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. 25, 2015
Filed:
Feb. 21, 2011
Applicants:
Ki-ho Kim, Gyunggi-do, KR;
Sung-hoon Chung, Irvine, CA (US);
Inventors:
Ki-Ho Kim, Gyunggi-do, KR;
Sung-Hoon Chung, Irvine, CA (US);
Assignee:
EHWA DIAMOND INDUSTRIAL CO., LTD., Gyunggi-Do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 10/26 (2006.01); E21B 10/02 (2006.01); E21B 10/60 (2006.01);
U.S. Cl.
CPC ...
E21B 10/26 (2013.01); E21B 10/02 (2013.01); E21B 10/60 (2013.01);
Abstract
A reaming shell for mining is provided. The reaming shell has a shank, and a plurality of pads attached at circumferential intervals from each other to extend lengthwise on an outer periphery of the shank. The reaming shell is coupled to a core bit of a diamond drilling tool for mining. The reaming shell includes a water groove of a recessed shape formed respectively between each adjacent pair of the pads, and extending from a leading edge along a length of the shank.