Sizable back-up shear plate for metal frame windows
US6438911B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Apr 10, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B1/6015
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The sizable plastic back-up shear plate is laterally disposed with generally a spring fit into the outwardly facing mouth of a metal window frame. For windows having smaller mouths, the shear plate is cut along a discardable edge portion. The outwardly facing mouth is formed and defined by the window frame elongated hollow body and particularly by outer wall elements which face each other in an opposing manner. The plastic back-up shear plate has laterally disposed opposite outer edge portions which are interlockable on corresponding outer wall elements of hollow body metal window frame which wall elements define the mouth of the window frame. An intermediately disposed locking lip is utilized on smaller frame mouth after cutting or separating off the bread away edge portion. The plastic back-up shear plate has a lateral dimension slightly larger than the lateral mouth dimension and thereby achieves a spring fit. In one embodiment, the plastic back-up shear plate includes support ribs on its inner base plate face. In another embodiment or a further enhancement of the invention, the outer base face of the plastic back-up shear plate includes at least one, and preferably two, shim el…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.