US PATENT SUBCLASS 137 / 68.12
.~.~ Combined destructible and fusible element

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}
68.12.~.~ Combined destructible and fusible element

DEFINITION

Classification: 137/68.12

Combined destructible and fusible element:

(under subclass 68.11) Subject matter in which the element breaks and melts at a specific temperature to control the fluid flow or has, in addition to the destructible element, a separate element which melts at a specific temperature to control the fluid flow.