US PATENT SUBCLASS 53 / 377.7
.~.~ With means to heat or cool flap

Current as of: June, 1999
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53 /   HD   PACKAGE MAKING

285  DF  CLOSING PACKAGES AND FILLED RECEPTACLES {7}
376.3  DF  .~ Package or receptacle having closure flap, e.g., carton flap, box lid, etc. {6}
377.7.~.~ With means to heat or cool flap {1}
377.8  DF  .~.~.~> With means to advance package during closing

DEFINITION

Classification: 53/377.7

With means to heat or cool flap:

(under subclass 376.3) Apparatus in which means is provided to apply or remove thermal energy from engaging surfaces of the cover.

SEE OR SEARCH THIS CLASS, SUBCLASS:

373.7+, for apparatus having means to apply or remove heat from an outturned seam without a pleat, and see the notes thereto for heat sealing elsewhere classified.

477, for a method of closing a package or filled container by heat sealing.

SEE OR SEARCH CLASS

219, Electric Heating, for heating by electrical resistance, especially

59.1+, and 78.16, respectively, for heating a metal tube by the use of electrically generated heat, and subclasses 603+ for inductive heating of metal tubes.