Butterfly valve

Details Butterfly valve Butterfly valve

1976-02-25

1978-09-05

Schwadron, Martin P.

Valves and valve actuation

Rotary valves

Butterfly

251208, 251308, 251314, 251367, F16K 122

Patent

active

041113950

ABSTRACT:
There is disclosed a butterfly-type valve cooperable with a valve seat element formed of an elastomeric material, wherein this element also forms a seal between two identical housing halves. There is also disclosed an improved method of making such a valve, as well as a vacuum motor for actuating the valve which incorporates a linkage mechanism having force limiting means to prevent the application of excessive forces to this valve.

REFERENCES:
patent: 2011641 (1935-08-01), Kruse
patent: 2315775 (1943-04-01), D'Arcey
patent: 3100500 (1963-08-01), Stillwagon
patent: 3143132 (1964-08-01), Pangburn
patent: 3173650 (1965-03-01), Cotterman et al.
patent: 3215400 (1965-11-01), Muller
patent: 3233861 (1966-02-01), Stillwagon
patent: 3241806 (1966-03-01), Snell, Jr.
patent: 3262683 (1966-07-01), Ball et al.
patent: 3298677 (1967-01-01), Anderson
patent: 3321194 (1967-05-01), Carlson
patent: 3475007 (1969-10-01), Fawkes
patent: 3565394 (1971-02-01), Smith
patent: 3568975 (1971-03-01), Obermaier
patent: 3642247 (1972-02-01), Scaramucci
patent: 3675681 (1972-07-01), Obermaier
patent: 3857406 (1974-12-01), Dorling

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