Slotted autoregulating heater
US4717814A · kind A · utility
202Cited by
15References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1984 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Mar 6, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Designation of specific heating zones and increase in minimum resistance relative to prior heaters of the type to which the present invention pertains is achieved, together with flexibility or bendability, if desired, by slotting the outer conductor of the heater. Additional flexibility is also achieved by confining the high mu material only to those regions of the device where heating is desired, the unslotted regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.