Coupling pipe part for interconnecting corrugated pipe parts
US4441745A · kind A · utility
32Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1983 |
| Grant date | Apr 10, 1984 |
| Priority date | — |
| Expiry date | Sep 20, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/921
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic coupling pipe part for connecting corrugated plastic pipe comprises abutment projections and a radially resilient displaceable lip, carrying an inwardly directed cam. The lip is surrounded by openings delimited by a rectangular incision in the plastic pipe. The transition part connecting the lip with the pipe wall has a smaller width than the end edge of the lip. In a pipe connection with such a coupling pipe part the coupling cam engages a flank of a wave valley of a corrugated pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.