Family of multi-speed transmission mechanisms with three input clutches and three planetary gearsets
US6709360B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2002 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Aug 2, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2097
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A family of transmission mechanisms having at least six forward speeds wherein each family member includes three planetary gearsets, five torque transmitting mechanisms, and three interconnecting members. The planetary gear sets each have three members (sun gear member, ring gear member, and planet carrier assembly member). The interconnecting members provide continuous interconnection between the members of the planetary gearsets. An output shaft is continuously interconnected with at least one member of one of the planetary gearsets. An input shaft is selectively interconnectable with members of the planetary gearsets through three of the torque transmitting mechanisms (clutches). The two other torque transmitting mechanisms (clutches or brakes) selectively interconnect members of the planetary gear sets or selectively interconnect a housing with at least one member of the planetary gearsets. The torque transmitting mechanisms are selectively engageable in combinations of two to establish at least six forward speed ratios and one reverse speed ratio between the input shaft and the output shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.