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:
Dec. 09, 2014
Filed:
Jun. 28, 2010
Deyi Jiao, Plano, TX (US);
Eugene Cheng, Plano, TX (US);
Jonas Sinnerstad, Örebro, SE;
Hans Gustavsson, Örebro, SE;
Deyi Jiao, Plano, TX (US);
Eugene Cheng, Plano, TX (US);
Jonas Sinnerstad, Örebro, SE;
Hans Gustavsson, Örebro, SE;
Atlas Copco Rock Drills AB, Orebro, SE;
Atlas Copco Drilling Solutions LLC, Garland, TX (US);
Abstract
A hydraulic fluid control system for controlling pressure fluid supplied to consumers () of a rock drilling machine, a regulating valve () for each for each consumer and fluid conduits between the regulating valves and the consumers, an electronically controlled auxiliary control unit () having an electrically controlled auxiliary valve () for connection to a fluid conduit, a sensor for sensing fluid parameter values and sending sensor signals to the auxiliary control unit as sensor input signal actual values, micro-controller () having at least one parameter sensor input signal entry (S-S, I-I) for receiving the sensor input signal actual values and a control signal exit (V-V) for signal control of an auxiliary valve, the processor () is being arranged to compare the actual and predetermined values and to emit control signals to an auxiliary valve in response to the comparison to adjust fluid flow.