Chain tensioner with a spring and hydraulic fluid acting on both sides of a piston
US5993339A · kind A · utility
2Cited by
12References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1997 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Oct 15, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2007/0891
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A chain tensioner for tensioning a chain in a drive of an internal combustion engine comprises a piston displaceable within a chamber. The piston is biased by a compression spring so that it protrudes from the housing towards the chain to provide the tension. The chamber has an inlet connected to a supply of oil from the engine. The oil acts on each side of the piston with substantially the same pressure such that the piston is damped in both directions when moving in the chamber. The surface areas of the piston on which the oil acts may be substantially equal so that no tensioning force is supplied by the oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.