Rupturable low pressure relief apparatus

Details Rupturable low pressure relief apparatus Rupturable low pressure relief apparatus

1982-03-31

1984-03-06

Weakley, Harold W.

Receptacles

Container attachment or adjunct

Pressure relief means

137 68R, 137 69, B65B 2500

Patent

active

044349050

ABSTRACT:
Rupturable pressure relief apparatus are provided which are less subject to damage and premature failure as a result thereof and which reliably rupture at very low pressure differentials. The apparatus are adapted to be clamped between conventional pipe flanges or annular support members and are basically comprised of a first circular rupturable member formed of solid flexible material and a second circular rupturable member also formed of flexible material positioned adjacent the first rupturable member. The second rupturable member includes a solid annular flange portion and a plurality of arcuate slots circumscribing a substantially circular central portion wth rupture tabs between the arcuate slots. Knife means having a cutting edge forming at least a portion of a circle are positioned adjacent the second rupturable member on the side thereof opposite from the first rupturable member so that when the second rupturable member ruptures, the first rupturable member is severed by the knife means. Alternate embodiments add addtional rupturable members and knife means to cause the apparatus to rupture in either directon at low pressure differentials.

REFERENCES:
patent: 2954893 (1960-10-01), Hansen
patent: 3698598 (1972-10-01), Wood
patent: 3881629 (1975-05-01), Shaw
patent: 4119236 (1978-10-01), Shaw
patent: 4278181 (1981-07-01), Wood

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