发明名称 |
HEATING APPARATUS FOR DRAWING GLASS ROD |
摘要 |
A heating apparatus (K1) for drawing a glass rod (A) having a tapered portion (A') coupled, at its upper end, with a feed bar (8) of an outside diameter smaller than that of the glass rod (A), including an apparatus housing (1) into which the glass rod (A) is inserted, a first sealing cover (7) which is formed with a bore having such a dimension as to seal a clearance between the glass rod (A) and the bore and is hermetically mounted on an inlet opening (2) of the apparatus housing (1) and a second sealing cover (9) which is movably attached to the feed bar (8) and is formed with an aperture having such a dimension as to seal a clearance between the feed bar (8) and the aperture. The second sealing cover (9) has a hollow portion (9a) which is formed with a space for accommodating the tapered portion (A') and is hermetically placed, at its lower end (9b), on the inlet opening (2). |
申请公布号 |
DE3760994(D1) |
申请公布日期 |
1989.12.21 |
申请号 |
DE19873760994 |
申请日期 |
1987.08.06 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES LIMITED |
发明人 |
MIZUTANI, FUTOSHI C/O YOKOHAMA WORKS;MUKAI, KATSUZOU C/O YOKOHAMA WORKS;KUWAHARA, TOHRU C/O YOKOHAMA WORKS |
分类号 |
G02B6/00;C03B23/043;C03B23/047;C03B37/012;(IPC1-7):C03B37/012;C03B23/04 |
主分类号 |
G02B6/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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