Friction type continuously variable transmission

Details Friction type continuously variable transmission Friction type continuously variable transmission

1994-07-19

1996-08-13

Ta, Khoi Q.

Planetary gear transmission systems or components

Planet pinion is friction gear

Variable speed ratio

475207, 475215, F16H 1516

Patent

active

055451012

ABSTRACT:
A frictional type continuously variable transmission having a continuously variable transmission unit with a planetary gear unit attached thereto to increase the speed ratio as a whole while not increasing the size of the entire device. This transmission is composed of the continuously variable transmission, a planetary gear unit and an impeller unit. The planetary gear unit has a drive shaft, a carrier fixed to the drive shaft, a plurality of planetary gears supported on the carrier, and an internal gear meshing with the planetary gears. The continuously variable transmission unit has an input shaft to which is fixed a sun gear meshing with the planetary gear. With this arrangement, the impeller can be rotated at a high speed even if the speed ratio of the continuously variable transmission unit is low. The transmission unit also has a pressing mechanism at the input shaft end. Thus, it is possible to manufacture the three units separately and assemble them together.

REFERENCES:
patent: 2216190 (1940-10-01), Erban
patent: 2580392 (1952-01-01), Bade
patent: 5318486 (1994-06-01), Lutz
International Publication No. WO 88/07149; International Application No. PCT/US88/00675; Date: Sep. 22, 1988.

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