Thermal response type fluid fan coupling device
US4796571A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Dec 14, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D35/022
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A thermal response type fluid fan coupling device which is constituted by a sealed chamber which is divided into an oil accumulating chamber and a torque transmission chamber, and which accommodates a driving disc, by a separating plate having an oil flow adjusting hole, in which a dam is provided in a circulated passage connecting the torque transmission chamber and the oil accumulating chamber, and a valve member for opening and closing the flow adjusting hole in accordance with change in ambient temperature is provided so as to control torque transmission from the driving side to the follower side by changing the effective oil contact area in a gap for transmitting torque between the driving disc and the case and the cover, wherein an idle oil accumulating chamber which is connected to an oil introducing gap which is connected to the torque transmission chamber is provided at the position outer than the dam in the radial direction, and oil introducing means for connecing the oil accummulating chamber and the torque transmission chamber only when the device is stopped is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.