Variable speed friction transmission

Details Variable speed friction transmission Variable speed friction transmission

1994-02-25

1995-04-18

Herrmann, Allan D.

Friction gear transmission systems or components

Stepless ratio change

Driving and driven gears on nonlinear angularly related axes

476 26, 476 59, F16H 1524, F16H 1546

Patent

active

054073995

ABSTRACT:
A variable ratio friction transmission is described in which one element is a straight sided cone and the other a roller or wheel. The two are in frictional engagement. The roller or wheel moves over an element of the cone to change the speed ratio, and at all times stays parallel to itself and moves along a straight line axis. This axis passes through the apex of the cone at all times, but the cone is tilted about its apex to contact the roller or wheel as the ratio is changed.

REFERENCES:
patent: 1247732 (1917-11-01), Shelton
patent: 3158041 (1964-11-01), Rae
patent: 5014565 (1991-05-01), Stephenson
Loewenthal, S. H. "Advances in Traction Drive Technology" NASA Technical Prior Sep. 2, 1983.
Memorandum No. 83397, Sep. 1983.
Lubomyr O. Hewko "Automotive Traction Drive CVTs-An Overview" Sep. 1986.

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