Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1974-10-11
1976-05-18
Scott, Samuel
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74753, 74769, 74770, F16H 5710
Patent
active
039569462
ABSTRACT:
A speed change gear system of the planetary gear type suited for applications within fluid couplings used upon automotive vehicles includes an input shaft and a first planetary gear set which includes a first sun gear, a first planetary gear engaged with the first sun gear, a first ring gear engaged with the first planetary gear, and a first carrier rotatably supporting the first planetary gear. A second planetary gear set similarly includes a second ring gear drivingly connected to the first carrier, a second planetary gear engaged with the second ring gear, a second sun gear engaged with the second planetary gear, and a second carrier rotatably supporting the second planetary gear, while a third planetary gear set likewise includes a third sun gear drivingly connected to the second sun gear, a third planetary gear engaged with the third sun gear, a third ring gear engaged with the third planetary gear and drivingly connected to the first ring gear and the second carrier, and a third carrier rotatably supporting the third planetary gear.
A first clutch is provided for simultaneously coupling or uncoupling the second and third sun gears to or from the input shaft while a second clutch is also provided for simultaneously coupling or uncoupling the second carrier and the first and third ring gears to or from the input shaft, and a third clutch is likewise provided for coupling or uncoupling the first sun gear to or from the input shaft. A first brake is also provided within the system and is capable of being actuated for locking the first sun gear to the gear casing, while a second brake is likewise provided and is capable of being actuated for simultaneously locking the first carrier and the second ring gear to the casing and a third brake is similarly capable of being actuated for simultaneously locking the first and third ring gears and the second carrier to the casing. The output shaft is dynamically connected to the third carrier as one integral unit.
REFERENCES:
patent: 2651950 (1953-09-01), Schou
patent: 2672767 (1954-03-01), Schneider
patent: 3067632 (1962-12-01), Foerster et al.
patent: 3282131 (1966-11-01), Smith
Hirozawa Koichiro
Matsuo Koichi
Murakami Noboru
Ohara Kazuo
Aisin Seiki Kabushiki Kaisha
Chandler Lance W.
Scott Samuel
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