Flexible high temperature heater
US4631392A · kind A · utility
16Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1984 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Jul 13, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An assembly comprising a flexible corrugated metal tube and an elongate resistive heating element that is within the tube and which can be connected to a power supply to provide an elongate electrical heater. The tube has a wall thickness less than 0.012 inch, a corrugation depth greater than 0.030 inches and a distance between corresponding points in adjacent corrugations from 0.02 inch to 0.75 inch. The corrugations extend around the entire periphery of the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.