Intumescent interlocking collar
US6029412A · kind A · utility
33Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1997 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Feb 12, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1819
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An interlocking intumescent collar is disclosed. The collar may be fitted around a pipe at the point where the pipe penetrates a wall or floor. The collar comprises a strip of intumescent material disposed on a collar body. Anchor tabs extend outward from the collar body and are adapted to be fastened to the wall or floor. The collar includes an interlock integral with the anchor tabs. The interlock holds the tabs in overlapping relationship when the collar is placed around a pipe. The interlock integral with the anchor tabs decreases manufacturing costs and facilitates the field installation of the collar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.