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:
Sep. 26, 2006
Filed:
Nov. 30, 2001
Applicant:
Franz-josef Puttmann, Lennestadt, DE;
Inventor:
Franz-Josef Puttmann, Lennestadt, DE;
Assignee:
Tracto-Technik GmbH, , DE;
Primary Examiner:
Int. Cl.
CPC ...
E21B 21/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for horizontal ground drilling, in particular for rock drilling, by means of a ground drilling apparatus which can be driven forward in rotation and percussively, the apparatus having compressed air and drilling medium applied to it alternately or simultaneously, and the compressed air and the drilling medium being supplied via one channel.