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:
Apr. 08, 2003
Filed:
Oct. 25, 2000
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A drilling and/or chiseling tool ( ) comprises a shaft ( ) and a cylindrical insertion end ( ) connected with the shaft ( ) with at least one elongated recess ( to ), open toward the outer surface of and toward the free end of the insertion end ( ) and forming a rotationally locking groove. A collar ( ) is disposed between the shaft ( ) and the insertion end ( ) and extends at least partially around the tool ( ) and projects at least radially outwardly of the shaft ( ) and of the insertion end ( ). The cylindrical insertion end ( )has a diameter not less than mm and preferably larger than mm. The at least one recess ( to ) has a cross-sectional area, extending perpendicularly to the axis of the tool ( ), and expands toward the outer surface and is provided essentially in the form of an arc of a circle. A tool chuck of a drilling and/or chiseling device, matched to the insertion end, is provided to receive the insertion end ( ) of the tool ( ) and fit rotationally locking bodies into the at least one elongated recess ( to ).