US 12,276,270 B2
Fracturing pump arrangement using a plunger with an internal fluid passage
Mark S. Nowell, Ardmore, OK (US); Kelcy Jake Foster, Ardmore, OK (US); Micheal Cole Thomas, Ardmore, OK (US); Christopher Todd Barnett, Stratford, OK (US); Guy J. Lapointe, Sulphur, OK (US); and Brandon Scott Ayres, Ardmore, OK (US)
Assigned to Kerr Machine Co., Sulphur, OK (US)
Filed by Kerr Machine Co., Sulphur, OK (US)
Filed on Nov. 8, 2023, as Appl. No. 18/504,546.
Application 17/692,420 is a division of application No. 16/860,146, filed on Apr. 28, 2020, granted, now 11,578,710, issued on Feb. 14, 2023.
Application 18/504,546 is a continuation of application No. 17/987,960, filed on Nov. 16, 2022.
Application 17/987,960 is a continuation of application No. 17/692,420, filed on Mar. 11, 2022, granted, now 11,592,011, issued on Feb. 28, 2023.
Claims priority of provisional application 62/950,746, filed on Dec. 19, 2019.
Claims priority of provisional application 62/939,339, filed on Nov. 22, 2019.
Claims priority of provisional application 62/901,445, filed on Sep. 17, 2019.
Claims priority of provisional application 62/882,328, filed on Aug. 2, 2019.
Claims priority of provisional application 62/880,409, filed on Jul. 30, 2019.
Claims priority of provisional application 62/878,146, filed on Jul. 24, 2019.
Claims priority of provisional application 62/872,664, filed on Jul. 10, 2019.
Claims priority of provisional application 62/842,009, filed on May 2, 2019.
Prior Publication US 2024/0068455 A1, Feb. 29, 2024
Int. Cl. F04B 39/00 (2006.01); E21B 43/12 (2006.01); F04B 1/0408 (2020.01); F04B 39/10 (2006.01); F04B 53/16 (2006.01)
CPC F04B 39/0005 (2013.01) [E21B 43/129 (2013.01); F04B 1/0408 (2013.01); F04B 39/0016 (2013.01); F04B 39/10 (2013.01); F04B 53/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a plunger configured to reciprocate within a bore formed within a fluid end body, the plunger comprising:
a plunger body having a first end, a second end, and a fluid passageway, in which the fluid passageway interconnects the first end and the second end, the first end comprising a valve seat;
a valve assembly positioned at the first end of the plunger body and movable between open and closed positions, the valve assembly comprising:
a valve body positioned outside of the fluid passageway, the valve body configured to engage the valve seat;
a retainer installed within the fluid passageway;
a stem having a first end connected to the valve body and a free and opposed second end; in which the stem interconnects the valve body and the retainer, the retainer rotates with the stem and is free to move axially along the stem; in which the retainer is configured to limit axial movement of the valve body; and
a spring concentric with the stem and installed within the fluid passageway; in which the spring is situated between the retainer and the second end of the stem.