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:
Apr. 07, 2020
Filed:
Jun. 20, 2017
Applicant:
Bly Ip Inc., Salt Lake City, UT (US);
Inventors:
Christopher L. Drenth, Burlington, CA;
Hongyan Zhang, Wuxi, CN;
Assignee:
BLY IP INC., Salt Lake City, UT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/02 (2006.01); E21B 25/12 (2006.01); E21B 25/00 (2006.01); E21B 25/10 (2006.01);
U.S. Cl.
CPC ...
E21B 10/02 (2013.01); E21B 25/00 (2013.01); E21B 25/10 (2013.01); E21B 25/12 (2013.01); Y10T 29/49826 (2015.01);
Abstract
A core lifter and method for making same for use in a drilling system. The core lifter can include a tubular body having an exterior surface and an interior surface and can have a plurality of longitudinally-oriented recesses formed in the exterior surface of the tubular body of the core lifter and extending radially inwardly relative to the central axis of the core lifter. The plurality of longitudinally-oriented recesses formed in the exterior surface of the tubular body of the core lifter can extend along at least 50 percent of the length of the core lifter.