Patent ID: 11920583
Assignee: KERR MACHINE CO.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
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.