Structure for steel door
US8136326B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 9, 2008 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Sep 4, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2003/346
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to an improved structure for a steel door which comprises a steel door frame and a steel door panel which is hinged on one side of the steel door frame, wherein the steel door panel comprises a steel-made door panel frame and a door opening defined by the door panel frame, the door opening has an interior portion which is disposed with a plurality of steel guarding members forming graphics, portions other than the guarding members in the door opening form hollowed units; a rear side of the door panel frame is disposed with a glass door panel which corresponds with the door opening, the glass door panel comprises a steel-made glass door panel frame which surrounds a peripheral body of the door opening and is formed on the rear side of the door panel frame, and a glass which is embedded in the glass door panel frame, one side of the glass door panel frame is hinged on one side of the door panel frame, the glass door panel frame is completely hidden behind the rear side of the door panel frame. The structure enables the entire content of the graphics formed by the plurality of members viewable from either the front side or the rear side of the steel door,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.