Patent ID: 8348794

Claim:
A device for activating a cogged flexible transmission organ, wherein cogs thereof have a narrower breadth than a total breadth of the flexible transmission organ, which comprises: at least one support pulley borne idle on a drive shaft for abutting, at a calibrated circumference thereof, a smooth portion of a base belt of the flexible transmission organ, for defining a predetermined winding radius of the flexible transmission organ; at least one cogged drawing pulley, flanked to the at least one support pulley, keyed on the drive shaft for rotation therewith, the at least one cogged drawing pulley having cogs for enmeshing with recesses of the cogged flexible transmission organ for advancing the cogged flexible transmission organ, the drawing pulley having cogs sized such that during enmeshing with and advancing the cogged flexible transmission organ, tops of the cogs of the cogged drawing pulley are displaced from bottoms of the recesses of the cogged flexible transmission organ and tops of the cogs of the flexible transmission organ are displaced from bottoms of recesses of the at least one drawing pulley.