Open coil electric resistance heater using twisted resistance wires and methods of making
US6737616B1 · kind B1 · utility
14Cited by
13References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2003 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Apr 2, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An open coil resistance heating apparatus uses a pair of twisted wires having a particular gauge and pitch as the resistance heating wire. Using the twisted pair of wires in the selected gauge and pitch results in significant cost reductions; less wire is needed to achieve the same heating capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.