Automotive fan controller
US5408575A · kind A · utility
16Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1992 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Jun 1, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2037/763
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vehicle fan motor controller includes a simple planar ceramic base providing a plurality of printed resistors. The resistors include electrically conductive paths printed on the ceramic overcoated with a thick resistive film. The thick film substantially covers the base to promote heat transfer to air moving in the fan duct in which the controller is placed. The thick film resistors are on both sides of the base to reduce overall size and improve heat transfer. A thermal fuse comprising a spring metal member held in a normally closed position by a meltable material opens in response to a predetermined high temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.