Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Fluid resistance inhibits relative rotation
Patent
1994-07-05
1995-12-05
Wright, Dirk
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Fluid resistance inhibits relative rotation
475 92, F16H 374
Patent
active
054723825
ABSTRACT:
A stepless transmission system with a powering input shaft drivingly connected to a first sun gear, the first sun gear surrounded by a first planet gear carrier containing a number of planet gears disposed in a peripheral segment thereof so as to drivingly engage the first sun gear, and a first ring gear disposed about the first planet gear carrier so as to engage the first set of planet gears along an interior drive surface of the first ring gear such that regulated movement of the first ring gear controls movement of the first planet gear carrier that results from rotation of the input shaft and accordingly first sun gear. Additionally, the system includes a second sun gear surrounded by a second planet gear carrier, with a second set of planet gears rotatably disposed therein, the second set of planet gears being surrounded by a second ring gear that is actually connected with the first planet gear carrier such that rotation of the first planet gear carrier correspond rotation of the second ring gear. Finally, the system includes a third sun gear disposed on the input shaft, the third sun gear surrounded by a third planet gear carrier containing a third set of planet gears rotatably disposed within a peripheral segment thereof, the third set of planet gears drivingly engaging the third sun gear and drivingly engaging an interior drive surface of a third ring gear disposed thereabout such that rotation of the third ring gear is regulated through its connection with the second planet gear carrier, and finally stepped rotation of the third planet carrier connected to an output shaft results.
REFERENCES:
patent: 2212046 (1940-08-01), Ross
patent: 2842011 (1958-07-01), Skowron
patent: 2891423 (1959-06-01), Connell et al.
patent: 3893352 (1975-07-01), Cotton
patent: 4729261 (1988-03-01), Tervola
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