Overpressure safety valve

Details Overpressure safety valve Overpressure safety valve

1982-09-22

1985-03-05

Recla, Henry J.

Fluid handling

Line condition change responsive valves

Direct response valves

1374939, 137526, 137854, 12820524, 604118, 604247, 604129, F16K 17164

Patent

active

045025029

ABSTRACT:
An overpressure safety valve assembly for use during heart surgery is disclosed. The assembly comprises an elongated tubular body portion having an inlet end, and an outlet end and an unidirectional valve disposed therebetween. A relief valve portion is joined to and in flow communication with the tubular portion. The relief valve portion includes a first relief valve configured to open if the pressure within the overpressure safety valve diminishes below a predetermined level, and a second relief valve configured to open if the pressure adjacent the outlet end exceeds a predetermined level.

REFERENCES:
patent: 835075 (1906-11-01), Mahaffy
patent: 2376348 (1945-05-01), Fox
patent: 3425409 (1969-02-01), Isaacson et al.
patent: 3968897 (1976-07-01), Rodgers
patent: 3993059 (1976-11-01), Sjostrand
patent: 4067328 (1978-01-01), Manley
patent: 4267832 (1981-05-01), Hakkinen
patent: 4316458 (1982-02-01), Hammerton-Fraser
patent: 4324238 (1982-04-01), Genese et al.
Air Products, "Scaveng-Or Gas Evacuator Illustrations", Foregger Catalog, Jun. 1975.

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