Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1974-10-11
1976-07-27
Scott, Samuel
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74753, 74767, 74769, 74770, F16H 5710
Patent
active
039712680
ABSTRACT:
A speed change gear system includes an input shaft, an output shaft and three planetary gear sets interposed therebetween. The first planetary gear set includes a first sun gear, a first planetary gear intermeshed with the first sun gear, a first ring gear enmeshed with the first planetary gear, and a first carrier rotatably supporting the first planetary gear while the second planetary gear set includes a second sun gear, a second planetary gear enmeshed with the second sun gear, a second ring gear intermeshed with the second planetary gear and drivingly connected to the first carrier, and a second carrier rotatably supporting the second planetary gear. The third planetary gear set similarly includes a third sun gear drivingly connected to the second sun gear, a third planetary gear interengaged with the third sun gear, a third ring gear enmeshed with the third planetary gear and drivingly connected to the second carrier and the first ring gear, and a third carrier rotatably supporting the third planetary gear and drivingly connected to the output shaft. A first clutch is provided for engaging or disengaging the input shaft with the first ring gear, the second carrier, and the third ring gear, and a second clutch is similarly provided for engaging or disengaging the input shaft with the first carrier and the second ring gear while a third clutch is additionally provided for engaging or disengaging the input shaft with the first sun gear. A first brake is also provided for fixedly securing the first sun gear relative to the gear casing while a second brake is similarly provided for fixedly securing the first ring gear, the second carrier, and the third ring gear to the casing, and a third brake is also provided for fixedly securing the second and third sun gears to the casing.
REFERENCES:
patent: 3067632 (1962-12-01), Foerster et al.
patent: 3823622 (1974-07-01), Mori et al.
Hirosawa Koichiro
Matsuo Koichi
Murakami Noboru
Ohara Kazuo
Aisin Seiki Kabushiki Kaisha
Chandler Lance W.
Scott Samuel
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