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Title: Laser sealed vacuum insulation window

Abstract

A laser sealed evacuated window panel is comprised of two glass panes held spaced apart in relation to each other by a plurality of spherical glass beads and glass welded around the edges to provide an evacuated space between the glass panes that is completely glass sealed from the exterior. The glass welded edge seal is obtained by welding the edges of the glass panes together with a laser beam while the glass panes and bead spacers are positioned in a vacuum furnace and heated to the annealing point of the glass to avoid stress fracture in the area of the glass weld. The laser welding in the furnace can be directed around the perimeter of the glass panel by a combination of rotating the glass panel and linearly translating or aiming the laser with a relay mirror.

Inventors:
 [1];  [1]
  1. Golden, CO
Publication Date:
Research Org.:
Midwest Research Institute, Kansas City, MO (United States)
OSTI Identifier:
866323
Patent Number(s):
US 4683154
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
laser; sealed; vacuum; insulation; window; evacuated; panel; comprised; glass; panes; held; spaced; apart; relation; plurality; spherical; beads; welded; edges; provide; space; completely; exterior; edge; seal; obtained; welding; beam; bead; spacers; positioned; furnace; heated; annealing; avoid; stress; fracture; weld; directed; perimeter; combination; rotating; linearly; translating; aiming; relay; mirror; glass beads; edge seal; vacuum furnace; laser welding; vacuum insulation; laser beam; spaced apart; laser weld; sealed vacuum; spherical glass; panes held; evacuated space; laser sealed; /428/52/156/

Citation Formats

Benson, David K, and Tracy, C Edwin. Laser sealed vacuum insulation window. United States: N. p., 1987. Web.
Benson, David K, & Tracy, C Edwin. Laser sealed vacuum insulation window. United States.
Benson, David K, and Tracy, C Edwin. Thu . "Laser sealed vacuum insulation window". United States. https://www.osti.gov/servlets/purl/866323.
@article{osti_866323,
title = {Laser sealed vacuum insulation window},
author = {Benson, David K and Tracy, C Edwin},
abstractNote = {A laser sealed evacuated window panel is comprised of two glass panes held spaced apart in relation to each other by a plurality of spherical glass beads and glass welded around the edges to provide an evacuated space between the glass panes that is completely glass sealed from the exterior. The glass welded edge seal is obtained by welding the edges of the glass panes together with a laser beam while the glass panes and bead spacers are positioned in a vacuum furnace and heated to the annealing point of the glass to avoid stress fracture in the area of the glass weld. The laser welding in the furnace can be directed around the perimeter of the glass panel by a combination of rotating the glass panel and linearly translating or aiming the laser with a relay mirror.},
doi = {},
url = {https://www.osti.gov/biblio/866323}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Patent:

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