US PATENT SUBCLASS 242 / 611.1
.~.~.~ Circular rim (e.g., drum, sprocket, or ratchet)

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}
611  DF  .~.~ With brake or drive formation {2}
611.1.~.~.~ Circular rim (e.g., drum, sprocket, or ratchet)

DEFINITION

Classification: 242/611.1

Circular rim (e.g., drum, sprocket, or ratchet):

(under subclass 611) Subject matter wherein the brake or drive formation includes a toroidal projection on an end face of the spool.