Fire resistant aluminum door frame assembly
US4281481A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1980 |
| Grant date | Aug 4, 1981 |
| Priority date | — |
| Expiry date | Jan 18, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/132
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A fire resistant aluminum door frame assembly is provided which comprises a partition wall having a door opening therethrough; a header assembly; opposing jamb assemblies; a strike assembly disposed along one jamb assembly; at least one hinge assembly disposed along the opposite jamb assembly; and a door member supported within said door opening by said hinge assembly and having a lockset engaging said strike assembly; whereby upon exposure to extreme heat, the door frame assembly accommodates expansion of the header and jamb assemblies without buckling, and said strike and hinge assemblies respectively maintain said door support and lockset engagement of the door member, wherein said door frame assembly attains a fire rating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.