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:
Feb. 14, 2023
Filed:
Feb. 03, 2021
Applicant:
Hilti Aktiengesellschaft, Schaan, LI;
Inventors:
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 10/44 (2006.01); B28D 1/14 (2006.01); B23B 51/02 (2006.01); B23P 15/32 (2006.01); B21K 5/04 (2006.01); B21D 11/14 (2006.01); B21H 7/18 (2006.01);
U.S. Cl.
CPC ...
B28D 1/146 (2013.01); B21K 5/04 (2013.01); B23B 51/02 (2013.01); B23P 15/32 (2013.01); E21B 10/445 (2013.01); B21D 11/14 (2013.01); B21H 7/187 (2013.01); B23B 2226/75 (2013.01); B23B 2251/046 (2013.01);
Abstract
A drill bit includes a drill bit head, a multi-strand helix made up of three or more helix ribs, and a shank end along a drill bit axis. The multi-strand helix is made up of a conveyance area, a helix gradient, and a pitch. The helix ribs extend parallel to the drill bit axis in a first area adjacent to the drill bit head and a second area adjacent to the shank end.