Asymmetrical vacuum-insulated glazing unit
US11332971B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 13, 2019 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | May 13, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B80/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A vacuum insulating glazing unit has a length equal to or greater than 800 mm and a width equal to or greater than 500 mm. The unit includes first and second float annealed glass panes having thicknesses Z1 and Z2, respectively. The thickness Z2 is equal to or greater than 4 mm and equal to or greater than (λ−15 mm)/5. The thickness ratio Z1/Z2 is equal to or greater than 1.10. The unit also has a set of discrete spacers positioned between the first and second glass panes and forming an array having a pitch (λ) between 10 mm and 40 nm; a hermetically bonding seal sealing the distance between the first and second glass panes over a perimeter; and an internal volume having a vacuum pressure of less than 0.1 mbar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.