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. 27, 2010
Filed:
Dec. 29, 2005
Klaus-dieter Arich, Huenstetten-Beuerbach, DE;
Erhard Benner, Hellenhahn, DE;
Manfred Droste, Limburg-Offheim, DE;
Uwe Nemetz, Hünfelden Nauheim, DE;
Martin Soika, Idstein, DE;
Michael Kunz, Dorndorf, DE;
Klaus-Dieter Arich, Huenstetten-Beuerbach, DE;
Erhard Benner, Hellenhahn, DE;
Manfred Droste, Limburg-Offheim, DE;
Uwe Nemetz, Hünfelden Nauheim, DE;
Martin Soika, Idstein, DE;
Michael Kunz, Dorndorf, DE;
Black & Decker Inc., Newark, DE (US);
Abstract
A power tool cooling system comprises a cooling fan disposed on a motor in a position between the upper field coil and the lower commutator. A transmission housing encapsulates the transmission mechanism. During operation, the fan is driven by the motor and draws air axially through the motor and expels the air radially outwardly through holes in the outer housing of the motor. This causes air to be drawn in through the air vents formed on the top of a tool housing, in the side of the housing and between the housing and a battery pack. The cool air flows outside of the transmission housing, but inside the tool housing such that air does not pass through the transmission mechanism. A plurality of motor openings are also formed in the outer housing of the motor to enable cool air to pass into the motor to cool the motor.