Powertrain for a five-speed automatic transmission
US5941791A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1997 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Dec 29, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2041
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A powertrain for a five-speed automatic transmission includes a first planetary gear unit comprising a first simple planetary gearset having first, second and third operating elements, a second planetary gear unit comprising second, third and fourth simple planetary gearsets having fourth, fifth, sixth, seventh, and eighth operating elements, clutches for selectively connecting the first and second operating elements to the fifth and sixth operating elements, respectively, and brakes for selectively connecting the second and eighth operating elements to a transmission housing so that the second and eighth operating elements can selectively operate as reacting elements. The seventh operating element is connected to the third operating element of the first planetary gear unit, and the fifth and sixth operating elements are connected to the first and second operating elements, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.