Safety pressure relief device

Details Safety pressure relief device Safety pressure relief device

F - Mech Eng,Light,Heat,Weapons

16

K

137/4.1

F16K 17/16 (2006.01)

Patent

CA 1110138

SAFETY PRESSURE RELIEF DEVICE Abstract of the Disclosure A safety pressure relief device including a rupture disk having a concave-convex portion and a radially outer flange portion joined by a curved transition connection. An improved knife means is located adjacent the concave side of said rupture disk, said knife means including a radially outer flange portion which supports said curved transition connection. A substantially circular inner opening is disposed in said knife means. Said knife means includes first and second spaced cutting means project- ing radially inward into said opening and inclined towards said concave portion of said rupture disk. Said knife means further includes first and second arcuate non-cutting portions each partially defining said inner opening. The first cutting means is located between said first and second non-cutting portions so that upon reversal of said rupture disk said first and second cutting means will puncture said rupture disk without severing a portion of the disk there- from.

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