Valves and valve actuation – Limit stop
Patent
1989-09-05
1990-03-20
Rivell, John
Valves and valve actuation
Limit stop
251295, 251904, F16K 5102
Patent
active
049094777
ABSTRACT:
A vacuum dump valve comprises a housing having a cylindrical cavity therein communicating with ambient pressure and with a vacuum line, and a plunger in said cavity having a pair of diametrically spaced tabs acceptable in a pair of slots in said housing to limit travel and guide the plunger relative to the housing.
REFERENCES:
patent: 891672 (1908-06-01), Crane
patent: 2179165 (1939-11-01), Sifkovitz
patent: 3181555 (1965-05-01), Jacobson
patent: 3203665 (1965-08-01), Grant et al.
patent: 3826467 (1974-07-01), Hart et al.
patent: 4159103 (1979-06-01), Jordan
patent: 4413804 (1983-11-01), Lanius et al.
patent: 4449692 (1984-05-01), Rhodes
patent: 4750707 (1988-06-01), Johncox et al.
Microdot Inc.
Rivell John
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