Security door assembly
US5214878A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1992 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Jan 23, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/146
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A security door assembly comprising a panel having inner and outer faces, a shallow peripherally extending sidewall having an inwardly turned rim, extending substantially parallel to the inner and outer faces of the panel, mounting means, comprising at least two first mounting members, and at least two second mounting members, the first and second mounting members being interconnected e.g. by bolts so that an entrance surround of a building can be clamped between the first and second mounting members, the second mounting members having, adjacent one end, a support bracket of generally U-shaped configuration, with the web of the U being positioned to extend parallel to the inner face of the door when the door is in the closed position and the arms of U extending vertically, the first arm of the U being secured adjacent one end of said second mounting member, and the second arm being disposed outwardly of the first arm, a hinge having first and second hinge plates, the first hinge plate being secured to the second arm of the U and the second hinge plate being secured to a vertical portion of an inwardly turned rim of the panel and a lock and catch arrangement cooperatingly mounted on…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.