Wide speed-range multi-speed power shift transmission
US5011465A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1990 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Apr 20, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H3/66
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An in-line transmission provides 26 useful speeds, including 19 forward speeds and 7 reverse speeds. The transmission includes a main planetary having three sets of planetary gears, as well as a separate hi-lo planetary. At least the first and second sets of planetary gears on the main planetary carrier are formed of double gears. Each side of the first set of double gears has its own ring gear which is independently brakable relative to the housing and its own sun gear. Drive from the input shaft to these two sun gears is provided along two main paths, one direct and the other through the hi-lo planetary. One side of the second set of double gears also has an independently brakable ring gear, as well as a sun gear connected to the output shaft. However, the other side of the second set of double gears meshes only with the third set of planetary gears, which preferably are single gears. The third set of planetary gears has its own independently brakable ring gear, and its own sun gear which is both brakable to the housing and clutchable to the main planetary carrier. The hi-lo planetary carrier preferably also uses double gears as planetary gears, with its ring gear meshing with on…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.