Valve timing control device
US5845615A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Dec 12, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2102
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve timing control device includes a rotational shaft for opening and closing a valve, a rotational transmitting member rotatably mounted on the rotational shaft, a vane connected to one of the rotational shaft and the rotational transmitting member, a chamber defined between the rotational shaft and the rotational transmitting member and divided into a first pressure chamber and a second pressure chamber by the vane being extended into the chamber, a fluid supply device for supplying fluid under pressure to at least a selected one of the first pressure chamber and the second pressure chamber, a locking mechanism for connecting the rotational shaft and the rotational transmitting member when the relative phase between the rotational shaft and the rotational transmitting member is in a predetermined phase and a damping mechanism for damping the locking operation of the locking means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.