Sleeve for glass tube molding, and method for assembling sleeve for glass tube molding
US-11014844-B2 · May 25, 2021 · US
Sleeve for glass tube molding
US11618706B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11618706-B2 |
| Application number | US-201616060232-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 14, 2016 |
| Priority date | Dec 10, 2015 |
| Publication date | Apr 4, 2023 |
| Grant date | Apr 4, 2023 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
Provided is a sleeve for glass tube molding capable of suppressing generation of foreign matter such as rust from a sleeve shaft and suppressing adhesion of foreign matter such as rust to the molten glass without degrading mechanical strength of the sleeve shaft. A sleeve for glass tube molding includes a sleeve shaft including a through-hole and a refractory cylindrical body inserted coaxially with the sleeve shaft around the sleeve shaft. A superior rust-resistant material having rust resistance superior to that of the sleeve shaft is provided to cover a part or whole of an inner surface of the through-hole of the sleeve shaft and to cover a tip of the sleeve shaft.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sleeve for glass tube molding comprising: a sleeve shaft including a through-hole; a refractory cylindrical body inserted coaxially with the sleeve shaft around the sleeve shaft; a pipe member including a superior rust-resistant material having rust resistance superior to that of the sleeve shaft, covering a part or whole of an inner surface of the through-hole of the sleeve shaft, and including a flange at one end covering a tip of the sleeve shaft; and a glass seal including a glass material, interposed between a tip surface of the sleeve shaft and the flange of the pipe member, directly contacting the tip surface and the flange, and further protruding outward than the flange in a radial direction of the flange. 2. The sleeve for glass tube molding according to claim 1 , the flange covers the tip of the sleeve shaft while the part or whole of the inner surface of the through-hole of the sleeve shaft is covered by inserting the pipe member into the through-hole of the sleeve shaft. 3. The sleeve for glass tube molding according to claim 2 , wherein an outer diameter of the flange is larger than an outer diameter of the tip of the sleeve shaft. 4. The sleeve for glass tube molding according to claim 1 , wherein an outer diameter of the flange is larger than an outer diameter of the tip of the sleeve shaft.
Assignees
Inventors
Classifications
- C03B17/04Primary
Forming tubes or rods by drawing from stationary or rotating tools or from forming nozzles · CPC title
Tubes or rods · CPC title
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Frequently asked questions
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- What does patent US11618706B2 cover?
- Provided is a sleeve for glass tube molding capable of suppressing generation of foreign matter such as rust from a sleeve shaft and suppressing adhesion of foreign matter such as rust to the molten glass without degrading mechanical strength of the sleeve shaft. A sleeve for glass tube molding includes a sleeve shaft including a through-hole and a refractory cylindrical body inserted coaxially…
- Who is the assignee on this patent?
- Nippon Electric Glass Co
- What technology area does this patent fall under?
- Primary CPC classification C03B17/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 04 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).