Electric heating device
US11420281B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2019 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | May 13, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K3/063
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric heating device includes a body and a heating head connected to the body. The heating head includes an electric heating wire and a heat storage member. The electric heating wire includes a first section and a second section connected to the first section. The first section is made of pure nickel. The second section is made of ferrochrome. The heat storage member is mounted around an outer radial periphery of the second section. The heat storage member is made of porcelain clay. The electric heating wire is connected by sections of three different materials so that the heating head can be raised to a very high temperature with extremely high heat generation efficiency, and the electric heating device is not easily damaged by high temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.