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:
Oct. 04, 2022
Filed:
Nov. 10, 2020
Applicant:
Materion Corporation, Mayfield Heights, OH (US);
Inventors:
William D. Nielsen, Jr., Kingwood, TX (US);
Diane M. Nielsen, Kingwood, TX (US);
Assignee:
Materion Corporation, Mayfield Heights, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/042 (2006.01); E21B 43/12 (2006.01);
U.S. Cl.
CPC ...
E21B 17/042 (2013.01); E21B 43/126 (2013.01);
Abstract
A coupling for joining a downhole pump to a sucker rod string is disclosed. The coupling includes a core having a first end, a central portion, and a second end. The first end and the second end each have an end surface. The first end tapers linearly inwards from the central portion to the first end surface. The second end has a rounded edge along the second end surface. The coupling is made from a spinodally-hardened copper-nickel-tin alloy and has a sliding coefficient of friction of less than 0.4 when measured against carbon steel.