US PATENT SUBCLASS 34 / 457
.~.~.~.~.~ With guide roller

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

282  DF  PROCESS {24}
443  DF  .~ Gas or vapor contact with treated material {17}
444  DF  .~.~ Sheet, web, or strand {7}
454  DF  .~.~.~ With contact with heat exchanger (e.g., drum or roller) {2}
455  DF  .~.~.~.~ Pocket ventilator {2}
457.~.~.~.~.~ With guide roller

DEFINITION

Classification: 34/457

With guide roller:

(under subclass 455) Process wherein a cylinder contacts the web being treated primarily for the purpose of directing the treated web through a series of treating drums.

(1) Note. It is possible to have heat exchange or vapor contact with the web by contact with a guide roller. However, this function would be secondary to its intended purpose of directing the web through the major treatment drums.