US PATENT SUBCLASS 474 / 189
.~.~ Circumferentially extending grooves

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


474 /   HD   ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS

166  DF  FRICTION DRIVE PULLEY OR GUIDE ROLL {11}
188  DF  .~ Including grooves or openings in cylindrical belt-engaging surface (e.g., for escape of air, etc.) {1}
189.~.~ Circumferentially extending grooves

DEFINITION

Classification: 474/189

Circumferentially extending grooves:

(under subclass 188) Subject matter wherein grooves in said drive surface extend for at least 360 degrees circumferentially about the axis of rotation of the pulley* or guide roll*. [figure]