US 12,313,048 B2
Fluid end assembly
Micheal Cole Thomas, Azle, TX (US); Christopher Todd Barnett, Stratford, OK (US); Kelcy Jake Foster, Sulphur, OK (US); Nicholas Son, Davis, OK (US); and John Keith, Ardmore, OK (US)
Assigned to Kerr Machine Co., Sulphur, OK (US)
Filed by Kerr Machine Co., Sulphur, OK (US)
Filed on Sep. 10, 2024, as Appl. No. 18/829,964.
Application 18/829,964 is a continuation of application No. 18/493,526, filed on Oct. 24, 2023, granted, now 12,092,087.
Application 18/493,526 is a continuation of application No. 17/957,211, filed on Sep. 30, 2022, granted, now 11,808,254, issued on Nov. 7, 2023.
Application 17/957,211 is a continuation of application No. 17/884,712, filed on Aug. 10, 2022.
Application 17/884,712 is a continuation in part of application No. 17/550,552, filed on Dec. 14, 2021, granted, now 11,644,018, issued on May 9, 2023.
Application 17/550,552 is a continuation in part of application No. 17/515,707, filed on Nov. 1, 2021, granted, now 11,359,615, issued on Jun. 14, 2022.
Application 17/515,707 is a continuation of application No. 16/951,741, filed on Nov. 18, 2020, granted, now 11,162,479, issued on Nov. 2, 2021.
Claims priority of provisional application 63/312,541, filed on Feb. 22, 2022.
Claims priority of provisional application 63/310,269, filed on Feb. 15, 2022.
Claims priority of provisional application 63/309,168, filed on Feb. 11, 2022.
Claims priority of provisional application 63/304,070, filed on Jan. 28, 2022.
Claims priority of provisional application 63/301,524, filed on Jan. 21, 2022.
Claims priority of provisional application 63/283,487, filed on Nov. 28, 2021.
Claims priority of provisional application 63/246,099, filed on Sep. 20, 2021.
Claims priority of provisional application 63/240,889, filed on Sep. 4, 2021.
Claims priority of provisional application 63/235,251, filed on Aug. 20, 2021.
Claims priority of provisional application 63/233,241, filed on Aug. 14, 2021.
Claims priority of provisional application 63/168,364, filed on Mar. 31, 2021.
Claims priority of provisional application 63/155,835, filed on Mar. 3, 2021.
Claims priority of provisional application 63/150,340, filed on Feb. 17, 2021.
Claims priority of provisional application 63/148,065, filed on Feb. 10, 2021.
Claims priority of provisional application 63/125,459, filed on Dec. 15, 2020.
Claims priority of provisional application 63/089,882, filed on Oct. 9, 2020.
Claims priority of provisional application 63/076,587, filed on Sep. 10, 2020.
Claims priority of provisional application 63/053,797, filed on Jul. 20, 2020.
Claims priority of provisional application 63/046,826, filed on Jul. 1, 2020.
Claims priority of provisional application 63/040,086, filed on Jun. 17, 2020.
Claims priority of provisional application 63/033,244, filed on Jun. 2, 2020.
Claims priority of provisional application 63/027,584, filed on May 20, 2020.
Claims priority of provisional application 63/019,789, filed on May 4, 2020.
Claims priority of provisional application 63/018,021, filed on Apr. 30, 2020.
Claims priority of provisional application 63/008,036, filed on Apr. 10, 2020.
Claims priority of provisional application 62/990,817, filed on Mar. 17, 2020.
Claims priority of provisional application 62/968,634, filed on Jan. 31, 2020.
Claims priority of provisional application 62/960,194, filed on Jan. 13, 2020.
Claims priority of provisional application 62/960,366, filed on Jan. 13, 2020.
Claims priority of provisional application 62/959,570, filed on Jan. 10, 2020.
Claims priority of provisional application 62/957,489, filed on Jan. 6, 2020.
Claims priority of provisional application 62/953,763, filed on Dec. 26, 2019.
Claims priority of provisional application 62/940,513, filed on Nov. 26, 2019.
Claims priority of provisional application 62/936,789, filed on Nov. 18, 2019.
Prior Publication US 2025/0003399 A1, Jan. 2, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. F04B 1/0452 (2020.01); F04B 1/0421 (2020.01); F04B 1/0538 (2020.01); F04B 7/02 (2006.01); F04B 19/22 (2006.01); F04B 53/16 (2006.01); F04B 53/22 (2006.01); F16K 15/02 (2006.01); F16K 15/06 (2006.01); E21B 43/26 (2006.01); F04B 15/02 (2006.01); F04B 53/10 (2006.01)
CPC F04B 1/0538 (2013.01) [F04B 1/0421 (2013.01); F04B 1/0452 (2013.01); F04B 7/0208 (2013.01); F04B 19/22 (2013.01); F04B 53/16 (2013.01); F04B 53/164 (2013.01); F04B 53/22 (2013.01); F16K 15/026 (2013.01); F16K 15/063 (2013.01); E21B 43/2607 (2020.05); F04B 7/0266 (2013.01); F04B 15/02 (2013.01); F04B 53/1022 (2013.01); F04B 53/1032 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A fluid end, comprising:
a housing comprising opposed first and second surfaces and a horizontal bore formed therein; in which the horizontal bore joins a first opening formed on the first surface and a second opening formed on the second surface;
a fluid routing plug situated within the horizontal bore, the fluid routing plug having opposed first and second surfaces;
a suction valve situated within the horizontal bore, the suction valve comprising:
a stem joined to a body;
in which the body comprises a tapered sealing surface that is configured to engage the first surface of the fluid routing plug;
a suction valve guide situated within the horizontal bore, the suction valve guide comprising:
a skirt having a tapered upper section joined to a cylindrical lower section; and
a tubular body joined to the tapered upper section and centered within the skirt;
in which the tapered upper section is configured to engage a tapered surface of a wall surrounding the horizontal bore;
an insert situated within the tubular body of the suction valve guide;
a discharge valve including a discharge valve stem situated within the horizontal bore, in which the discharge valve is configured to engage the second surface of the fluid routing plug; and
a discharge plug situated within the horizontal bore the discharge plug including a plug body having an axially blind bore formed therein and being configured to receive at least a portion of the discharge valve stem in which the discharge plug is configured to form a barrier to fluid flow within the horizontal bore;
in which the insert is configured to receive at least a portion of the stem of the suction valve.