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 1066536
Abstract of the Disclosure A power driven transmission assembly for an internal combustion engine, which assembly includes an endless V-belt that extends between a driving and a driven pulley. The driven pulley is subject to varying loads. The driving and driven pulleys each include first half portions which are transversely movable relative to the first half portions. By concurrently moving the second half portions relative to the first half portions, the ef- fective pitch diameters of the driving and driven pulleys relative to the belt is varied for the transmission assem- bly to automatically deliver rotational power that in mag- nitude is related to a desired degree to the torque curve or torque capability of the prime mover with which the in- vention is associated. The effective pitch diameter ratio of the pulley system is changed by varying the pitch dia- meter of the driving pulley by power means. The power means is energized and is responsive to an electro mechan- ical servomechanism that senses the rate of rotation of the driving pulley and the lateral position of the second portion thereof relative to the first portion. By com- paring the two signals, the second pulley portion of the driving pulley is moved laterally to a position where the driven pulley is delivering rotational power at a desired relationship to the torque curve of the engine. Radial balance is maintained throughout the shifting pattern as the effective pitch diameters of the driving and driven pulleys changes, for there is no radially moving parts in the present invention.
239932
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