US PATENT SUBCLASS 110 / 110
.~.~.~ Screw

Current as of: June, 1999
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110 /   HD   FURNACES

101 R  DF  FUEL FEEDERS {15}
108  DF  .~ Hopper {1}
*  DD  .~.~ Pusher {2}
110.~.~.~ Screw

DEFINITION

Classification: 110/110

(under subclass 108) Devices that push the fuel into the body of fuel in the firebox by a rotary screw.