Device utilizing a PTC resistor for electrically heating flowing liquid or gaseous media
US5278940A · kind A · utility
Inventor
Key dates
| Filing date | Jul 26, 1991 |
| Grant date | Jan 11, 1994 |
| Priority date | — |
| Expiry date | Jul 26, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/82
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for heating flowing liquid or gaseous media has a heating element including a PTC resistor arranged between a pair of perforated metallic bodies serving as power supply terminals for the resistor. The heating element is positioned inside a tubular housing defining a flow path for the medium to be heated and made of two mating housing parts, with the heating element extending across the flow path for flow of the medium through the perforations of the metallic bodies to transfer heat to the medium. A bracket on each metallic body fastens the heating element to the housing and is electrically connected to a contact on one end of a power supply cable molded as an integral part of one of the housing parts and terminating at its other end in an electrical plug outlet on the housing part connectable to a battery or electrical network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.