Apparatus for production of graphite fibers
US4321446A · kind A · utility
12Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1980 |
| Grant date | Mar 23, 1982 |
| Priority date | — |
| Expiry date | Aug 21, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/104
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A vertical heating apparatus for production of graphite fibers from preoxidized fibers or carbon fibers comprises of a tubular heating element which generates heat by high frequency induction. A heat-insulating material layer surrounds the tubular heating element coaxially. The layer is composed of carbon particles having specific grain diameters and angles of repose. A high frequency induction unit is provided around the heat-insulating material layer also in a coaxial relation thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.