Continuously variable transmission device

Planetary gear transmission systems or components – Planet pinion is friction gear – Variable speed ratio

Reexamination Certificate

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Details

C475S185000

Reexamination Certificate

active

07608006

ABSTRACT:
A continuously variable transmission device has planetary members (23) in rolling contact with radially inner and outer races (12, 14; 36, 37) each comprising axially spaced relatively axially movable parts, and control means (18) for determining the axial separation of the parts (12, 14) of one of the two races, in which the planetary members (23) are connected for drive transmission to an input or output member (30) of the transmission device by connection means which allows the radial position of the planets to vary in response to variation in the axial separation of the parts (12, 14) of the said one of the two races (37), and in which the generatrix of the curved surface (70, 71) of at least one of the races (37) and/or planetary members (23) is non-circular.

REFERENCES:
patent: 3452622 (1969-07-01), Kashihara
patent: 3504574 (1970-04-01), Okabe
patent: 3516305 (1970-06-01), Walter
patent: 3707888 (1973-01-01), Schottler
patent: 3793910 (1974-02-01), Nasvytis
patent: 4856374 (1989-08-01), Kreuzer
patent: 7086981 (2006-08-01), Ali et al.
patent: 2342130 (2000-04-01), None
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patent: 2381839 (2003-05-01), None
patent: 06137398 (1994-05-01), None
patent: WO 83/02986 (1983-09-01), None
patent: WO 99/35417 (1999-07-01), None
patent: WO 03/023256 (2003-03-01), None
UK Search Report dated Mar. 3, 2005. Application No. GB 0326596.4.

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