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. 05, 2014
Filed:
Dec. 12, 2011
Alexander Zürn, Altshausen, DE;
Martin Stumpp, Ravensburg, DE;
Alexander Zürn, Altshausen, DE;
Martin Stumpp, Ravensburg, DE;
DreBo Werkzeug Fabrik GmbH, Altshausen, DE;
Abstract
The invention relates to a drilling tool having a large drill, in particular a core drill, in which a center drill is guided in an axially flexible or movable manner, with the axial movement of said center drill relative to said large drill being limited by at least one limit stop, wherein at least one pin that is supported on the large drill, the shaft thereof or a transition therebetween, extends toward the center drill, and the pin () is formed at an attachment body () comprising a contact surface () that abuts on a counter contact surface () of the drilling tool () and in particular has at least partially a larger lateral extension than the pin.