Tapping subterranean pipes
US4832069A · kind A · utility
22Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1987 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Jan 29, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/561
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Subterranean service pipes, eg. water mains, are tapped by minimal excavation to expose the upper half of the main and then locating (with respect to the main) a conventional pipe-tapping device but without employing means encircling the pipe. Thus, a clamp can be used, or a saddle adhesively secured to the pipe. The clamp or saddle preferably provide means for proper orientation of the drilling and tapping tool with respect to the main.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.