Pre-finished metal door frame
US5619823A · kind A · utility
38Cited by
14References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Jul 11, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/477
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A metallic frame and, more particularly, a stainless steel door frame has a bent sheet metal frame element encompassing an inner space and the element has backbends which extend perpendicularly inward from the back ends of faces of the element. At least one slidably insertable sleeve is disposed inside the element and has flanges which are spot welded to the back ends. The sleeves serve as carriers for various door hardware such as hinge reinforcement and strike plates, clips having bendable tabs, and anchors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.