Device for releasing the tension in a mechanical tensioner for a

Details Device for releasing the tension in a mechanical tensioner for a Device for releasing the tension in a mechanical tensioner for a

1998-02-18

2000-04-18

Battista, Mary Ann

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Load responsive tension adjuster or shifter

474111, 474138, F16H 708, F16H 722, F16H 712

Patent

active

060509147

ABSTRACT:
A chain tension relieving device which prevents excessive tension being applied to a tension run of a chain. A shoe (5C) engages a tension run (3B) of a chain (3) stretched between a driving sprocket (1) and a driven sprocket (2) from another side of the chain in a bowed portion of the chain (3). When the tension acting on the tension run (3B) is of a prescribed value or less, the shoe surface of the shoe (5C) is held to a given advanced position so as to bow the tension run of the chain (3) by a biasing force of mechanical tensioner (15D). When the tension exceeds the prescribed value, the tension side (3B) of the chain (3) is straightened against the biasing force of the mechanical tensioner and the shoe surface of the shoe (5C) retreats from the given advanced position.

REFERENCES:
patent: 4963121 (1990-10-01), Himura et al.
patent: 5000724 (1991-03-01), Reid
patent: 5088966 (1992-02-01), Suzuki et al.
patent: 5248282 (1993-09-01), Suzuki

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