Toothed belt wheel with a collar

Abstract

A cog belt pulley system includes cog belt pulleys (10a to 10c) each with at least one flange (15 to 17) protruding in the radial direction beyond the toothed circumferential surface (11) and extending in the circumferential direction to limit slipping of the belt (20, 30, 40) at right angles to the circumferential direction of the pulleys (10a to 10c). Said flange is provided only as a segment over a limited part of the circumferential surface in the circumferential direction of the pulleys. A belt is mounted on two pulleys by the pulleys being rotated into a position in which the particular flange segments face each other. In this position the belt can be pushed onto the pulleys without colliding with the flange segments. This substantially facilitates mounting and replacement of the belts. No separate measures are required, such as removing the flange before pushing on the belt or separately pretensioning an overly long belt after its mounting. Thus, constructional and maintenance effort are reduced.

Dependencies are inferred from the claim text.