Reinforcing support for plastic pipe
US6851454B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 2003 |
| Grant date | Feb 8, 2005 |
| Priority date | — |
| Expiry date | Feb 10, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S220/902
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The combination of a flexible pipe, e.g. plastic, and a reinforcing member mounted around the pipe to strengthen the pipe and to enhance its ability to resist deformation under load. In one embodiment the reinforcing member includes a flexible perforated plastic netting containing an aggregation of lightweight elements such as expanded polystyrene beads capable of wrapping around the pipe, preferably in helical fashion along the length of the pipe. In another embodiment, a number of members are mounted on the pipe in longitudinally extending fashion. In all embodiments, the beads provide drainage around the pipe when it is placed in a trench and obviate the need for gravel normally used in conventional systems. In another form of the invention, a drainage system is constructed by digging a trench, placing a reinforcing aggregate member in the corners at the bottom of the trench, and setting a large diameter cylindrical pipe in the trench. The aggregate members generally conform to and almost fill the open areas around the bottom of the pipe to support the pipe and prevent deformation thereof under load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.