Door hinge with knuckle cylinder having a major beveled portion
US5033161A · kind A · utility
17Cited by
11References
6Claims
0Family size
Inventor
Key dates
| Filing date | Jan 8, 1990 |
| Grant date | Jul 23, 1991 |
| Priority date | — |
| Expiry date | Jan 8, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/132
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A modification of conventional removable pin butt hinges, such as used to hang doors, simplifies removal of the hinge pin. The modification is a beveled surface portion along an upper end edge of the uppermost hinge cylinder, providing access to an exposed ledge portion of the hinge pin crown. A driver, a chisel, a screwdriver or other driving device may be positioned against the exposed portion of the hinge pin and struck, thereby easily driving the hinge pin from the hinge cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.