Three-speed planetary transmission
US4696205A · kind A · utility
4Cited by
14References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 4, 1986 |
| Grant date | Sep 29, 1987 |
| Priority date | — |
| Expiry date | Feb 4, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A three-speed planetary transmission having a single ring gear and dual planetary gear sets meshing with the single ring gear. Gear changes are effected by coupling or alternately fixing a set of two sun gears which mesh with the two planetary gear sets. This transmission can provide a direct drive and two other speed ratios. Utilizing a single ring gear in combination with two planetary gear sets allows nesting of gear elements and economy of space for the transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.