Sonde housing
US6644421B1 · kind B1 · utility
25Cited by
21References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 26, 2001 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Jan 18, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/13
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sonde housing construction that is cost effective to manufacture, has a prolonged service life and has an internal cartridge that has replaceable parts and that can be entirely replaced. The cartridge which in service contains and protects a radio transmitter also serves to protect a main shell body from abrasion by drilling/cooling fluid while sealing radio wave apertures formed in the shell body. The cartridge creates an annular flow path for drilling/cooling fluid that ensures complete cooling protection of the transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.