Clutchable pulley system sans idler-pulley

Details Clutchable pulley system sans idler-pulley Clutchable pulley system sans idler-pulley

1989-09-27

1990-07-17

Bui, Thuy M.

Endless belt power transmission systems or components

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

Guide roll mounted for movement of its axis along arcuate...

474 84, 474113, F16H 708

Patent

active

049418645

ABSTRACT:
Disclosed is a clutchable pulley system conventionally having an annular first-belt and an annular second-belt, both belts enveloping a plurally-grooved transfer pulley. Also in conventional fashion; the first-belt is constantly tightly trained with a power-source pulley and at least one primary-load pulley; and the second-belt is normally loosely enveloping the plurally-grooved transfer pulley and at lest one secondary-load pulley whereby the secondary-load pulley(s) will not rotate until the second-belt is made to tightly train with the transfer pulley. Departing from the prior art utilization of the idler-pulley principle for controllably tightly entraining the second-belt with the plurally-grooved and secondary-load pulleys, the herein disclosed clutchable pulley system supplants the second-belt idler-pulley by controllably moving the plurally-grooved transfer pulley along an arcuate path.

REFERENCES:
patent: 3216266 (1965-11-01), Sunnen
patent: 3362243 (1968-01-01), Ferguson
patent: 3741499 (1973-06-01), Osborn
patent: 4036029 (1977-07-01), Francis
patent: 4223757 (1980-09-01), Olander

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