Machine element or mechanism – Gearing – Toothed gear and recirculated unconnected elements
Patent
1977-08-08
1979-11-20
Scott, Samuel
Machine element or mechanism
Gearing
Toothed gear and recirculated unconnected elements
324175, F16H 5552, F16H 5556
Patent
active
041746414
ABSTRACT:
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 second half portions. By concurrently moving the second half portions relative to the first half portions, the effective pitch diameters of the driving and driven pulleys relative to the belt is varied for the transmission assembly to automatically deliver rotational power that in magnitude is related to a desired degree to the torque curve or torque capability of the prime mover with which the invention is associated. The effective pitch diameter ratio of the pulley system is changed by varying the pitch diameter of the driving pulley by power means. The power means is energized and is responsive to an electro mechanical 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 comparing 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 transmitted 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.
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patent: 4088036 (1978-05-01), Hillman
Electronic Engineering, Oct. 1974, "Optoelectronics Applied to Variable Speed Drives", pp. 18 and 19.
Electromatic Drive Corporation
Henderson William R.
Scott Samuel
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