TRANSMISSION SYSTEM
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United States of America Patent
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Issued Date -
N/A
app pub date -
Jan 17, 2007
filing date -
Dec 10, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Transmission systems are disclosed which include a dual sunwheel system having an output sunwheel (70) and a control sunwheel (80). A planet cage 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) and (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, output 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 the input cage or the control sunwheel to thereby set the drive ratio of the transmission. The control devices include a motor (323), one or more magnetic powder clutches (110, 120, 640), a variable centroid system (662), and a mechanical pitch transfer gear system (950).
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