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. 08, 2003
Filed:
May. 05, 2000
Reinhard Riedl, Finning, DE;
Manfred Ludwig, Landsberg, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
An electrically driven hand-held tool including a housing ( ), an electromotor ( ), a gear set for transmitting rotation of an output shaft of the electromotor to a drive spindle, and a fan-wheel all arranged in the housing ( ), with the fan-wheel providing, during operation of the tool, for aspiration of air through the suction openings ( ) formed in the housing for directing the aspirated air past the electromotor and the gear set for cooling same, and for expelling warm air, which was heated as a result of absorbing heat generated by the electromotor and the gear set during the operation of the tool, out of the housing ( ), and a warm air channel ( ) arranged downstream of the electromotor and the gear set and spaced from a tool handle ( ) and having a plurality of blow-out openings ( ) arranged in such a way that during use of the hand-held tool, the expelled warm air flows in a direction away from the tool operator.