Method and apparatus for introducing a protective atmosphere into a glass forming chamber
US3976460A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1975 |
| Grant date | Aug 24, 1976 |
| Priority date | — |
| Expiry date | Jul 16, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B18/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The glass forming chamber in which glass is formed into a continuous sheet by floating it on the surface of molten metal is provided with a series of heat exchangers in an enclosed shell above the chamber and protective atmosphere gases are passed through these heat exchangers to preheat the atmosphere gases which are then directed through conduits into headers and distribution manifolds located within the headspace of the operating portion of the chamber in the vicinity of the glass being formed. The chamber is provided with conventional electrical heating elements connected to bus bars located within the shell containing the heat exchangers, and the heat exchangers are located close to the bus bars to extract heat from them during operation and thereby prolong their useful lives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.