PTC heating unit suitable for use in motor vehicles
US7399948B2 · kind B2 · utility
0Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2004 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | Jan 19, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heating unit having a PTC element, in particular for a motor vehicle, with corrugated fins (6) arranged around the PTC element (2) for improved transfer of heat to air flowing through the heating unit. The heating unit has a plastic frame (7) which is of two-part design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.