Continental Disc Corporation

Kenneth R Shaw

Franklin A Hansen

Donald M Shegrud

A safe pressure relief assembly of the reverse acting rupture disc type guards against very low pressure differentials and includes a thin, bulged sealing disc, a cutting member positioned in spaced relation to the sealing disc and extending a substantial transverse distance thereacross and a sealing disc support member having a stay arrangement projecting into supporting engagement with the concave side of the sealing disc, the stay arrangement having a resistance to collapse sufficient to retain the sealing disc out of contact with the cutting member only up to a predetermined differential pressure.

Low pressure rupture device

A safety pressure relief device of the rupture disc type includes a molded body rupture disc protected on surfaces exposed to a process line by combining with a protective liner or boot to prevent corrosion and inhibit temperature deterioration of the disc body, binder therein and/or leakage of materials therethrough. The liner, in one form, embraces the otherwise exposed surfaces of the rupture disc in absence of trapped air which is removed when the liner is engaged therewith. An alternate embodiment of the liner employs corrugated sides which flexibly and extendibly conform.

Protected molded rupture disc

A safe pressure relief assembly of the rupture disc type guards against pressure differentials beyond a predetermined range extending both above and below zero and includes a positive relief disc which is perforated to permit negative flow without rupturing, a sealing disc normally blocking the perforations, a cutting member positioned in spaced relation to the sealing disc and extending a substantial transverse distance thereacross and a sealing disc support member having a stay arrangement projecting into negative supporting engagement with the sealing disc, the stay arrangement having a resistance to collapse sufficient to retain the sealing disc out of contact with the cutting member only up to a predetermined negative pressure. The subcombination of sealing disc, stay arrangement and cutting member is separately useful, especially as a very low pressure relief device.

Growing community of inventors

Riverside, MO, United States of America

Kenneth R Shaw