Endless belt power transmission systems or components – Pulley with belt-receiving groove formed by drive faces on... – Load responsive
Patent
1985-05-08
1986-03-25
Leppink, James A.
Endless belt power transmission systems or components
Pulley with belt-receiving groove formed by drive faces on...
Load responsive
474 46, F16H 1106
Patent
active
045780501
ABSTRACT:
A belt-type torque control system wherein a power transmission belt is entrained about a pair of variable speed pulleys. One of the pulleys includes coaxially mounted pulley halves, one of which is fixed to a drive shaft and the other of which is axially and rotatively movably mounted thereto. A coil spring extends between the movably mounted coil half and a spring retainer fixed to the shaft urging the movable pulley half toward the fixed pulley half. The coil spring causes a variation in the spacing between the pulley halves as a function of the belt force applied thereto in operation of the drive. The angular displacement of the movable pulley half is sensed by a control including sensing elements associated with the movable pulley half and sensing elements associated with the fixed pulley half so as to provide a differential angle, or phase, difference signal which is used by the control for adjusting the other adjustable pulley, thereby to maintain the adjustable pulley with which the sensing means is associated within a preselected range of angular displacement between the fixed and movable pulley halves thereof.
REFERENCES:
patent: 3393572 (1968-07-01), Larsson
patent: 3908475 (1975-09-01), Takagi et al.
patent: 3954018 (1976-05-01), O'Berto
patent: 4088036 (1978-05-01), Hillman
patent: 4095479 (1978-06-01), Lundberg
patent: 4229989 (1980-10-01), Tamura
patent: 4541821 (1985-09-01), Sakakibara
Leppink James A.
McKenzie Frank
Mitsuboshi Belting Ltd.
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