External control type fan clutch device
US10670089B2 · kind B2 · utility
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Key dates
| Filing date | Jul 22, 2016 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Feb 14, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P7/081
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An external control type fan clutch device has an electromagnet fixed to a rotating shaft. The electromagnet is energized to activate a valve member formed of a plate spring and an armature and provided to a drive disk or a sealed housing to externally control opening and closing an oil circulating flow passage (oil supply port). The valve member is structured so that the armature attached to the plate spring of the valve member is divided into a plurality of pieces in the direction from the base end side to the oscillating end side of the plate spring to provide a plurality of bend points of the plate spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.