| 摘要 |
PCT No. PCT/EP94/03905 Sec. 371 Date Dec. 16, 1995 Sec. 102(e) Date Dec. 16, 1995 PCT Filed Nov. 25, 1994 PCT Pub. No. WO95/16867 PCT Pub. Date Jun. 22, 1995The invention concerns a tension roller made of a plastic material for adjusting a tension in a belt drive, comprising a wheel (7) having an inner ring (9) and an outer ring (10) connected to each other by axially oriented, circumferentially spaced ribs (12) and by a central web (8), the wheel (7) being rotatably mounted on a support element (2) which bears by a running face against the belt (3). According to the invention, successive ribs (12) enclose different angles with reference to a central point of the wheel.
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