US PATENT SUBCLASS 474 / 121
.~.~ For shifting exterior surface of belt into engagement with pulley

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

101  DF  MEANS FOR ADJUSTING BELT TENSION OR FOR SHIFTING BELT, PULLEY OR GUIDE ROLL {11}
119  DF  .~ Belt shifter for shifting belt laterally or for selective engagement and supported disengagement of belt with pulley {4}
121.~.~ For shifting exterior surface of belt into engagement with pulley

DEFINITION

Classification: 474/121

For shifting exterior surface of belt into engagement with pulley:

(under subclass 119) Subject matter wherein an inner surface of the belt* defines an area within a closed loop, and wherein said device is operatively associated with the belt to move the belt in a manner to engage or disengage a surface of the belt opposite the inner surface with the drive face of a pulley* located outside of the enclosed area.

SEE OR SEARCH THIS CLASS, SUBCLASS:

118, for a device for selectively shifting a pulley into and out of engagement with the exterior surface of a belt.

139, for structure wherein a pulley is engaged with the exterior surface of a belt. [figure]