Corner key for window spacer element
US4513546A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1980 |
| Grant date | Apr 30, 1985 |
| Priority date | — |
| Expiry date | Mar 12, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B3/667
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A corner key device is shown for use in a glass thermal pane structure assembly, the key device is used with longitudinally extending spacer means that may be formed into a rectangular spacing frame to hold the several sheets of glass forming the pane separated. The corner key means is made in the shape of a straight channel adapted to be telescopically interfitted with the spacer means and this straight lineup of channel shaped corner and spacer elements may then be coated on the outside of their walls with a layer of a hot melt sealant. Then the corner key devices are then bent at right angles to produce the rectangular frame adapted to engage the glass sheets around their perimeter to produce a seal between the glass sheets and spacer means and bind them together to form the finished thermal pane. The corner key is initially formed as a straight channel element having notched side walls at about its midpoint so that after the spacers, keys and sealant are assembled and the keys are bent, the sealant applied to the sides of the assembled channel elements will flow together at the corners to complete a closed circle of sealant around both sides of the entire frame for sealing agai…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.