Planetary gear transmission systems or components – Planetary gearing or element – Coaxial teeth around planet pinion engage axially spaced...
Reexamination Certificate
2007-11-16
2011-11-15
Holmes, Justin (Department: 3655)
Planetary gear transmission systems or components
Planetary gearing or element
Coaxial teeth around planet pinion engage axially spaced...
C074S458000
Reexamination Certificate
active
08057351
ABSTRACT:
A planetary gear device having two sun gears with different diameters that engage with double planet gears having a first gear teeth area, which interacts with the fist sun gear, and a second gear teeth area, which interacts with the second sun gear. The double planet gears are continuous helical gear wheels. The crown circle diameters of the gear teeth areas of the double planet gears and the crown circle diameters of the sun gears are adapted such that the pitch circle diameters between the double planet gears and the sun gears are arranged in the center between the crown circle diameters and the effective root diameters of the gear teeth areas of the double planet gears and the sun gears.
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Benkler Karl
Brenner Klaus-Peter
Humm Klemens
Joachim Franz-Josef
Davis & Bujold P.L.L.C.
Holmes Justin
Le Huan
ZF Friedrichshafen AG
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