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:
Aug. 12, 1997
Filed:
Oct. 18, 1995
Applicant:
Inventors:
Assignee:
Hilti Aktiengesellschaft, Furstentum, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B28D / ;
U.S. Cl.
CPC ...
175403 ; 299107 ;
Abstract
A drill bit is formed of an insertion end part (1) and carrier part (2) containing drilling cutter members (8). The insertion end part (1) and the carrier part (2) are joined together by a threaded connection. The two parts are secured by a radially flexible spring washer (7) for preventing an unintended detachment of the two parts.