Imlochbohrmaschine und Verfahren zum Bohren von Gestein

Details

Veröffentlichungs-Nr.

EP3409878

Aktenzeichen

EP17174124

Anmeldetag

2. Juni 2017

Veröffentlichung

18. August 2021

Erteilung

18. August 2021

Rechtsraum

EP

IPC

E21B4/14

Abstract

A down the hole rock drilling machine and a method of drilling rock. The drilling machine comprises a casing (15) inside which is a control sleeve (20). A reciprocating piston (19) is arranged to move inside the control sleeve and control feeding and discharging of working chambers (20, 21). Between the control sleeve and an inner surface of the casing are all the fluid passages (28, 29, 30, 31) needed for fluid routing. The piston opens and closes transverse openings and controls the work cycle.

Anmelder

Firma

Sandvik Intellectual Property AB

Land

🇸🇪 Schweden

Fachgebiete