Mechanical chain tensioner with belleville springs

Details Mechanical chain tensioner with belleville springs Mechanical chain tensioner with belleville springs

1996-10-21

1998-02-24

Schoeppel, Roger J.

Endless belt power transmission systems or components

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

Load responsive tension adjuster or shifter

474137, 474138, F16H 708

Patent

active

057206830

ABSTRACT:
A mechanical tensioner having a piston biased by a spring in a protruding direction. A ratchet assembly includes a spring, a ratchet piston, and a pair of ratchets may also provide a no-return function. A plurality of belleville disc springs provides the force on the tensioner piston, the ratchet piston, or both.

REFERENCES:
patent: 4411638 (1983-10-01), Wilson
patent: 4416648 (1983-11-01), Radocaj
patent: 4457741 (1984-07-01), Hoeptner
patent: 4466803 (1984-08-01), Wilson
patent: 4472161 (1984-09-01), Ojima
patent: 4509935 (1985-04-01), Foster et al.
patent: 4525153 (1985-06-01), Wilson
patent: 4696664 (1987-09-01), Wilson
patent: 4767385 (1988-08-01), Wilson
patent: 5277666 (1994-01-01), Kumm
Rolex Company/National Disc Spring Division catalog (undated), p. 5.

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