Electrical heating apparatus with a heating element of PTC material
US4341949A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1980 |
| Grant date | Jul 27, 1982 |
| Priority date | — |
| Expiry date | Aug 6, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/017
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electrical heating apparatus, including a frame formed of insulating material having an opening formed therethrough, a heating element formed of positive temperature coefficient material having two opposing outer surfaces and being disposed in the opening formed in the frame, an electrically-conducting current supply contact layer disposed on each of the two opposing outer surfaces of the heating element, an electrically conducting current input electrode plate formed of yieldable material being anchored in the frame and being disposed on each of the contact layers forming an integral structural unit enclosing the heating element, and a heat conducting plate formed of insulating material disposed on each of the electrode plates receiving heat transfered through the contact layers and clamping the heating element under pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.