Planetary gear control system with retarder
US4497219A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 16, 1982 |
| Grant date | Feb 5, 1985 |
| Priority date | — |
| Expiry date | Aug 16, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2023
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gear system having a plurality of discrete gear ratios includes a retarder connected to a gear component intermediate between an input shaft and an output shaft. The gear component connected to the retarder is coupled to the output shaft with the same relative gear ratio greater than 1 in at least two adjacent ones of the discrete gear ratios of the gear system. The use of a relative gear ratio greater than 1 permits the use of a physically smaller retarder. The use of the same relative gear ratio between the retarder and the output shaft in at least two adjacent gear ratios of the gear system avoid jolts during shifting with the retarder engaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.