Continuously variable transmission

Details Continuously variable transmission Continuously variable transmission

1996-11-15

1998-08-18

Herrmann, Allan D.

Friction gear transmission systems or components

Plural gearing in series

Friction gearing is ratio change gearing

476 50, 476 54, 476 57, F16H 1512

Patent

active

057952590

ABSTRACT:
A continuously variable transmission in which a ratio transfer bearing whose axis is at right angles to a friction disc against which it interacts by friction is moved across the face of the friction disc to continuously vary the transfer ratio between the two. The ratio transfer bearing is varied by means of a jackscrew operated by a train of bevel gears.
One friction disc and ratio transfer bearing on the input side and a second friction disc and ratio bearing on the output side are connected through an idler bearing against which the two ratio transfer bearings operate. The jackscrews which move the two ratio transfer bearings are operated through the bevel gear linkages in an inverse fashion so that a higher ratio on one friction disc results in a lower ratio on the other friction disc and inversely. By varying the two transfer ratios inversely, a wider range of output ratios is obtainable.

REFERENCES:
patent: 833177 (1906-10-01), Reimers
patent: 1092076 (1914-03-01), Morris
patent: 1168057 (1916-01-01), Buck
patent: 1410747 (1922-03-01), Gill
patent: 1738965 (1929-12-01), Reina
patent: 2858705 (1958-11-01), Eldridge, Jr.
patent: 3323384 (1967-06-01), Wodarka
patent: 4137785 (1979-02-01), Virlon
patent: 4819494 (1989-04-01), Giuliani et al.

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