US PATENT SUBCLASS 137 / 68.19
.~.~ Rupture disc

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

67  DF  DESTRUCTIBLE OR DEFORMABLE ELEMENT CONTROLLED {2}
68.11  DF  .~ Destructible element {9}
68.19.~.~ Rupture disc {6}
68.21  DF  .~.~.~> Means for holding entire disc after rupture
68.22  DF  .~.~.~> Disc burst after destruction of additional element
68.23  DF  .~.~.~> Direct pressure causes disc to burst {2}
68.27  DF  .~.~.~> Specific weakening point
68.28  DF  .~.~.~> Integral disc assembly
68.29  DF  .~.~.~> Knife or cutter causes disc to break {1}

DEFINITION

Classification: 137/68.19

Rupture disc:

(under subclass 68.11) Subject matter where the destructible element is a diaphragm or seal that holds fluid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

72, for a fluid-controlled fusible diaphragm.

SEE OR SEARCH CLASS

220, Receptacles,

89.2+, for a receptacle that is a frangible diaphragm within a container or vessel.