Muffle gap seal for glass laminate machine

Patent metadata

Field	Value
Publication number	US-9701560-B2
Application number	US-201414446798-A
Country	US
Kind code	B2
Filing date	Jul 30, 2014
Priority date	Aug 1, 2012
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

A flexible seal positioned between two muffles of a glass laminate fusion draw machine comprises, in order from the interior to the exterior of the muffles, a radiation shield comprising overlapping rows of refractory material, a thermal seal comprising a blanket of temperature resistance material, and an air seal comprising a sheet of high temperature elastomeric material. The seal may further comprising a secondary radiation shield positioned between the thermal seal and the air seal.

First claim

What is claimed is:

1. A flexible seal assembly comprising:
a radiation shield;
a thermal seal; and
an air seal,
wherein the radiation shield comprises overlapping, mutually non-contacting rows of refractory material, the thermal seal comprises a blanket of temperature resistant material, and the air seal comprises a sheet of high temperature elastomeric material, and further comprising a secondary radiation shield positioned between the thermal seal and the air seal.

2. The seal according to claim 1 wherein the secondary radiation shield comprises a flexible metal sheet having folds therein.

3. The seal according to claim 1 wherein the high temperature elastic material comprises silicone.

4. The seal according to claim 1 wherein the blanket of temperature resistant material comprises a refractory fiber material encapsulated in a fabric formed of a refractory material.

5. The seal according to claim 4 wherein the fabric is an alumina silicate fabric.

6. A system useful for a laminate fusion draw machine comprising:
an upper muffle;
a lower muffle;
a seal assembly according to claim 1 .

Assignees

• Corning Inc

Inventors

• Brown-Tsai Jufe Adam
• Coppola Frank
• Le Gallic Bruno
• Golyatin Vladislav Yuryevich
• Polius Shaan Leslian Yeershen

Classifications

• C03B17/064 Primary

  by the overflow downdraw fusion process; Isopipes therefor · CPC title

• F16J15/022

  characterised by structure or material · CPC title

• F16J15/002

  comprising at least two sealings in succession (F16J15/162, F16J15/40 take precedence) · CPC title