| 摘要 |
A tensioner with a base, a pivot-arm (32) that oscillates about a pivot (34) secured to the base (30), a pulley (22) attached to the pivot-arm (32), a compression spring (36) with a first end (38) operatively connected to the pivot-arm (32) and a second end (50) operatively connected to a shoe (52) that presses a convex surface (54) of the shoe (52) against a concave arcuate surface (47) of the pivot-arm (32), to the shoe (32) held in place against a protuberance (60) secured to the base (30) by a balance of forces.
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