US 11,920,583 B2
Fluid end with clamped retention
Kelcy Jake Foster, Ardmore, OK (US); Micheal Cole Thomas, 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 Mar. 3, 2022, as Appl. No. 17/685,936.
Claims priority of provisional application 63/213,914, filed on Jun. 23, 2021.
Claims priority of provisional application 63/195,354, filed on Jun. 1, 2021.
Claims priority of provisional application 63/187,153, filed on May 11, 2021.
Claims priority of provisional application 63/161,080, filed on Mar. 15, 2021.
Claims priority of provisional application 63/157,215, filed on Mar. 5, 2021.
Prior Publication US 2022/0282720 A1, Sep. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F04B 53/16 (2006.01); F04B 1/0538 (2020.01); F04B 19/22 (2006.01); F04B 23/06 (2006.01); F04B 27/00 (2006.01); F04B 39/12 (2006.01); F04B 39/14 (2006.01); F04B 53/02 (2006.01); F04B 53/22 (2006.01)
CPC F04B 53/164 (2013.01) [F04B 1/0538 (2013.01); F04B 19/22 (2013.01); F04B 27/00 (2013.01); F04B 39/122 (2013.01); F04B 23/06 (2013.01); F04B 39/14 (2013.01); F04B 53/02 (2013.01); F04B 53/22 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A fluid end, comprising:
a housing having a longitudinal axis and 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 extending along the longitudinal axis of the housing;
a retainer abutting the rear surface of the housing;
a clamp engaging at least a portion of the retainer and at least a portion of the housing and securing the retainer and housing together;
a reciprocating plunger disposed within the bore and the retainers;
one and only one packing seal installed within the housing and engaging an outer surface of the plunger; and
a wear ring installed within the housing and surrounding the one and only one packing seal;
in which the one and only one packing seal comprises opposed first and second surfaces; in which the bore opens into a counterbore adjacent the rear surface of the housing; and in which the second surface of the packing seal and the wear ring engage a base of the counterbore.