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. 15, 2002
Filed:
Jan. 11, 2001
Karl Frauhammer, Leinfelden-Echterdingen, DE;
Manfred Hellbach, Leinfelden-Echterdingen, DE;
Heinz Schnerring, Dettenhausen, DE;
Karsten Blaier, Friedrichshafen/Bodensee, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The machine tool, especially a hammer drill or chisel, has a rotatable and/or axially movable tool holder ( ) for a tool ( ) having a grooved shaft. The tool holder ( ) includes a base body ( ); two radially movable locking bodies ( ) held in the base body and movable into respective locking positions engaged in two closed grooves ( ) in the tool shaft; a bearing member ( ) movable between a bearing position for holding the locking bodies ( ) in the locking position and a releasing position in which the locking bodies are movable out of the grooves; an operating member ( ) connected with the bearing member ( ) for moving the bearing member ( ) and a resilient plastic guiding member ( ) arranged to guide the locking bodies ( ) radially outward during motion from the locking to unlocking position and to act on the locking bodies ( ) with a radially inwardly directed spring force.