Floating cone continuously variable transmission

Details Floating cone continuously variable transmission Floating cone continuously variable transmission

2006-07-18

2006-07-18

Joyce, William C (Department: 3682)

Friction gear transmission systems or components

Stepless ratio change

Intermediate idler between driving and driven gears

C476S050000

Reexamination Certificate

active

07077782

ABSTRACT:
A continuously variable transmission (CVT) is suitable for replacement of a main transmission box of a compound transmission in a light to medium duty electromechanically actuated truck transmission system. For example, one line-haul truck transmission consists of a five-speed main section and an auxiliary deep reduction box to provide 15 forward speed ratios. The replacement of the five-speed main section with a CVT unit enhances the overall operating efficiency of the system. In one form, the CVT includes a pair of rotatable countershafts mounted to pivot relative to one another. Each of countershafts has a greater diameter disk at one end than the other. Positioned between countershafts are a pair of laterally spaced cones that share a common axis; the greater diameter disk ends of the two countershafts bear against one of the intermediately positioned cones, while smaller diameter disk ends of the countershafts bear against the second cone.

REFERENCES:
patent: 875962 (1908-01-01), Stanley
patent: 1050351 (1913-01-01), Dean
patent: 1459979 (1923-06-01), Kohn
patent: 3302474 (1967-02-01), Edlich
patent: 5601509 (1997-02-01), Munoz
patent: 6092432 (2000-07-01), Klaricic
patent: 6174260 (2001-01-01), Tsukada et al.
Article entitled “Nissan's Extroid CVT”, by Jack Yamaguchi, Automotive Engineering International/Feb. 2000.

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