Dual-Power Transmission Device for a Twin-Rotor Helicopter
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United States of America Patent
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-
N/A
Issued Date -
Mar 5, 2009
app pub date -
Aug 29, 2007
filing date -
Aug 29, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A dual-power transmission device includes: a first output shaft secured rotatably in a housing and having a first rotor coupling portion extending outwardly of the housing; a second output shaft disposed to surround the first rotor coupling portion, secured rotatably in the housing, and having a second rotor coupling portion extending outwardly of the housing; first and second bevel gears mounted respectively on the first and second output shafts; first, second and third thrust bearings for positioning the first and second bevel gears in the housing; and first and second input units respectively coupled to first and second power sources and each meshing with the first and second bevel gears.
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