Tubular heater with insulating material in the connection end region
US7496284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2007 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Feb 6, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heating apparatus for heating a fluid, in particular in domestic appliances, which comprises a tubular casing, at least one electrical resistance heating wire which is arranged in the interior of the tubular casing and which is embedded in an electrically insulating, heat-conducting insulating material in the tubular casing, at least one connection unit which is arranged in the interior of the tubular casing and which is passed outwardly out of the tubular casing for connection of the electrical resistance heating wire to an electrical energy source disposed outside the tubular casing, and at least one closure bead which closes the opening of the tubular casing. It is further provided that the connection unit is also surrounded by the insulating material within the tubular casing to the closure bead and the closure bead is, at its outside, provided with at least one filling slot which extends over its entire axial length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.