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. 05, 2025
Filed:
Jul. 15, 2022
Applicant:
Kerr Machine Co., Sulphur, OK (US);
Inventors:
Mark S. Nowell, Ardmore, OK (US);
Kelcy Jake Foster, Ardmore, OK (US);
Christopher Todd Barnett, Stratford, OK (US);
Assignee:
Kerr Machine Co., Sulphur, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 53/22 (2006.01); F04B 47/00 (2006.01); F04B 53/16 (2006.01); E21B 43/26 (2006.01); F04B 15/02 (2006.01);
U.S. Cl.
CPC ...
F04B 53/22 (2013.01); F04B 47/00 (2013.01); F04B 53/16 (2013.01); E21B 43/2607 (2020.05); F04B 15/02 (2013.01);
Abstract
A closure for a fluid end having a middle sealing section which engages a seal. The sealing section either has a larger outer diameter than adjacent sections or contacts a bore with a smaller inner diameter than adjacent sections. In either case, the clearance formed on either side of the sealing section reduces friction and allows the closure to be rocked back and forth to insert and remove the closure from the fluid end bore.