Geartrain for a five-speed automatic transmission
US5885184A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Dec 29, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/0047
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A geartrain for a five-speed automatic transmission including first and second compound planetary gear units. The first compound planetary gear unit includes first and second simple planetary gearsets having first, second and third operating elements. The first operating element acting as an input element. The second compound planetary gear unit includes third and fourth simple planetary gearsets having fifth, sixth, seventh and eighth operating elements. The fifth operating element acts as an output element. The sixth operating element is variably connected to either the first operating element or the second operating element. The seventh operating element is fixedly connected to the fourth operating element. Clutches for variably connecting the sixth operating element to either the first operating element or the second operating element are provided. Brakes for selectively connecting the third and eighth operating element to a transmission housing are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.