Conduit apparatus
US3965629A · kind A · utility
16Cited by
9References
8Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Sep 11, 1974 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Sep 11, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G3/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Conduit apparatus providing a fire resistant passageway, for an elongate member such as wire, through a hole in a barrier such as a floor, wall or the like may comprise: a tubular core member through the interior of which the elongate member may pass; friction surfaces surrounding the exterior of the core member for frictional and sealing engagement with the barrier hole; and a seal member engageable with the interior of the core member and the exterior of the elongate member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.