Continuously variable transmission device

Details Continuously variable transmission device Continuously variable transmission device

2004-11-11

2009-10-27

Pang, Roger (Department: 3655)

Planetary gear transmission systems or components

Planet pinion is friction gear

Variable speed ratio

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.

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UK Search Report dated Mar. 3, 2005. Application No. GB 0326596.4.

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