The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2003
Filed:
Feb. 27, 2001
Applicant:
Inventor:
Fredrik Saf, Vintrosa, SE;
Assignee:
Atlas Copco Rock Drills AB, Orebro, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 1/02 ;
U.S. Cl.
CPC ...
E21B 1/02 ;
Abstract
A rock drilling device has a feed beam ( ) and a rock drilling machine ( ) movable along the feed beam. The rock drilling machine is fed along the feed beam ( ) by a feed line ( ), which is routed over a sheave ( ) arranged at the movable end ( ) of a pressure medium cylinder ( ). A further line ( ) is arranged between two points ( ) which are fixed relative to the movable end of the pressure medium cylinder. The further line ( ) is connected to a measuring device ( ) which is fixed to the feed beam ( ) for measuring displacement of the rock drilling machine ( ) along the feed beam.