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:
Sep. 21, 1999
Filed:
Aug. 21, 1997
Applicant:
Inventors:
Manfred Buck, Nuertingen, DE;
Siegfried Fehrle, Leinfelden-Echterdingen, DE;
Bernd Koelle, Muelacker, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B / ; B23B / ; B23C / ;
U.S. Cl.
CPC ...
279 20 ; 279 75 ; 279 82 ; 279905 ; 408 57 ; 409136 ; 409234 ;
Abstract
A tool holder and an associated tool with the shank are provided for a drilling and/or striking machine tool. The tool holder has a drive spindle with a receiving opening provided with a cone for centering and a portion for driving the tool. Dumbbell-shaped locking elements are guided with their inner ends in a passage and with their outer ends in a longitudinal groove. The outer ends engage in pockets in an axially displacable locking sleeve which is prestressed by a spring in the direction toward its locking position.