Abstract: The invention relates to a drive belt (1), particularly a toothed belt, having an elastic base body, comprising a cover layer (2) as the belt back, and a subframe (4) having a power transmission zone (7), wherein the base body is made from oil-resistant vulcanized rubber on the basis of a copolymer comprising butadiene and acrylonitrile, particularly HNBR, wherein according to the invention the proportion of acrylonitrile (CAN proportion) is <33% by weight with regard to the total weight of the copolymer. The particularly advantageous CAN proportion is 20 to 35% by weight. The power transmission zone (7) is typically also equipped with a textile cover (8), which is further provided with an oil-resistant protective layer (9), which is preferably made from PTFE.

Abstract: An HNBR-based toothed rubber belt (10) with a glass, carbon and/or aramid cord reinforcement (5) has a modified tooth covering (6) made of polyamide 6.6 fabric having weft threads (64) entirely or partly replaced in the peripheral/longitudinal direction of the belt by yarns made of polyether ether ketone (PEEK), polyimide (PI) and/or meta-aramid (M-A) or modified with PEEK, PI and/or M-A.

Abstract: A sweeping machine includes a housing and a rotary broom rotatably supported in the housing, the rotary broom being rotatable about an axis perpendicular to the direction of movement of the sweeping machine. A collection container is provided having an opening for receiving the sweeping swept by the rotary broom, pivot support means being mounted on the housing for pivoting the container between an operable position to receive sweepings and an emptying position for emptying collected sweepings from the container. A pivotal flap is pivotably mounted on the container adjacent the container opening and pivotal between a retention position in which the pivot flap retains the collected sweepings in the container when the latter is in its operable position and a discharge position which allows the collected sweepings to be emptied from the container when the latter is in its emptying position.