Patent · US Active

Drill rod gripping apparatus

US9745806B2 · kind B2 · utility

4Cited by

4References

14Claims

0Family size

Assignee

Sandvik Intellectual Property AB · SE

Inventors

Johan Jelgert · Lindesberg, SE
Lars E. Larsson · Köping, SE
Krister B Eriksson · Nora, SE
Ola FREDIN · Nora, SE

Key dates

Filing date	Apr 9, 2014
Grant date	Aug 29, 2017
Priority date	—
Expiry date	Apr 9, 2034

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B19/20
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A drill rod gripping apparatus to grip and impart rotational motion to a drill rod including a sled axially mounted at a frame and having first and second jaws moveably mounted at the sled to allow a substantially linear lateral movement across the sled to and from one another. A plurality of rod engagers are mounted at each jaw with at least one of the engagers including an abrasive surface formed from a coating to increase the frictional force between the drill rod and the gripping apparatus.

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