US 12,152,582 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 May 22, 2023, as Appl. No. 18/321,054.
Application 18/321,054 is a continuation of application No. 17/882,267, filed on Aug. 5, 2022, granted, now 11,655,812.
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 2023/0287882 A1, Sep. 14, 2023
Int. Cl. F04B 53/22 (2006.01); F04B 1/0408 (2020.01); F04B 1/0421 (2020.01); F04B 1/122 (2020.01); F04B 1/145 (2020.01); F04B 1/16 (2006.01); F04B 1/18 (2020.01); F04B 53/16 (2006.01); F16B 35/00 (2006.01); F16B 39/24 (2006.01); F16B 43/00 (2006.01)
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)] 15 Claims
OG exemplary drawing
 
1. A fluid end assembly, comprising:
a housing made of a single, integrally-formed piece and comprising:
a first horizontal bore and a first vertical bore formed within the housing, the first vertical bore intersecting the first horizontal bore to form a first internal chamber;
a second horizontal bore and a second vertical bore formed within the housing, the second vertical bore intersecting the second horizontal bore to form a second internal chamber;
in which the second horizontal bore, the second vertical bore, and the second internal chamber are situated in a side-by-side relationship with the first horizontal bore, the first vertical bore, and the first internal chamber;
a first pair of valves, each valve installed within the first vertical bore and positioned on opposite sides of the first internal chamber;
a second pair of valves, each valve installed within the second vertical bore and positioned on opposite sides of the second internal chamber;
a first plug and a first reciprocating plunger installed within the first horizontal bore and positioned on opposite sides of the first internal chamber;
a second plug and a second reciprocating plunger installed within the second horizontal bore and positioned on opposite sides of the second internal chamber;
a plate fastened to the housing along an exterior surface containing openings to the first and second horizontal bores;
a first component having a central opening formed therein, at least a portion of the first component installed within the first horizontal bore and at least a portion of the first reciprocating plunger installed within the central opening of the first component;
a first plurality of packing seals installed within the first component and engaging the first reciprocating plunger; and
a first packing nut attached to the first component and holding the first plurality of packing seals within the first component.