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. 11, 1994
Filed:
Jun. 28, 1993
Applicant:
Inventors:
Hinrich Kattentidt, Darmstadt-Eberstadt, DE;
Magnus Mauch, Goppingen, DE;
Assignee:
DELMAT Maschinenfabrik Reihnold Dornfeld GmbH, Esslingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175 19 ; 175 21 ;
Abstract
A drilling tool (10) of the displacing type comprises a displacing head (22) including a cylindrical mid head portion (24) and lower and upper frustoconical head portions (26, 28). A lower drill portion (12) carries a helical rib (16) which also extends over the lower head portion (26), all portions of this rib being of equal height. The upper head portion (28) is formed with spiroconical displacing walls (32).
Kattentidt, Hinrich. (1994). Drilling tool of the displacing type (U.S. Patent No. 5353883). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5353883
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile