Vacuum operated valve mechanism

Details Vacuum operated valve mechanism Vacuum operated valve mechanism

1979-03-29

1982-01-12

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

123327, 251 613, 251 615, 261DIG19, F16K 31128

Patent

active

043101410

ABSTRACT:
A vacuum operated valve mechanism for controlling transmission of fluid to servo means for emission control for an internal combustion engine or reducing emissions from the engine, including a single housing, a first and second diaphragm member, a first and second piston member, a pilot valve member and a working valve member.

REFERENCES:
patent: 2610819 (1952-09-01), Sutton
patent: 2824726 (1958-02-01), Dietrich et al.
patent: 2848202 (1958-08-01), Leibing
patent: 2933168 (1960-04-01), Leibing et al.
patent: 2993485 (1961-07-01), Cornelius
patent: 3364909 (1968-01-01), Mick
patent: 3465735 (1969-09-01), Francis et al.
patent: 3788291 (1974-01-01), Wu
patent: 4108197 (1978-08-01), Brakebill
patent: 4170971 (1979-10-01), Yamanaka

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