Safety pressure relief device

Details Safety pressure relief device Safety pressure relief device

1978-08-25

1981-07-14

Moy, Joseph Man-Fu

Receptacles

Container attachment or adjunct

Pressure relief means

13 68R, F16K 1740

Patent

active

042781817

ABSTRACT:
A safety pressure relief device is provided for the venting of fluid pressure between first and second pressure zones. The relief device includes a first rupture disk having a flexible sealing membrane located on one side thereof, and a knife means located on the other side of the first rupture disk. The first rupture disk includes a plurality of arcuate slots circumscribing a substantially circular blowout portion. The knife means includes a circular cutting blade located radially inward of the arcuate slots. Upon rupture of the first rupture disk, due to excess pressure in the second pressure zone, the substantially circular blowout portion passes through a circular opening in the knife means, allowing the flexible sealing membrane to contact the cutting blade and be severed thereby. Alternative embodiments add a second rupture disk to relieve excess fluid pressure from the first pressure zone to the second pressure zone.

REFERENCES:
patent: 3685686 (1972-08-01), Raidl
patent: 3693691 (1972-09-01), Summers
patent: 3698598 (1972-10-01), Wood et al.
patent: 3722734 (1973-03-01), Raidl, Jr.
patent: 4158422 (1979-06-01), Witten et al.

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