Valve for an oral evacuator system

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

1975-07-01

1977-04-05

Cline, William R.

Surgery

Truss

Pad

128276, 251347, 251348, A61C 1704

Patent

active

040153363

ABSTRACT:
A specific embodiment provides a valve structure for an oral 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, a valve seat formed by a reduced diameter portion of the bore, and a slot extending through the housing to the bore and longitudinally of the housing. A valve member is situated in the bore for abutting engagement with the valve seat to prevent passage of flowable materials therebetween. A spring is provided for biasing the valve member into abutting engagement with the valve seat, and the spring includes an offset portion extending outwardly through the slot. A manually operable member is connected to the offset spring portion for moving the offset spring portion to compress the spring and thereby move the valve member out of engagement with the valve seat to permit passage of flowable materials therebetween.

REFERENCES:
patent: 697109 (1902-04-01), Strong
patent: 2163925 (1939-06-01), Wagner
patent: 2208031 (1940-07-01), Hooper
patent: 3015469 (1962-01-01), Falk
patent: 3071402 (1963-01-01), Lasto et al.
patent: 3146987 (1964-09-01), Krayl
patent: 3645497 (1972-02-01), Nyboer

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