Fitting for penetration through fire rated barriers
US4061344A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1976 |
| Grant date | Dec 6, 1977 |
| Priority date | — |
| Expiry date | Jun 23, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/933
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Penetrations or passageways through fire rated or fire resistant walls, floors, partitions, and ceilings are frequently necessary to provide for present or future pipes, cables or conduits. A fitting placed in the penetration provides a seal to prevent the passing of fire, products of combustion, gas vapor or liquid through the penetration under normal conditions and under adverse conditions of fire or elevated temperatures. The fitting includes an elastomeric-like material, under pressure, which provides the initial barrier. An intumescent material, which responds to heat is provided to expand and fill any void created by the degeneration of the elastomeric material in response to the heat or fire. The fitting may include an outer exposed layer of intumescent material to serve as an insulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.