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:
Jul. 21, 2009
Filed:
May. 07, 2004
Fritz Tibussek, Mönchengladbach, DE;
Peter Heinrichs, Wegberg, DE;
Fritz Tibussek, Mönchengladbach, DE;
Peter Heinrichs, Wegberg, DE;
Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, Erkelenz, DE;
Abstract
The invention relates to a device for drilling a bore in the ground, comprising a drive system with a connecting rod assembly that extends from the drive system into the ground. The end of said assembly pointing towards the face or base of the bore is connected to a tool head (). The device also comprises several tools () that are located on the tool head () and work on the face or the base of the bore. The inventive device is characterised in that each tool () comprises an excavation disc () and elements that cause the excavation disc () to oscillate during operation.