US 12,404,931 B2
Dual ring stuffing box
Kyle Matthew Ellisor, Katy, TX (US); Chance Ray Mullins, Spring, TX (US); Steven Zachary Newberg, Houston, TX (US); and Akhil Alex, Houston, TX (US)
Assigned to Vulcan Industrial Holdings, LLC, Houston, TX (US)
Filed by Vulcan Industrial Holdings, LLC, Houston, TX (US)
Filed on Jul. 17, 2024, as Appl. No. 18/775,355.
Application 18/775,355 is a continuation of application No. 17/864,873, filed on Jul. 14, 2022, granted, now 12,055,221.
Application 17/864,873 is a continuation in part of application No. 17/213,854, filed on Mar. 26, 2021, granted, now 11,391,374, issued on Jul. 19, 2022.
Application 17/213,854 is a continuation in part of application No. 29/769,314, filed on Feb. 4, 2021, granted, now D933104, issued on Oct. 12, 2021.
Application 17/213,854 is a continuation in part of application No. 29/769,318, filed on Feb. 4, 2021, granted, now D933105, issued on Oct. 12, 2021.
Claims priority of provisional application 63/137,501, filed on Jan. 14, 2021.
Prior Publication US 2024/0369139 A1, Nov. 7, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F16J 15/18 (2006.01); E21B 43/26 (2006.01)
CPC F16J 15/18 (2013.01) [E21B 43/2607 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A fluid end comprising:
a fluid end body having a base;
a fluid end bore positioned in the fluid end body and having a fluid end bore diameter;
a pressure ring extending from the base and having a pressure ring bore, the pressure ring bore having a pressure ring bore diameter larger than the fluid end bore diameter;
an adjacent ring connected to the fluid end, the pressure ring positioned between the adjacent ring and the base, the adjacent ring including an aperture;
one or more fasteners extending through the aperture of the adjacent ring to connect the adjacent ring to the fluid end, the one or more fasteners extending through the pressure ring and into the base; and
packing material positioned within at least a portion of the pressure ring bore, so that axial movement toward the fluid end is inhibited by the base.