Speed-adjusting mechanism of a tread mill

Details Speed-adjusting mechanism of a tread mill Speed-adjusting mechanism of a tread mill

1988-09-13

1990-05-29

Crow, Stephen R.

Undertaking

474 27, A63B 2306, F16H 912

Patent

active

049289560

ABSTRACT:
The present invention provides a speed adjusting transmission mechanism for adjusting the speed of a rotative belt of a tread mill which comprises an adjustment transmission shaft provided movably between an output shaft of a motor and a driven shaft associated with the rotative belt. The movable transmission shaft is held by a vertical plate which is mounted on a pair of vertical guide supports and which is slideable along vertical rail grooves of the guide supports. This support means is simple and durable. The mechanism further includes V-belt carrying pulleys respectively mounted on the output shaft, two opposite ends of the transmission shaft and one end of the driven shaft. The pulleys mounted on the output shaft and on one end of the transmission shaft each comprise two cone-shaped discs one of which is slideable. A reversible motor in combination with a screw drive means is also provided for moving the holder plate of the transmission shaft so that the speed of the motion transmitted by the V-belts can be adjusted.

REFERENCES:
patent: 4502679 (1985-03-01), DeLorenzo
patent: 4729558 (1988-03-01), Kuo
patent: 4792134 (1988-12-01), Chen

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