Free flow low energy pipe protector
US5542454A · kind A · utility
19Cited by
36References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1994 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Apr 8, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pipe protector has been designed to provide free flow and low energy. The outside surface has a bilateral asymmetrical pattern when comparing the approximate top half of the pipe protector to the bottom half of the pipe protector. The pattern has raised figures surrounded by communicating channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.