Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid pump and motor in one of plural paths to or from...
Reexamination Certificate
2007-03-19
2011-11-01
Wright, Dirk (Department: 3655)
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid pump and motor in one of plural paths to or from...
Reexamination Certificate
active
08047942
ABSTRACT:
The apparatus includes a hydrostatic stepless speed change section20receiving an output of an engine1, a planetary transmission section3ahaving a plurality of planetary transmission mechanisms PF, PR and a plurality of output members41, 42, the planetary transmission section being configured to combine a drive force outputted from the hydrostatic stepless speed change section20and an engine drive force that has not been subjected to any speed change action by the hydrostatic stepless speed change section20, and a speed change output section3bhaving an output shaft70, the speed change output section being configured to output combined drives force outputted from the plurality of output members41, 42in a plurality of different speed ranges from the output shaft70. The speed change output section3bincludes a plurality of transmission mechanisms71-74disposed between the plurality of output members41, 42and the output shaft70, and clutches CL1-CL4provided in correspondence with the respective plurality of transmission mechanisms.
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Katayama Yoshiyuki
Morita Shin-ichi
Ueda Yoshihiro
Kubota Corporation
The Webb Law Firm
Wright Dirk
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