Pipe connection for ventilating duct system
US6431609B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Mar 23, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L21/035
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipe connection for use in a ventilating duct system having ducts with circular cross-section is adapted to be inserted with a close fit into an outer pipe and be connected therewith. The pipe connection has a circumferential groove, in which a circumferential seal sealing against the inside of the outer pipe is arranged. A terminal edge portion of the pipe connection comprises an outer conical portion which has a diameter decreasing towards the end of the pipe connection, and a circumferential guide surface having such a diameter that said close fit is obtained. The axial length (L3) of the terminal edge portion constitutes about 1.5-5.5% of the diameter of the guide surface. The outer conical portion at its end has a diameter which constitutes about 97-99.9% of the diameter of the guide surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.