Automatic transmission
US5911642A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1998 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Jan 8, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2046
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission (10) comprising a housing (12); a planetary gear train (14) mounted within the housing; an input drive shaft (16) connectable to main drive means (38) to provide input drive to the planetary gear train; an output drive shaft (18) from the planetary gear train; and an auxiliary drive means (E) for providing a variable auxiliary drive input (34) to the planetary gear train; wherein the planetary gear train includes a first planetary gear set (40) and a second planetary gear set (42); the first planetary gear set including a sun gear (44) having a drive input (26) connectable to the input drive shaft and a reaction input (28) connectable to the housing, a pinion gear (46) interengaging with the sun gear, and a pinion carrier (48) on which the pinion gear is rotatably mounted, the pinion carrier having a drive input (24) connectable to the input drive shaft and a reaction input (30,32) connectable to the housing, and being connected with the auxiliary drive input; the second planetary gear set including a sun gear (50) having a drive input (22) connectable with the input drive shaft; and wherein the output drive shaft is driven by a ring gear (54) of the first…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.