Speed change gear system
US3971268A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1974 |
| Grant date | Jul 27, 1976 |
| Priority date | — |
| Expiry date | Oct 11, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2012
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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 thi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.