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:
Nov. 19, 2013
Filed:
Mar. 13, 2009
Applicants:
Rainer Vollmer, Neuhausen, DE;
Marcus Schuller, Dettenhausen, DE;
Inventors:
Rainer Vollmer, Neuhausen, DE;
Marcus Schuller, Dettenhausen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 3/00 (2006.01); E21B 17/22 (2006.01); E21B 19/16 (2006.01); E21B 19/18 (2006.01); B25D 17/04 (2006.01); B27C 3/08 (2006.01); B23B 45/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A machine tool, in particular a powered hand tool, has an electric drive motor to which pole shoes are assigned in order to conduct a magnetic field. Furthermore, a fan wheel is provided in order to produce a stream of cooling air. In the housing, an air-guiding element forms a portion of the flow path for the stream of cooling air. According to the invention, the air-guiding element at least partially covers the pole shoes.