Continuously variable ratio transmission

Details Continuously variable ratio transmission Continuously variable ratio transmission

2006-10-03

2006-10-03

Ho, Ha (Department: 3681)

Interrelated power delivery controls, including engine control

Electric engine

With transmission control

C475S005000, C475S153000

Reexamination Certificate

active

07115066

ABSTRACT:
A continuously variable ratio transmission including a planetary gear set having a sun gear, a ring gear, and a planet carrier having at least two planet gears carried thereon, a control element including a servogenerator capable of generating electric power, and at least one auxillary field coil adapted to be operatively connected to an output means to influence a power output level and AC power frequency of the output means, the at least one auxillary field coil being powered by the servogenerator and constituting a load to the servogenerator, the speed of the servogenerator being capable of being controlled by the load; and a means for controlling an electrical current to the at least one auxiliary field coil form the servogenerator; where the servogenerator is capable of being driven to produce electrical power by a rotation of one of the sun gear, the ring gear, and the planet carrier.

REFERENCES:
patent: 3831463 (1974-08-01), Ahlen
patent: 4973295 (1990-11-01), Lee
patent: 6647328 (2003-11-01), Walker
patent: 6968260 (2005-11-01), Okada et al.

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