发明名称 |
Torch for fabricating optical fiber preform |
摘要 |
A torch for fabricating an optical fiber perform which has a plurality of raw gas injection passages at the center of the torch, a plurality of small-diameter combustion supporting gas injection passages independent of each other and disposed to surround the raw gas injection passages on the outer periphery of the raw gas injection passages disposed at the center of the torch, and an annular combustible gas injection passage disposed around the small-diameter combustion supporting gas injection passages. Thus, the torch can stably manufacture porous glass preforms.
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申请公布号 |
US4810189(A) |
申请公布日期 |
1989.03.07 |
申请号 |
US19870013088 |
申请日期 |
1987.02.10 |
申请人 |
FURUKAWA ELECTRIC CO., LTD. |
发明人 |
MIKAMI, MASATOSHI;MATSUBARA, KUNIHIRO |
分类号 |
F23D14/52;C03B8/04;C03B37/014;C03B37/018;G02B6/00;(IPC1-7):F23D14/62 |
主分类号 |
F23D14/52 |
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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