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:
Aug. 26, 2014
Filed:
Apr. 29, 2009
Deyi Jiao, Plano, TX (US);
Per Krainer, Ludvika, SE;
Deyi Jiao, Plano, TX (US);
Per Krainer, Ludvika, SE;
Atlas Copco Rock Drills AB, Orebro, SE;
Atlas Copco Drilling Solutions LLC, Garland, TX (US);
Abstract
An arrangement in a rock drill righas an inlet valvearranged upstream from a displacement compressorthat is used for supplying an air flowto at least one flushing holein the surface of a drill bit. The rock drill rigalso has an air regulatorarranged to regulate the system pressure in the air flow pathdownstream from the compressor and a detector for detecting air flow through the at least one flushing holein the surface of the drill bit. The detector has a pressure sensor, arranged between the air regulatorand the inlet valve, for measuring the reduced system pressure.