Patent · US Expired

Probe for locating mineral deposits

US4580049A · kind A · utility

2Cited by

5References

6Claims

0Family size

Assignee

Preussag Aktiengesellschaft

Inventors

Klaus Janssen · Essen, DE
Helmut Winnacker
Klaus Johnen · Gehrden, DE

Key dates

Filing date	Apr 10, 1984
Grant date	Apr 1, 1986
Priority date	—
Expiry date	Apr 10, 2004

Classification

Technology area (CPC G)Physics
CPC primaryG01V5/12
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A cylindrical probe for insertion into a drill hole for detecting the presence of mineral deposits. A source of radioactive irradiation and a detector are mounted concentrically within the housing of the probe, the detector being shielded from direct radiation by a wall having an upper conical surface which directs fluorescent radiation reflected from the wall of the drill hole to the detector. A disc-shaped slot concentrates the rays from the radioactive source on an area of the drill hole wall which is in the shape of a ring surrounding the probe. The concentration and close proximity of the radiation source and the detector permit precise scanning and analyzing, simply, cheaply and quickly.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.