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:
Jun. 26, 2018
Filed:
May. 27, 2013
Applicant:
Korea Institute of Industrial Technology, Cheonan-si, Chungcheongnam-do, KR;
Inventors:
Jung Woo Cho, Cheonan-si, KR;
Dae Young Shin, Incheon, KR;
Jin Seok Yang, Seoul, KR;
Kyoung Il Moon, Incheon, KR;
Ki Beom Kwon, Seoul, KR;
Chang Heon Song, Anyang-si, KR;
Joo Young Oh, Daejeon, KR;
Assignee:
KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY, Cheonan-si, Chungcheongnam-Do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/36 (2006.01); E21B 10/56 (2006.01); E21B 10/43 (2006.01); E21B 10/54 (2006.01); E21B 10/46 (2006.01);
U.S. Cl.
CPC ...
E21B 10/56 (2013.01); E21B 10/36 (2013.01); E21B 10/43 (2013.01); E21B 10/46 (2013.01); E21B 10/54 (2013.01);
Abstract
A drill bit including a button array having different radii extending from the center of a head section, and more particularly, to a drill bit in which buttons are arranged so as to have different radii from the center of a drill bit head section, thereby striking bedrock points having different radii and improving the efficiency of a drilling operation.