US PATENT SUBCLASS 242 / 580.1
.~.~.~ Edge grip or barrier pair for strip material

Current as of: June, 1999
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242 /   HD   WINDING, TENSIONING, OR GUIDING

570  DF  COIL HOLDER OR SUPPORT (E.G., SPINDLE, DISPENSER, OR SPOOL) {6}
579  DF  .~ With material end retainer {8}
580  DF  .~.~ Outer end {1}
580.1.~.~.~ Edge grip or barrier pair for strip material

DEFINITION

Classification: 242/580.1

Edge grip or barrier pair for strip material:

(under subclass 580) Subject matter wherein the coil holder is adapted to support web material having a width greater than its thickness, and the means to grip acts on the web material to either: (a) engage and apply a pinching force to the width of the elongated material, or (b) overlie an edge of the material to block free unwinding.

SEE OR SEARCH THIS CLASS, SUBCLASS:

602.3, for a spool with spiral grooves to separate coil convolutions, which grooves have walls that incidentally retain the outer coil convolution.