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:
May. 13, 2014
Filed:
Dec. 17, 2008
Fredrik Saf, Vintrosa, SE;
Fredrik Saf, Vintrosa, SE;
Atlas Copco Rock Drills AB, Orebro, SE;
Abstract
The present invention relates to a pulse generating device for inducing a shock wave in a tool, wherein the said pulse generating device comprises an impact means () for transferring energy to a drill string () connected to the said tool, and wherein the energy transfer gives rise to the said shock wave, in which the said energy is mainly constituted by elastic energy stored in the impact means () and/or an energy store. The device comprises control means for controlling the interaction of the impact means () with the drill string (), wherein the said control means for controlling the interaction of the impact means () with the drill string () comprises a motor (), and wherein the said motor () is designed to, through rotation, alternately open ducts for pressurization and depressurization of at least one drive surface () acting upon the said impact means. The invention is characterized in that the rotation axis of the said motor () is arranged substantially coaxially with the drill string ().