US PATENT SUBCLASS 137 / 68.11
.~ Destructible element

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

67  DF  DESTRUCTIBLE OR DEFORMABLE ELEMENT CONTROLLED {2}
68.11.~ Destructible element {9}
68.12  DF  .~.~> Combined destructible and fusible element
68.13  DF  .~.~> Explosive actuation
68.14  DF  .~.~> Separable valve coupling or conduit {1}
68.16  DF  .~.~> Tensile or sheer pin or bolt {1}
68.18  DF  .~.~> With alarm or indicator
68.19  DF  .~.~> Rupture disc {6}
69  DF  .~.~> With counterbalancing element
70  DF  .~.~> Frangible element returns pressure responsive valve
71  DF  .~.~> Having pressure responsive valve

DEFINITION

Classification: 137/68.11

Destructible element:

(under subclass 67) Subject matter in which the fluid flow control element is physically broken by having a force acting directly upon it.

SEE OR SEARCH THIS CLASS, SUBCLASS:

797, for frangible elements, the breaking of which do not control any flow of fluid.

SEE OR SEARCH CLASS

222, Dispensing,

80+, for dispensers having a cutter or punch associated therewith.