US PATENT SUBCLASS 34 / 640
.~.~.~.~.~ Fluid current support or guide

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

523  DF  APPARATUS {40}
611  DF  .~ Sheet, web, or strand {3}
618  DF  .~.~ For flexible sheet, web, or strand {6}
623  DF  .~.~.~ Running length {5}
629  DF  .~.~.~.~ With gas or vapor circulation for contact with treated material {15}
640.~.~.~.~.~ Fluid current support or guide {3}
641  DF  .~.~.~.~.~.~> Having airfoil or Coanda nozzle
642  DF  .~.~.~.~.~.~> Having nozzles around circular manifold
643  DF  .~.~.~.~.~.~> Having nozzles on opposite sides of web {1}

DEFINITION

Classification: 34/640

Fluid current support or guide:

(under subclass 629) Subject matter including means to direct or suspend the running length by means of a fluid blast or flow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

117, and 120, for means for threading, stripping, or guiding a web in conjunction with drum dryers including fluid current guiding means.

576+, for similar apparatus for treating other material, and subclasses 359+ for a similar process.

SEE OR SEARCH CLASS

226, Advancing Material of Indeterminate Length, may include a nominal recitation of a supply or take-up coil (e.g., less than a support for such a coil or a cooperative relationship between a tension or exhaust detector and reel driving or reel stopping means, etc.),

97.1+, for fluid current means to advance the material.

242, Winding, Tensioning, or Guiding, for more than a nominal supply or take-up coil structure (e.g., a support for such a coil, a cooperative relationship between a tension or exhaust detector and reel driving or reel stopping means, etc.), 615.11+, a residual locus for a material fluid suspension guide or guard.