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. 10, 2012
Filed:
Sep. 12, 2007
Göran Tuomas, Örebro, SE;
Göran Tuomas, Örebro, SE;
Atlas Copco Rock Drills AB, Orebro, SE;
Abstract
A method for producing Shockwave pulses in a tool direction (R) of a pulse machine () having a housing (), wherein an impulse piston () is arranged, wherein the impulse piston is influenced by a first force in a direction opposite to said tool direction through a first fluid pressure (Pi) in a first chamber (), and by a second force in said tool direction, wherein 'a Shockwave pulse is produced through a rapid relief of the first fluid pressure after displacement of the impulse piston () relative to the housing in a direction opposite to the tool direction, is distinguished in that the length of the shock wave is controlled by the length (L) of said displacement is regulated. The invention also concerns a device, rock drilling machine and a rock drilling rig.