US PATENT SUBCLASS 53 / 373.9
.~.~.~.~ Comprising means to force heated fluid to contact cover

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

285  DF  CLOSING PACKAGES AND FILLED RECEPTACLES {7}
373.2  DF  .~ By means adapted to engage outturned seam of package cover {6}
373.7  DF  .~.~ With means to heat or cool seam {5}
373.8  DF  .~.~.~ Spaced from cover during heating or cooling {1}
373.9.~.~.~.~ Comprising means to force heated fluid to contact cover

DEFINITION

Classification: 53/373.9

Comprising means to force heated fluid to contact cover:

(under subclass 373.8) Apparatus wherein thermal energy is supplied to or removed by a flowable medium directed into engagement with the surfaces of the cover that are being treated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

373.8, for closing a package or filled receptacle with means to heat by radiant energy.