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. 14, 1999
Filed:
Sep. 14, 1998
Applicant:
Inventors:
Peter Ostermeier, Diessen, DE;
Rudolf Reitberger, Munich, DE;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
408 59 ; 408124 ; 408204 ;
Abstract
An operating device for a hollow drill (1) including a housing (2), a drill receiving chuck (3) supported in the housing (2) for rotation relative thereto, a drive unit (4) for rotating the chuck (3), a bottom element adjoining the chuck (3) at a side of the chuck facing in a direction opposite to a drilling direction, and an arrangement for lifting the bottom element off the chuck (3).