Patent · US Expired

Drill core inclinometer

US4389792A · kind A · utility

3Cited by

7References

7Claims

0Family size

Assignee

Ruhrkohle AG

Inventor

Heinz Fuchs · Homberg (Efze), DE

Key dates

Filing date	Jan 15, 1981
Grant date	Jun 28, 1983
Priority date	—
Expiry date	Jan 15, 2001

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B25/16
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A drill core inclinometer is releasably mountable in a core barrel and includes a device for measuring the vertical and transverse inclination of the drill core before the core is detached from the matrix. The device, once it has effected the measurements, is arrested so that the measurements are retained and remain unaffected while the core is brought to the surface.

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