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:
Jul. 16, 2013
Filed:
Dec. 17, 2007
Heinz-werner Faatz, Schmitten, DE;
Thomas Stanke, Idstein, DE;
Ernst Staas, Limburg, DE;
Rosie Wache, Wiesbaden, DE;
Heinz-Werner Faatz, Schmitten, DE;
Thomas Stanke, Idstein, DE;
Ernst Staas, Limburg, DE;
Robert Wache, Wiesbaden, DE;
Black & Decker Inc., Newark, DE (US);
Abstract
A method of assembling a hand held electrically powered drilling and/or hammering tool having a tool housing and a drilling and/or hammering spindle mounted within the housing. The spindle has a forward end at which a tool or bit may be mounted. The method of assembly includes the steps of making a motor sub-assembly including a motor and a radial fan, the fan has a plurality of blades located on one side of the fan and non-rotatably mounting the fan on an end of the armature shaft of the motor at a first end of the motor with the blades facing away from the armature of the motor. The method further including balancing the motor sub-assembly, and mounting the sub-assembly within the housing, with the longitudinal axis of the motor armature shaft at an angle, preferably perpendicular to the longitudinal axis of the spindle and with the first end of the motor closest to the spindle axis. Thus, in use of the tool, the fan rotates at the first end of the motor to draw air into its inlet via air inlets in the housing and so as to push air through the motor and out of air outlets in the housing in the region of the second end of the motor which is remote from the spindle axis. A drilling and/or hammering tool made according to the method is also described.