Patent EP0432791A1 successfully refreshed from Google Patents.
EP0432791A1
Expired / Lapsed
EP
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Method for heating glass body
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1990-12-14
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Granted: —
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Expires: 2010-12-14
Abstract
Abstract The invention relates to the prevention of redeposition of glass particles (21) by a method for heating a glass body (10) comprising heating a part of the glass body (10) with relatively moving the glass body and a heating source (13), wherein an inert gas is blown from inert gas-blowing means (20) onto a surface of the glass body (10) near a heated part of the glass body (10).
Inventors
- 👤 Hiroo C/O Yokohama Works Of Sumitomo Kanamori
- 👤 Manzo C/O Yokohama Works Of Sumitomo Yamaguchi
- 👤 Hikaru C/O Yokohama Works Of Sumitomo Satoh
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 13:38
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/012; C03B37/014; C03B37/0148; C03B23/00; C03B23/04; C03B23/043; C03B23/047; C03B37/01205; C03B37/01225; C03B37/01228; C03B37/0124; C03B37/01257
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
61 words
A method for heating a glass body comprising heating a part of the glass body with relatively moving the glass body and a heating source, wherein an inert gas is blown from inert gas-blowing means onto a surface of the glass body near a heated part of the glass body to prevent redeposition of glass particles on the glass body surface.
Claim 2
Dependent Claim
19 words
The method according to claim 1, wherein said glass body is a glass preform for fabricating an optical fiber.
Claim 3
Dependent Claim
13 words
The method according to claim 1, wherein said glass body is fire polished.
Claim 4
Dependent Claim
16 words
The method according to claim 1, wherein said glass body is stretched to a desired diameter.
Claim 5
Dependent Claim
21 words
The method according to claim 1, wherein said inert gas is selected from the group consisting of nitrogen, argon and helium.
References Cited (Backward Citations)
US4383843A
Cited
DE3507498A1
Cited
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