Machine element or mechanism – Gearing – Directly cooperating gears
Reexamination Certificate
2006-08-16
2011-12-27
Krause, Justin (Department: 3656)
Machine element or mechanism
Gearing
Directly cooperating gears
C074S424920
Reexamination Certificate
active
08082818
ABSTRACT:
A sun shaft, planetary shafts, and a ring shaft having respective axes of rotation in parallel with one another are provided. A helical sun gear, helical planetary gears, and a helical ring gear are provided on the sun shaft, the planetary shafts, and the ring shaft, respectively, and cooperatively constitute a first planetary gear mechanism. A screw sun gear, screw planetary gears, and a screw ring gear 44 are provided on the sun shaft, the planetary shafts, and the ring shaft, respectively, and cooperatively constitute a second planetary gear mechanism. Either of the gear ratio of the screw sun gear to the screw planetary gears and the gear ratio of the screw ring gear to the screw planetary gears differs from the gear ratio of the helical sun gear to the helical planetary gears and from the gear ratio of the helical ring gear to the helical planetary gears.
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Krause Justin
Oliff & Berridg,e PLC
Toyota Jidosha & Kabushiki Kaisha
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