Speed change gear system
US4027552A · kind A · utility
27Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1975 |
| Grant date | Jun 7, 1977 |
| Priority date | — |
| Expiry date | Apr 22, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2012
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A speed change gear system of the planetary gear type suited for applications within fluid couplings used upon automobiles includes three simple planetary gear sets of the single pinion type and the double pinion type, two clutch units, and three brake units. The movable members of the three planetary gear sets are suitably coupled to each other, and the brake units are suitably locked and unlocked so as to attain the desired speed ranges, that is, at least four forward drive speeds and at least one reverse drive speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.