US PATENT SUBCLASS 474 / 174
.~ Pulley or guide roll including circumferential belt-receiving groove

Current as of: June, 1999
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474 /   HD   ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS

166  DF  FRICTION DRIVE PULLEY OR GUIDE ROLL {11}
174.~ Pulley or guide roll including circumferential belt-receiving groove {4}
175  DF  .~.~> Groove formed by rugate or circumferentially spaced drive surfaces
176  DF  .~.~> Groove formed by multiple, abutting, circumferentially connected members
177  DF  .~.~> And circumferentially continuous belt-engaging layer or insert of diverse material added on or between groove-forming flanges {1}
179  DF  .~.~> Including connected discrete axially spaced groove-forming flanges {2}

DEFINITION

Classification: 474/174

Pulley or guide roll including circumferential belt-receiving groove:

(under subclass 166) Subject matter wherein a pair of belt*-engaging surfaces are provided for rotation about a common axis, said pair including circumferentially extending surfaces facing each other in an axial direction to drivingly engage a belt received in the space defined by such surfaces.

(1) Note. A pair of belt-engaging surfaces, as defined above, may be separate surfaces on distinct members or may be radially extending surface portions of a common surface. [figure]