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:
Oct. 09, 2012
Filed:
Sep. 25, 2006
Achim Duesselberg, Hangzhou, CN;
Andre Ullrich, Filderstadt-Bernhausen, DE;
Helmut Heinzelmann, Stuttgart, DE;
Thomas Bernhardt, Aichtal-Hroetzingen, DE;
Michael Weiss, Stuttgart, DE;
Tobias Herr, Stuttgart, DE;
Achim Duesselberg, Hangzhou, CN;
Andre Ullrich, Filderstadt-Bernhausen, DE;
Helmut Heinzelmann, Stuttgart, DE;
Thomas Bernhardt, Aichtal-Hroetzingen, DE;
Michael Weiss, Stuttgart, DE;
Tobias Herr, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A drill hammer for the three operation modes of drilling, chiseling, and hammer-drilling has a motor with a motor shaft; a gear with an intermediate shaft, a driving gear wheel, a toothed slaving shaft , a shifting hub, and a driven gear wheel; a percussion mechanism with a wobble disk and a wobble gear wheel; and a driven shaft with a driving gear wheel and a drill chuck. The gear is configured to be changed over easily without axial displacement of running gears that mesh with one another so that the drill hammer is more robust, shorter or more compact, and lighter in weight. The drill hammer is thus simply and economically constructed and whose efficiency is not impaired by the gear shifting mechanism.