Subsurface signal transmitting apparatus
US7093680B2 · kind B2 · utility
2Cited by
54References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2003 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Dec 23, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An insulator for a subsurface signal transmitting apparatus. The insulator includes a housing, a mandrel axially disposed inside the housing, a first insulating material disposed between the housing and the mandrel, a first sleeve formed of a second insulating material disposed between the housing and a first tubular member and the first tubular member coupled to the mandrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.