Three mode stepless speed changing device

Details Three mode stepless speed changing device Three mode stepless speed changing device

1996-10-21

1998-09-08

Marmor, Charles A.

Planetary gear transmission systems or components

Nonplanetary variable speed or direction transmission...

Nonplanetary transmission is friction gearing

475216, F16H 3702

Patent

active

058038604

ABSTRACT:
A three mode stepless speed changing device is disclosed. The speed changing device of this invention maintains the operational performance expected by a four mode stepless speed changing device. Because one clutch, two gears and their associated elements, which are necessarily provided in the four mode device for performing the third mode of the four modes, are removed from the three mode device of this invention, the device of this invention has a simple construction. The device of this invention is also free from pressurized oil passages, which are necessary for performing the third mode of the four mode device. In this regard, the speed changing device of this invention is easily produced and assembled at low cost.

REFERENCES:
patent: 4990127 (1991-02-01), Roberts et al.
patent: 5020384 (1991-06-01), Kraus
patent: 5288281 (1994-02-01), Perry
patent: 5643121 (1997-07-01), Greenwood et al.

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