US PATENT SUBCLASS 431 / 21
.~ By combustion destructible element, e.g., fusible plug, etc.


Current as of: June, 1999
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431 /   HD   COMBUSTION

18  DF  TIMER, PROGRAMMER, RETARDER OR CONDITION RESPONSIVE CONTROL {26}
21.~ By combustion destructible element, e.g., fusible plug, etc.


DEFINITION

Classification: 431/21

(under subclass 18) Apparatus in which a control actuation results from the destruction of a heat fusible or consumable connection responsive to heat of combustion.

SEE OR SEARCH CLASS

122, Liquid Heaters and Vaporizers,

504.1, and 504.3 for a fusible type safety device in a boiler.

126, Stoves and Furnaces,

287.5, for a stove having a fusible release damper.

137, Fluid Handling, 72+, for a heat destructible or fusible control element in a fluid handling system of general utility.