Transmission device for a twin-rotor helicopter
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United States of America Patent
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Aug 31, 2010
Grant Date -
Mar 5, 2009
app pub date -
Aug 29, 2007
filing date -
Aug 29, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A transmission device includes: a transmission shaft having first and second shaft sections and a gear mounting portion; a first tube sleeved rotatably on the first shaft section, and including a tube body and an annular portion; a second tube sleeved on the second shaft section; a plurality of first planetary bevel gears mounted rotatably on the gear mounting portion; a plurality of second planetary bevel gears mounted rotatably on the annular portion; a transmission gear disposed rotatably on the tube body and meshing with the first and second planetary bevel gears; a first output bevel gear disposed rotatably on the second tube and meshing with the first planetary bevel gears; and a second output bevel gear disposed rotatably on the tube body of the first tube and meshing with the second planetary bevel gears.
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