Belt tensioning device
US4854922A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1989 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Feb 27, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2007/0891
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tensioning device for belts, chains and similar components especially for the camshaft drive of an internal combustion engine comprising a tension roller mounted on a movable support and a control element by which the support can be moved by an actuating mechanism in the relaxing direction of the belt against the action of a pressure spring when the control element gets heated, characterized in that the control element has a cavity for receiving a pressure liquid whose volume varies as a function of the temperature, the cavity being closed by a membrane connected to the actuating mechanism which operates dependably for long periods of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.