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:
Apr. 02, 2013
Filed:
May. 26, 2011
Frank Despineux, Friedrichshafen, DE;
Oliver Ohlendorf, Landsberg, DE;
Frank Despineux, Friedrichshafen, DE;
Oliver Ohlendorf, Landsberg, DE;
Hilti Aktiengesellschaft, Liechtenstein, LI;
Abstract
A dust extraction device for a machine hand tool is provided. The dust extraction device includes an outer tube arranged about an axis, the outer tube being closed on the first axial end thereof by a wall. An opening is provided for a pump connection, the opening being arranged in a position neighboring the wall in a shell wall of the outer tube. An attachment feature is provided having a sheath-like shape and arranged on the side of the wall which lies opposite the outer tube in an axial extension of the outer tube. An inner tube is arranged inside the outer tube about the axis, and penetrates the wall. A length of the inner tube inside the outer tube is at least half of the length of the outer tube.