US 12,305,628 B2
Packing seal assembly
Christopher Todd Barnett, Stratford, OK (US); Micheal Cole Thomas, Ardmore, 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 Mar. 14, 2024, as Appl. No. 18/605,254.
Application 18/605,254 is a continuation of application No. 17/884,757, filed on Aug. 10, 2022, granted, now 11,946,465.
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 63/304,070, filed on Jan. 28, 2022.
Claims priority of provisional application 63/301,524, filed on Jan. 21, 2022.
Claims priority of provisional application 63/246,099, 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.
Prior Publication US 2024/0218865 A1, Jul. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F04B 39/12 (2006.01); F04B 1/0538 (2020.01); F04B 19/22 (2006.01); F04B 23/06 (2006.01); F04B 27/00 (2006.01); F04B 39/14 (2006.01); F04B 53/02 (2006.01); F04B 53/16 (2006.01); F04B 53/22 (2006.01); F16J 15/26 (2006.01); F16J 15/3236 (2016.01); F16J 15/56 (2006.01)
CPC F04B 39/122 (2013.01) [F04B 1/0538 (2013.01); F04B 19/22 (2013.01); F04B 27/00 (2013.01); F04B 39/121 (2013.01); F04B 53/164 (2013.01); F16J 15/26 (2013.01); F04B 23/06 (2013.01); F04B 39/14 (2013.01); F04B 53/02 (2013.01); F04B 53/22 (2013.01); F16J 15/3236 (2013.01); F16J 15/56 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A fluid end, comprising:
a housing having opposed front and rear surfaces joined by an outer intermediate surface;
a bore formed within the housing and interconnecting the front and rear surfaces, the bore having a central longitudinal axis;
a reciprocating plunger, at least a portion of the reciprocating plunger installed within the bore;
one and only one packing seal installed within the bore and engaging an outer surface of the plunger;
a packing nut attached to the housing and holding the one and only one packing seal within the bore;
a suction valve installed within the bore;
a discharge valve installed within the bore; and
a fluid routing plug installed within the bore; in which the fluid routing plug is situated intermediate the suction valve and the discharge valve;
in which the suction valve, discharge valve, and fluid routing plug are axially aligned along the central longitudinal axis of the bore.