Draw transmission

Details Draw transmission Draw transmission

1979-05-07

1981-05-26

Staab, Lawrence J.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

74190, F16H 900, F16H 1100

Patent

active

042696003

ABSTRACT:
A transmission system is provided for differential speed control. An endless, resilient member in the form of an endless belt is driven by an input pulley. The speed differential is derived by using the input speed taken from one effective radius of the resilient element and picking the output speed from a different effective radius of the resilient element, with the different effective radii being variably selectable. Thus an output pulley has its periphery in contact with the resilient member and a control carriage coupled to the resilient member is operative to vary the curvature of the resilient member with respect to the periphery of the output pulley. In this manner, the neutral axis of the resilient member is varied to control the speed of the surface of the resilient member that is contacting the periphery of the output pulley.

REFERENCES:
patent: 1292995 (1919-02-01), Beach
patent: 1803186 (1931-04-01), Hendrickson
patent: 2270485 (1942-01-01), Waters
patent: 3316415 (1967-04-01), Taylor
patent: 3413866 (1968-12-01), Ford
patent: 3888217 (1975-06-01), Hisserich
patent: 4075901 (1978-02-01), Freyermuth

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