Endless belt power transmission systems or components – Pulley with belt-receiving groove formed by drive faces on... – Load responsive
Patent
1981-04-27
1983-04-19
Herrmann, Allan D.
Endless belt power transmission systems or components
Pulley with belt-receiving groove formed by drive faces on...
Load responsive
474 30, F16H 5556
Patent
active
043804446
ABSTRACT:
A variable ratio belt drive in which a pair of pulleys each having axially movable flanges are driven by a belt and in which the ratio of the pulleys can be changed and for all ratio changes, the load between the pulley and the belt is proportional to the useful tangential force at the belt and its friction coefficient with the pulley to produce only the necessary pressure between the pulley flanges and the belt to transmit the power applied to one pulley to the other pulley. The force on the flanges of the pulleys results from control plates having opposed control surfaces of a particular configuration which are forced apart in response to the application of torque to move the pulley flanges axially toward each other with the required force. One embodiment uses a plurality of control surfaces to increase the movement of pulley flanges and thereby the maximum ratio that can be obtained. Still another embodiment of the invention uses one set of control surfaces acting during one direction of pulley rotation and another set of control surfaces acting during the opposite direction of pulley rotation to eliminate backlash problems.
REFERENCES:
patent: 815345 (1906-03-01), Gulowsen
patent: 2276186 (1942-03-01), Getchell
patent: 2336002 (1943-12-01), Everett
patent: 2577913 (1951-12-01), Peterson
patent: 2651208 (1953-09-01), Karig
patent: 2852953 (1958-09-01), Karig
patent: 3034367 (1962-05-01), Steuer
patent: 3043152 (1962-07-01), Karig et al.
patent: 3110189 (1963-11-01), Steuer
patent: 3590649 (1971-07-01), Fischer
patent: 3722308 (1973-03-01), Steuer
patent: 3786688 (1974-01-01), Svenson
patent: 3875814 (1975-04-01), Steuer
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