US PATENT SUBCLASS 373 / 81
.~.~ Top charging

Current as of: June, 1999
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373 /   HD   INDUSTRIAL ELECTRIC HEATING FURNACES

60  DF  ARC FURNACE DEVICE {9}
79  DF  .~ Charging or discharging {4}
81.~.~ Top charging {1}
82  DF  .~.~.~> Through electrode

DEFINITION

Classification: 373/81

Top charging:

(under subclass 79) Subject matter including specific means to charge the furnace from the top.

(1) Note. This subclass includes furnaces having chutes for charging extending through the roof as well as furnaces having a movable roof to open the furnace for charging.