Planetary gear transmission for a light vehicle such as a motorcycle
US5951434A · kind A · utility
Inventors
Key dates
| Filing date | Aug 31, 1998 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Aug 31, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2007
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission used as part of a drive unit to transmit power is coupled to a V6 engine drive shaft by a torque converter and includes an axially extending ring gear assembly, a sun gear positioned coaxially within part of the ring gear assembly and two planetary gear assemblies each spaced axially from the other and meshing with the sun gear and the ring gear assembly. The ring gear assembly is driven in rotation about its axis and an output drive shaft by the rotational forces of the motor output shaft and includes two different diameter annular ring gears which are each centered on and extend radially about the transmission axis. The annular ring gears have different diameters and radially inwardly extending teeth. The sun gear includes a portion axially aligned within each of the two ring gears. A clutch plate or pack, gearing or other band or pressure brake is provided to selectively permit or prevent the rotation of the sun gear about the transmission axis and relative to the output drive shaft. A first planetary gear assembly includes one or more planetary gear pinions meshing with the teeth of the smaller diameter ring gear and its axially aligned portion of the sun gear. T…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.