Planetary gear transmission systems or components – Planet pinion is friction gear – Variable speed ratio
Patent
1994-09-22
1996-08-13
Bonck, Rodney H.
Planetary gear transmission systems or components
Planet pinion is friction gear
Variable speed ratio
475193, 475197, F16H 1548
Patent
active
055451004
ABSTRACT:
A continuously variable transmission comprises a sun wheel (11, 66) and at least one planet wheel (3, 65) having a double, essentially conical surface (30, 31, 64, 71, 72), which planet wheel (3, 65) interacts on one side with the sun wheel (11, 66) and on the other side with an annulus wheel (2, 73), as well as adjusting structure (5, 6, 16) for changing the transmission ratio. Each planet wheel (3, 65) is provided with an intermediate wheel (9, 59) which interacts on one side with the sun wheel (11, 66) and on the other side with the planet wheel (3, 65). Each planet wheel (3, 65) and, where appropriate, intermediate wheel (9, 59) is also adjustable about an imaginary axis which runs transversely to the centre line of the sun wheel (11, 66), such that each planet wheel (3, 65) can be brought into positions with respect to the annulus wheel (2, 59) in which they can roll with respect to one another so as to describe a helical path. As a result, the planet wheel (3, 65) and the sun wheel are given a different position with respect to one another in the axial direction, which produces a different transmission ratio.
REFERENCES:
patent: 2973671 (1961-03-01), Elkins
patent: 2974547 (1961-03-01), Egan
patent: 4909101 (1990-03-01), Terry
d'Herripon Bastiaan A.
Roovers Gijsbertus C. F.
Bonck Rodney H.
Rodriguez Saul
VAN Doorne's Transmissie B.V.
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