Non-stick glass stopcock

Details Non-stick glass stopcock Non-stick glass stopcock

1983-01-28

1985-04-23

Schwadron, Martin P.

Fluid handling

With casing, support, protector or static constructional...

Jacketed

251309, 403383, F16L 700

Patent

active

045123640

ABSTRACT:
A non-stick glass stopcock includes a sleeve interposed between a stem tapered body and a tapered valve seat. The sleeve permits operation of the stopcock while eliminating the need for any grease to be located between the stem and valve seat tapered portions. The adjustment mechanism maintains adjustment when the stopcock moves between open and closed positions.

REFERENCES:
patent: 1538346 (1925-05-01), Mueller
patent: 1829365 (1931-10-01), Meyer
patent: 3589677 (1971-06-01), Segers
patent: 3782686 (1974-01-01), Cowie
patent: 4285498 (1981-08-01), Nightingale
patent: 4410003 (1983-10-01), Sandling

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