Asymmetrical vacuum-insulated gazing unit
US11174669B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 23, 2019 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Jan 23, 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 includes a first glass pane having a thickness Z1, and a second glass pane made of prestressed glass having a thickness, Z2, where Z1 is greater than Z2 (Z1>Z2) The glazing unit also includes a set of discrete spacers positioned between the first and second glass panes and a hermetically bonding seal sealing the distance between the first and second glass panes over a perimeter. A vacuum of pressure less than 0.1 mbar is created in an internal volume V. A thickness ratio, Z1/Z2, of the thickness of the first glass pane, Z1, to the thickness of the second glass pane, Z2, is equal to or greater than 1.30 (Z1/Z2≥1.30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.