Composite heating element with an integrated switch
US8008606B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2007 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Apr 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2214/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a composite heating element suitable for heating an article when activated by a power source. The composite heating element comprises a first backing layer and a discontinuous circuit formed of a conductive material disposed on the first backing layer. The discontinuous circuit has terminal ends for electrical connection with the power source and defines at least one gap between the terminal ends. The composite article further comprises a second backing layer spaced from the first backing layer. A trace formed of a conductive material is disposed on the second backing layer. The trace is aligned with the at least one gap for forming a complete circuit when the first and second backing layers at least partially abut each other with the trace extending across the gap and contacting the discontinuous circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.