Power-delivery belt-tensioning system
US4781665A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1987 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Aug 31, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2007/0893
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A first pulley is coupled by a flexible belt to a second pulley for delivering power from a source to a driven device. An idler pulley is urged against the belt to create tension therein. A cam, coupled for swinging movement to the idler pulley, faces against a cam guide in a manner to vary the spacing between the guide and the idler pulley in correspondence with the amount of swinging movement. A spring secured to the cam nudges the latter in a direction to incrementally increase the spacing between the guide and the pulley in order to maintain a pre-selected degree of tension in the belt upon the occurrence of a surge in power delivered from the source to the driven device with consequent incremental permanent stretching of the belt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.