US PATENT SUBCLASS 19 / 241
.~.~.~.~ By belt shifting

Current as of: June, 1999
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19 /   HD   TEXTILES: FIBER PREPARATION

65 R  DF  WORKING {8}
236  DF  .~ Drafting {7}
239  DF  .~.~ With material sensing {1}
240  DF  .~.~.~ And speed changing {1}
241.~.~.~.~ By belt shifting

DEFINITION

Classification: 19/241

(under subclass 240) Apparatus in whose accomplishment or operation the rotary speed change is brought about by moving a web (or chain) like power transmitting element with respect to its mating power transmitting element.

(1) Note. Typically, a roll-shaft-driving belt is moved axially along a truncated cone cylinder, whereby the change in the diameter of the cylinder causes the speed variation.

SEE OR SEARCH CLASS

474, Endless Belt Power Transmission Systems or Components, various subclasses for control of speed change, including belt shifting mechanism, for endless belt power transmission.