Temperature compensated self-tensioning idler pulley

Details Temperature compensated self-tensioning idler pulley Temperature compensated self-tensioning idler pulley

1988-04-04

1989-02-28

Bui, Thuy M.

Endless belt power transmission systems or components

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

Pulley or guide roll has eccentric mount for shifting or...

474135, F16H 710

Patent

active

048081485

ABSTRACT:
A belt tensioning device includes a resilient coupling which interconnects an idler pulley hub and a stationary mounting member. A ratchet and pawl mechanism interconnects the hub and the stationary mounting member to prevent the belt from overcoming the biasing force of the tensioning device during high belt loads. A resilient biasing element such as an elastomeric element is located between the ratchet and pawl mechanism and the stationary mounting member to allow limited movement of the idler pulley hub away from a belt in order to relieve belt tension such as caused during thermal expansion of an engine block.

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patent: 4610645 (1986-09-01), Donn et al.
patent: 4618335 (1986-10-01), Brandenstein et al.
patent: 4634407 (1987-01-01), Holtz

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