Propulsion process of buried pipe
US5169264A · kind A · utility
67Cited by
9References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 26, 1992 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | May 26, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a propulsion process of buried pipe, an endless pipe to be buried is formed by sequentially curving a pipe material of long hoop shape made of a plastic material, and this endless pipe is successively inserted and propelled into the burying hole while forming the burying hole by propelling a leader in the ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.