Multi-speed transmission
US7549942B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 2007 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Mar 1, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2097
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The multi-speed transmission with nine forward gears and one reverse gear comprises four planetary gear sets (P1, P2, P3, P4), seven rotatable shafts (1, 2, 3, 4, 5, 6, 7), as well as six control elements (03, 04, 05, 15, 17, 36), wherein the input shaft (1) is connected to the carrier of the planetary gear set (P1) and can be connected via a clutch (15) to the shaft (5), which is connected to the carrier of the third planetary gear set (P3) and can be coupled to the housing (G), wherein the sun gear of the planetary gear set (P1) is connected to the housing (G), the shaft (4) is connected to the ring gear of the planetary gear set (P3) and to the sun gear of the planetary gear set (P4) and can be coupled to the housing (G), wherein the shaft (3) is connected to the ring gear of the planetary gear set (P2) and to the carrier of the planetary gear set (P4) and can be coupled to the housing (G), and the shaft (6) is permanently connected to the ring gear of the planetary gear set (P1) and to the sun gear of the planetary gear set (P3), wherein the shaft (7) is connected to the sun gear of the planetary gear set (P2) and the output shaft (2) is connected to the ring gear of the planet…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.