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:
Dec. 09, 2025
Filed:
Dec. 04, 2024
Spm Oil & Gas Inc., Fort Worth, TX (US);
Jeffrey R. Haiderer, Fort Worth, TX (US);
Chandu Kumar, Fort Worth, TX (US);
Ralph E. Harris, Fort Worth, TX (US);
Connor Landrum, Godley, TX (US);
SPM Oil & Gas, Forth Worth, TX (US);
Abstract
A fluid end for a reciprocating pump assembly includes a fluid end body defining an access opening having access opening threads formed on an inner surface thereof and extending between an inner threaded portion and an outer threaded portion. A blunt start is formed at the outer threaded portion of the access opening threads. The fluid end also includes a retainer nut having retainer nut threads formed on an outer surface of the retainer nut. To install the retainer nut in the fluid end, a first threaded portion of the retainer nut threads is configured to engage with the access opening threads before the second threaded portion. When the retainer nut is in a fully engaged position in the access opening, a second threaded portion of the retainer nut threads is offset from the blunt start of the access opening threads to define a circumferential offset distance therebetween.