Treadmill speed reset system

Details Treadmill speed reset system Treadmill speed reset system

1989-10-30

1990-07-31

Bui, Thuy M.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Speed responsive

474 8, 474 70, 198330, 272 69, F16H 5552, A63B 2306

Patent

active

049447130

ABSTRACT:
A treadmill having a walking belt with a constant speed drive motor and a transmission for adjusting the speed of the walking belt. The transmission employs input and output variable pitch pulleys to effect the belt speed change. The pulleys employ adjustably spaced sheaves to accomplish the change in speed ratio. The input pulley sheaves are adjusted by a speed change motor while the output pulley sheaves employ internal springs to adjust the sheave separation to the main drive belt joining the two pulleys. A speed reset motor is employed to keep the output pulley rotating while the sheave separation in the input pulley is adjusted for minimum walking belt speed after the main drive motor is shut down to insure that the main drive belt adjusts properly on the output pulley.

REFERENCES:
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patent: 3737163 (1973-06-01), Sumrall
patent: 3811331 (1974-05-01), Moogk
patent: 4088036 (1978-05-01), Hillman
patent: 4174641 (1979-11-01), Hillman
patent: 4541821 (1985-09-01), Sakakibara
patent: 4635928 (1987-01-01), Ogden et al.
patent: 4748394 (1988-05-01), Watanabe
patent: 4749181 (1988-06-01), Pittaway et al.
patent: 4792134 (1988-12-01), Chen

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