Unhingeable and concealed hinge for switching boxes
US4873745A · kind A · utility
20Cited by
7References
13Claims
0Family size
Inventor
Key dates
| Filing date | Jan 11, 1988 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | Jan 11, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7079
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A concealed hinge for switching boxes which is unhingeable, the hinge having a first and second hinge part. The first hinge part having a bearing eye attached to an inside of a door leaf. The second hinge part surrounds the first hinge part in the shape of a U and is connectable to a vertical frame member of the box. The second hinge part has two bearing eyes on ends of a U-shaped member. The hinge parts are connected by a bearing bolt arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.