US PATENT SUBCLASS 242 / 602.1
.~.~.~ Helical pattern

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}
600  DF  .~ Spool or core {12}
602  DF  .~.~ With convolution or layer separator {2}
602.1.~.~.~ Helical pattern {1}
602.2  DF  .~.~.~.~> With particular lead-in or crossover structure

DEFINITION

Classification: 242/602.1

Helical pattern:

(under subclass 602) Subject matter wherein the means to maintain spacing includes a generally continuous ridge disposed about a winding axis of the spool with an axial offset or pitch for axially separating adjacent, congruent convolutions (e.g., by defining a helical groove for progressively storing elongated strand).

SEE OR SEARCH CLASS

187, Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle,

254+, for a winding or traction drum in combination with elevator structure.