Planetary harmonic differential transmission
US8852048B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 19, 2011 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Aug 3, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2025/066
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Described is a planetary harmonic differential transmission, comprised of a rigid externally-toothed inner sprocket, a rigid internally-toothed outer sprocket, a deformable belt that is toothed on both its internal and external faces, and a set of free-rotating planetary sprockets that are mounted on a rotating carrier cage and cause the belt to progressively engage and disengage from successive portions of the rigid sprockets. The input to the transmission is the relative motion between the carrier cage and the inner sprocket, and the output is the relative motion between the outer sprocket and the inner sprocket, resulting in a differential transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.