
patent: 3635249 (1972-01-01), Kirkman
patent: 3968971 (1976-07-01), Mariaulle
patent: 4240467 (1980-12-01), Blatt et al.
patent: 5088745 (1992-02-01), Peppiatt et al.
patent: 5127661 (1992-07-01), Franson et al.
patent: 5171025 (1992-12-01), Stoll et al.
patent: 5261677 (1993-11-01), Gotoh et al.
patent: 5277327 (1994-01-01), Nakano et al.
patent: 5337787 (1994-08-01), Fiondella

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