Valve for an oral evacuator system

Details Valve for an oral evacuator system Valve for an oral evacuator system

1976-02-23

1978-03-28

Cline, William R.

Valves and valve actuation

Valve actuator is valve casing or extension thereof

Jointed or flexible wall

32 33, 251347, 251348, 251353, 251354, 251321, 128276, F16K 3100

Patent

active

040811760

ABSTRACT:
A specific embodiment provides a valve structure for an evacuator system adapted to be connected to a source of negative pressure. The valve structure includes an elongated housing having a longitudinal bore extending through the housing, and a valve seat formed by a reduced diameter portion of the bore. A valve member is situated in the bore for abutting engagement with the valve seat to prevent passage of flowable materials therebetween. Biasing means is provided for urging the valve member into abutting engagement with the valve seat. A manually operable member is operatively associated with the biasing means for moving the valve member out of engagement with the valve seat to permit passage of flowable materials therebetween.

REFERENCES:
patent: 2161135 (1939-06-01), Chappell
patent: 2208032 (1940-07-01), Hooper
patent: 2623787 (1952-12-01), Smith
patent: 2623790 (1952-12-01), Smith
patent: 2799471 (1957-07-01), Maroney
patent: 3183934 (1965-05-01), Miner
patent: 3609783 (1971-10-01), Cooke
patent: 3971541 (1976-07-01), Griffin

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