US PATENT SUBCLASS 242 / 611.2
.~.~.~ Noncircular bore (e.g., spline)

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}
611.2.~.~.~ Noncircular bore (e.g., spline)

DEFINITION

Classification: 242/611.2

Noncircular bore (e.g., spline):

(under subclass 611) Subject matter wherein the particular spool formation includes an irregularly shaped aperture or notch for receiving a drive key, dog, or other projection to cause the spool to rotate with another member usually a rotatably powered spindle.

SEE OR SEARCH CLASS

464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, for a particular drive connection of general use.