US PATENT SUBCLASS 160 / 318
.~.~.~ With spring anchor

Current as of: June, 1999
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160 /   HD   FLEXIBLE OR PORTABLE CLOSURE, PARTITION, OR PANEL

238  DF  ROLL TYPE {12}
309  DF  .~ With rotating means {5}
313  DF  .~.~ Spring {5}
318.~.~.~ With spring anchor

DEFINITION

Classification: 160/318

(under subclass 313) Roll type devices in which the means for connecting an end of the roll actuating spring to its associated element is claimed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

315, for this feature in spring winding or tensioning means.