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:
Sep. 08, 2020
Filed:
Feb. 26, 2016
Applicant:
Dreco Energy Services Ulc, Edmonton, Alberta, CA;
Inventors:
Masoud Kalantari, Calgary, CA;
Nicholas Ryan Marchand, Edmonton, CA;
Assignee:
Dreco Energy Services ULC, Edmonton, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16B 33/02 (2006.01); E21B 17/042 (2006.01);
U.S. Cl.
CPC ...
F16B 33/02 (2013.01); E21B 17/042 (2013.01);
Abstract
A thread profile for rotary shouldered threaded connections uses different thread root radii for the pin thread and the box thread in order to optimize stress distribution and maximize thread contact area. The thread profile may be adapted for use in double-shouldered, two-start, taper-threaded connections to replace currently-used threaded connections such as the rotor-to-adapter connection in a downhole motor. The thread profile may incorporate an undercut buttress design.