Variable speed transmission for portable winch

Details Variable speed transmission for portable winch Variable speed transmission for portable winch

1984-06-08

1986-01-28

Leppink, James A.

Endless belt power transmission systems or components

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

474109, F16H 708

Patent

active

045668728

ABSTRACT:
The driving tension of a drive belt is maintained by axial force components applied to a pair of adjustable diameter pulleys about which the drive belt is entrained. A spring force is divided into such force components under control of relative torque loadings applied to the pulleys through drive shafts thereby also establishing a drive ratio that is automatically varied by relative adjustment of the pulley diameters.

REFERENCES:
patent: 2726364 (1955-12-01), Merritt
patent: 3538789 (1970-11-01), Quick et al.
patent: 3741026 (1973-06-01), Franzen

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