US PATENT SUBCLASS 493 / 189
.~.~ Including heat sealing

Current as of: June, 1999
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493 /   HD   MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER MANUFACTURING FROM A SHEET OR WEB

51  DF  CONTAINER MAKING {2}
186  DF  .~ Pliable container (e.g., bag, envelope, etc.) {9}
189.~.~ Including heat sealing {9}
190  DF  .~.~.~> And cooling {1}
192  DF  .~.~.~> By direct application of fluid
193  DF  .~.~.~> Including supplying indeterminate length work {2}
199  DF  .~.~.~> And cutting, breaking, tearing, or abrading {2}
205  DF  .~.~.~> Heat sealing by means moving with work
206  DF  .~.~.~> By oppositely moving work gripping means
207  DF  .~.~.~> By yieldable, heated means
208  DF  .~.~.~> By rotary heat sealer
209  DF  .~.~.~> By reciprocatory heat sealer

DEFINITION

Classification: 493/189

Including heat sealing:

(under subclass 186) Method or apparatus combined with or comprising raising the thermal level of a surface of a workpiece causing that surface to be secured to another workpiece surface.

SEE OR SEARCH THIS CLASS, SUBCLASS:

41, for making a cigarette filter including application of heat to secure the wrapper thereto.

129+, for making a rigid container with application of adhesive and heat sealing.

133+, for making a rigid container including heat sealing.

274, for making a tube with coating and heating.

332, for making an article of this class, generally including application of adhesive and heating or drying.

341, for an operation of this including heat sealing combined with cutting, breaking, tearing, or abrading. 393, for securing a sheet or web workpiece and another workpiece by application of heat.