US PATENT SUBCLASS 242 / FOR 172
.~.~ Interdigitated composite rotating surface (242/47.04)

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

FOR 168  DF  CORDAGE (242/47) {8}
FOR 169  DF  .~ Unidirectionally moving coils (242/47.01) {5}
FOR 172.~.~ Interdigitated composite rotating surface (242/47.04) {3}
FOR 173  DF  .~.~.~> Rigid cages (242/47.05)
FOR 174  DF  .~.~.~> Elements pivot on axis parallel to rotating axis (242/47.06)
FOR 175  DF  .~.~.~> Independent radially moving elements (242/47.07)

DEFINITION

Classification: 242/FOR.172

Foreign Art Collections for device including a first rotatable set of substantially rigid elongated elements wherein each element has a material contacting face; said first set cooperating with a second rotatable set of substantially rigid elongated elements, also having material contacting faces and being substantially coaxial with the first set in such a way that the elongated elements of the first set pass between the elongated elements of the second set as each set rotates about its own axis, in which device the relative movement of the material contacting faces of the first set with respect to the material contacting faces of the second set serves to advance material axially therealong.