Variable speed, belt driven transmission system, speed sensing d

Details Variable speed, belt driven transmission system, speed sensing d Variable speed, belt driven transmission system, speed sensing d

1983-01-12

1985-01-15

Bonck, Rodney H.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Speed responsive

474 11, 474 46, 74856, F16M 5552, B60K 4104

Patent

active

044932219

ABSTRACT:
A method for shifting a transmission with a predominantly mechanical speed sensing actuator to within a 10 percent shifting zone around a chosen operating line on an engine rpm/torque map by matching the force balance of the driver pulley to a force balance on the driven pulley.
A variable speed belt drive transmission system with a predominantly mechanical speed sensing driver pulley and a torque sensing driven pulley that responds to an operating line, monotonic in torque having a slope from about 0.004 lb-ft/rpm to about 0.060 lb-ft/rpm where the driver pulley has an actuator that controls speed for a chosen torque value. The actuator has at least one centrifugal weight connected to an end of a torque producing spring to wind the spring. A second end of the spring is operatively connected through an articulated linkage to a movable half of the pulley such that the generated axial force is not directly proportional to square of the speed.

REFERENCES:
patent: 2117485 (1938-05-01), Lewellen et al.
patent: 2795962 (1957-06-01), Uher
patent: 3534622 (1970-10-01), Johnson
patent: 3600960 (1971-08-01), Karig et al.
patent: 3850050 (1974-11-01), Lemmens
patent: 4284408 (1981-08-01), Boer et al.

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