Transmission system

Details Transmission system Transmission system

2007-05-29

2007-05-29

Pang, Roger (Department: 3681)

Planetary gear transmission systems or components

Planetary gearing or element

Coaxial teeth around planet pinion engage axially spaced...

C475S005000, C475S269000

Reexamination Certificate

active

10498303

ABSTRACT:
Transmission systems are disclosed which include a dual sunwheel system having an output sunwheel (70) and a control sunwheel (80). A planet cage (18) is arranged around the dual sunwheel system and includes a planet gear (62) in mesh with the sunwheel (70) and a planet gear (64) in mesh with the sunwheel (80). The planet gears (62, 64) are coupled to one another. The drive ratio of the transmission is controlled by controlling the cage (18) or the control sunwheel (70). The speed of rotation of the input (22), output (20) and control sunwheel (70) are sensed by sensors (90) and control signals are generated to control a control device to thereby control the rotation of planet cage (18) or the control sunwheel (80) to thereby set the drive ratio of the transmission. The control devices can include a motor, one or more magnetic powder clutches, a variable centroid system and a mechanical pitch transfer gear system.

REFERENCES:
patent: 4279177 (1981-07-01), Yamashita
patent: 5425682 (1995-06-01), Hayashi
patent: 5454765 (1995-10-01), Sommer
patent: 5624339 (1997-04-01), Coutant et al.
patent: 6080077 (2000-06-01), Kamlukin
patent: 6641499 (2003-11-01), Willmot
patent: 6808468 (2004-10-01), Miyazaki et al.
patent: 6994646 (2006-02-01), Ai
patent: 447801 (1997-07-01), None

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