Electrical tubular heating element with connecting pin and manufacturing method for electrical tubular heating element with connecting pin
US11910496B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 2020 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Mar 5, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/014
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical tubular heating element is disclosed with a tubular metal sheath, in whose interior at least one electrical heating element, which is constructed as a resistive wire, arranged electrically insulated from the tubular metal sheath at least in sections, in which the electrical heating element has a base body, which consists of one or more sections of the electrical heating element each with essentially constant cross section, and two end sections and that at least one end section of at least one of the electrical heating elements is subjected to a shape-changing process, so that the cross section of the end section is reduced at least in sub-areas of the end section in comparison to the cross section in each section of the base body. A method for manufacturing such an electrical tubular heating element is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.