Variable speed drive

Details Variable speed drive Variable speed drive

1984-12-21

1987-03-10

Leppink, James A.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Pulley shifter

F16H 714

Patent

active

046488545

ABSTRACT:
A variable speed drive of the type having a fixed pulley, a variable pulley mounted on a motor shaft and a drive belt coupling the two pulleys. The motor is pivotally mounted on a frame. An actuator is provided for pivoting the motor and variable pulley through an arc to vary the distance between the pulleys which changes the pitch diameter of the variable pulley and the drive ratio of the system. The variable pulley has one fixed face and one movable face, and a cam system is provided and positioned for engagement upon arcuate movement of the motor to cause a predetermined amount of lateral movement of the motor and variable pulley to compensate for changes in the drive line of the variable pulley to movement of the movable face thereof. In this manner, the cam system maintains the variable pulley, fixed pulley and drive belt in accurate alignment throughout the entire range of movement of the motor and corresponding range of variation in the drive ratio of the system.

REFERENCES:
patent: 1528346 (1925-03-01), Stampen
patent: 2001111 (1935-05-01), Rhodes et al.
patent: 2796091 (1957-06-01), Odlum et al.
patent: 4378199 (1983-03-01), Hesler
patent: 4381174 (1983-04-01), Obler

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