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:
Aug. 13, 2002
Filed:
Feb. 15, 2001
Josef Mocivnik, Fohnsdorf, AT;
Karl Bohm, Ansfelden, AT;
Other;
Abstract
The invention relates to a device ( ) for the drilling, notably by percussion or rotary-percussion drilling, and draining of holes in soil or rock. A drill bit ( ) mounted on a drill rod ( ) creates a bore hole and a jacket tube ( ) is coupled to the drill rod ( ) or the drill bit ( ). In the area adjacent to the drill bit ( ) the jacket tube ( ) has at least one through hole which opens into an annular space embodied between the drill rod and the jacket tube. In the end area adjacent to the drill bit ( ) the jacket tube ( ) is surrounded by at least one filter tube ( ) having a plurality of through holes or slits ( ) which are distributed especially evenly across its circumference. This allows for correspondingly safe and reliable drainage during boring, using simple measures.