US PATENT SUBCLASS 48 / 53
.~.~.~ Pop valve

Current as of: June, 1999
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48 /   HD   GAS: HEATING AND ILLUMINATING

*  DD  ACETYLENE {5}
*  DD  .~ Generators {5}
38  DF  .~.~ Carbide feed {11}
53.~.~.~ Pop valve {3}
53.1  DF  .~.~.~.~> Bell operated {1}
53.3  DF  .~.~.~.~> Diaphragm operated
53.4  DF  .~.~.~.~> Float operated

DEFINITION

Classification: 48/53

Carbid feed generators having valves caused to pass to and fro or through the discharge-opening of the carbid-hopper in a vertical plane.