F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
74/224, 341/91
F16H 9/18 (2006.01)
Patent
CA 1076843
ABSTRACT OF THE DISCLOSURE This invention relates to a novel power drive assembly for use with a prime mover. The assembly comprises a rotatably supported first shaft and a rotatably supported second shaft spaced from the first shaft and parallel thereto. A pair of pulleys are provided and the position of the second half portion of the driving pulley relative to the first half portion is fixed by a feedback loop. The driving pulley is utilized as the driven pulley and the driven pulley is utilized as the driving pulley. The prime mover is of the type where rotational speed varies over wave ranges. The feedback loop comprises a sensor which senses the rotational speed of the driven pulley and supplies an output to a comparator means which compares the output of the speed sensor with some reference signal which is related to the desired rotational speed of the driven pulley. The comparator circuit generates a signal to vary the effective pitch diameter ratio between the driving and the driven pulley which is applied to the power means on the driven pulley so that the output signal from the speed sensor is equal to the reference signal. This produces much more efficient assembly in view of the prior art.
328149
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