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:
May. 15, 2012
Filed:
May. 03, 2007
Oliver Ohlendorf, Landsberg, DE;
Oliver Ohlendorf, Landsberg, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A hand-held power tool includes a work spindle ()in which a chuck () for receiving an axially displaceable, within limits, percussion working tool (), is mounted on. The work spindle () having a coaxial die () located in its interior for imparting blows to the percussion working tool (). At least one cooling air channel () extends in an outer housing () radially outwardly of the work spindle and opens into a chuck free space () which adjoins the work spindle (). The at least one cooling air channel () communicates with the interior of the work spindle through an opening () formed in the work spindle. A seal () completely flowtight seals the free space () outwardly.