Chain tensioner

Details Chain tensioner Chain tensioner

1995-12-28

1997-07-22

Schoeppel, Roger J.

Endless belt power transmission systems or components

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

Tension adjuster or shifter driven by electrical or fluid motor

474135, F16H 708

Patent

active

056498780

ABSTRACT:
A chain tensioner free from excess tension caused by push-back of chain upon mounting. The chain tensioner has a support for mounting a casing at a pre-set position, a thrusting member slidably arranged within the casing for applying tension to a chain, a biasing unit for supplying a thrusting force to the thrusting member for supplying a pre-set tension to the chain when commanded, a retention unit for retaining the biasing force of the thrusting member, a retention canceling unit for canceling the state of retention by the thrusting member and a maintenance unit for maintaining a pre-set position of the thrusting member as set by the biasing unit. The retention canceling mechanism has a spring plate arranged within the casing slidably along with the support. The spring plate is moved for canceling the retention by the retention unit upon mounting.

REFERENCES:
patent: 4355991 (1982-10-01), Kraft
patent: 4371360 (1983-02-01), Ojima et al.
patent: 5116284 (1992-05-01), Cho
patent: 5277664 (1994-01-01), Mott
patent: 5558587 (1996-09-01), Church

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