US PATENT SUBCLASS 48 / 43
.~.~.~ Flap 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}
43.~.~.~ Flap valve

DEFINITION

Classification: 48/43

Carbid-feed generators having flap valves hinged at or near the mouth of the chute or hopper through which the carbid passes, automatically operated to feed the carbid.