Electrical heating device
US9693394B2 · kind B2 · utility
3Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2016 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | May 9, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/023
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Disclosed is an electrical heating device for heating the interior of a vehicle, comprising a plurality of PTC heating rods each comprising ceramic PTC heating resistors, heat sinks for transferring heat from the PTC heating rods to an air flow, and a holder holding the PTC heating rods. The PTC heating rods are connected in series to an NTC heating rod comprising at least one NTC resistor, wherein the NTC heating rod is held by the holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.