US 11,655,812 B2
Fluid end assembly
Kelcy Jake Foster, Ardmore, OK (US); Mark S. Nowell, Ardmore, OK (US); Brandon Scott Ayres, Ardmore, OK (US); and Christopher Todd Barnett, Stratford, OK (US)
Assigned to Kerr Machine Co., Sulphur, OK (US)
Filed by Kerr Machine Co., Sulphur, OK (US)
Filed on Aug. 5, 2022, as Appl. No. 17/882,267.
Application 17/882,267 is a continuation of application No. 16/876,414, filed on May 18, 2020, granted, now 11,408,419, issued on Aug. 9, 2022.
Application 16/876,414 is a continuation of application No. 16/035,126, filed on Jul. 13, 2018, granted, now 10,670,013, issued on Jun. 2, 2020.
Claims priority of provisional application 62/562,588, filed on Sep. 25, 2017.
Claims priority of provisional application 62/536,297, filed on Jul. 24, 2017.
Claims priority of provisional application 62/532,574, filed on Jul. 14, 2017.
Prior Publication US 2022/0372972 A1, Nov. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F04B 53/22 (2006.01); F04B 53/16 (2006.01); F04B 1/122 (2020.01); F04B 1/16 (2006.01); F04B 1/145 (2020.01); F16B 35/00 (2006.01); F16B 39/24 (2006.01); F16B 43/00 (2006.01); F04B 1/18 (2020.01); F04B 1/0408 (2020.01); F04B 1/0421 (2020.01)
CPC F04B 53/22 (2013.01) [F04B 1/0408 (2013.01); F04B 1/0421 (2013.01); F04B 1/122 (2013.01); F04B 1/145 (2013.01); F04B 1/16 (2013.01); F04B 1/18 (2013.01); F04B 53/16 (2013.01); F16B 35/005 (2013.01); F16B 39/24 (2013.01); F16B 43/00 (2013.01); F05B 2260/301 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A fluid end assembly, comprising:
a housing having an external surface and an internal chamber;
a first conduit formed in the housing and having first and second sections, each section independently interconnecting the internal chamber and the external surface;
a second conduit formed in the housing, intersecting the first conduit, and having third and fourth sections, each section independently interconnecting the internal chamber and the external surface; in which no threads are formed in any walls of the housing surrounding the third section;
a component installed within the third section;
a retainer engaging the component, in which the retainer defines a threaded central opening;
a fastener installed within the retainer and configured to releasably hold the retainer against the component;
a plurality of packing seals installed within the component; and
a packing nut installed within the threaded central opening of the retainer and configured to releasably hold the plurality of packing seals within the component.