US PATENT SUBCLASS 474 / 202
POSITIVE DRIVE BELT

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

202POSITIVE DRIVE BELT {3}
203  DF  .~> Drive surfaces on belt formed by spherical or hemispherical elements
204  DF  .~> Drive surfaces on belt formed in or interconnected by continuous flexible member {1}
206  DF  .~> Belt formed of rigid links {9}

DEFINITION

Classification: 474/202

POSITIVE DRIVE BELT:

(under the class definition) Subject matter wherein belt* structure includes means defining distinct pulley*-engaging surfaces spaced along the length of the belt for intended driving engagement of such surfaces sequentially with radially extending teeth or ridges of the pulley correspondingly spaced about the circumference of the pulley.

SEE OR SEARCH THIS CLASS, SUBCLASS:

153, for a positive drive belt combined with a pulley.

SEE OR SEARCH CLASS

30, Cutlery,

380, and 381+ for a band or chain saw.

83, Cutting,

788+, for an endless band or chain cutting device. 185, Motors: Spring, Weight, and Animal Powered,

16, for a belt intended to be driven by an animal treading on the belt.

198, Conveyors: Power-Driven,

844.1+, for conveyor belt structure.

305, Wheel Substitutes for Land Vehicles,

157+, and 185+ for a track or tread.

451, Abrading,

296+, for an abrading tool comprising an endless band. [figure]