| 摘要 |
<p>ANNEALING FURNACE A protective sleeve, for a cover used to enclose metal coils in an annealing furnace having a plurality of fuel burners whereby the coils are protected from the direct flame of the burners, comprising a circumscribing band mounted on the cover and held in spaced relationship from the cover, the band being interposed between the cover and the burners.</p> |
