Arrangement for minimizing leakage from heated chambers and method for making same
US4425191A · kind A · utility
6Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1981 |
| Grant date | Jan 10, 1984 |
| Priority date | — |
| Expiry date | Sep 11, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10B25/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A heated chamber having at least one opening; closure means for closing said at least one opening, said closure means having at least a closed and open position; said closure means and said opening having surfaces disposed for coming into proximity of one another in said closed position, said surfaces forming a primary sealing means for said heated chamber in said closed position, there being a substance applied to at least one of said proximate surfaces, said substance having a property of expanding upon the application of heat thereby forming a secondary sealing means between said proximate surfaces in said closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.