Tensioning device for belts and the like, in particular on motor vehicle engines
US4813915A · kind A · utility
Inventor
Key dates
| Filing date | May 17, 1988 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | May 17, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2007/0893
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a tightening device for belts and the like, in particular on motor vehicle engines, having a friction bushing and a helical spring cooperating with the friction bushing, it is provided, in order to attain good cushioning and damping of low-amplitude vibrations and shocks with a simple constructional design, that the wall of the annular gap is embodied deviating from a circular cross section and correspondingly resting against the helical spring in such a way that the pressing force of the helical spring on the friction bushing is reduced or rescinded in an intermediate position established as the basic position in the operating state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.