Variable speed power transmission including means for minimizing

Details Variable speed power transmission including means for minimizing Variable speed power transmission including means for minimizing

1976-05-05

1977-07-19

Geoghegan, Edgar W.

Machine element or mechanism

Gearing

Backlash take-up

74440, F16H 5518

Patent

active

040360750

ABSTRACT:
Disclosed herein is a V-belt power transmission including a movable sheave member which has a hub and is mounted on the driving portion of an input shaft for common rotary movement and for relative axial movement via first and second axially spaced drive bushings, each having a central aperture which receives the shaft driving portion and having driven surfaces which are drivingly engaged by driving surfaces on the shaft driving portion during rotation of the shaft by a power source. The first drive bushing is affixed to the hub of the movable sheave member and the second drive bushing is connected, either to the hub of the movable sheave member or to the first drive bushing, by means arranged to resiliently urge the second bushing rotationally relative to the first drive bushing so that the driven surfaces of the drive bushings apply a predetermined "locked-up" torque on the shaft driving portion, thereby minimizing backlash between the movable sheave member and the shaft driving portion.

REFERENCES:
patent: 2192188 (1940-03-01), Green
patent: 2273784 (1942-02-01), Kahl

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