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:
Mar. 27, 2007
Filed:
Apr. 03, 2006
Josef Mocivnik, Fohnsdorf, AT;
Renè Egger-mocivnik, Judenburg, AT;
Josef Mocivnik, Fohnsdorf, AT;
Renè Egger-Mocivnik, Judenburg, AT;
ALWAG Tunnelausbau Gesellschaft m.b.H., Pasching, AT;
Abstract
In a method and device for boring or drilling, in particular percussion drilling or rotary percussion drilling, holes in soil or rock, wherein a borehole is formed by a percussive and/or rotary movement carried out by a drill bit () mounted on a drill rod assembly () and a jacket tube () coupled with the drill bit () is introduced into the borehole, it is provided that the jacket tube () is received in a socket () provided on the end facing away from the drill bit working surface, of an envelope tube () coupled with the drill bit (), and that the jacket tube () is subjected to a percussive and/or compressive stress on its end facing away from the drill bit, whereby directionally precise boring or drilling is rendered feasible.