Temperature sensitive type fluid fan coupling apparatus
US5125491A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1991 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | Jun 18, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D35/022
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Herein disclosed is a temperature sensitive type fluid fan coupling apparatus which comprises: a sealed container including a casing and a cover, the container being borne through a bearing on a rotating shaft, which has a drive disc fixed to its leading end, and having a cooling fan attached to its outer circumference; a partition dividing the inside of the sealed container into an oil sump and a torque transmission chamber housing the drive disc, a dam formed in a portion of such an inner circumference of the sealed container as faces the outer circumference of the drive disc, on which the oil is collected at the time of rotation; a circulation passage communicating with the dam and leading from the torque transmission chamber to the oil sump; a valve member fitted in the oil sump for opening an outflow adjusting orifice leading to the torque transmission chamber, if the ambient temperature exceeds a preset value, and closing the same if below the preset value; and a temperature sensing element mounted on the front face of the cover and associated with the valve member if deformed in accordance with the temperature change. Thus, the effective contact area of the oil at a torque t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.