Hinge with opening occupied by an intumescent material
US5172452A · kind A · utility
8Cited by
9References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 16, 1991 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | May 16, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/134
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A hinge for use with a fire door has a blade in which there are formed a number of screw holes and a larger opening. The larger opening is filled with an intumescent material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.