Patent ID: 11859732
Assignee: KERR MACHINE CO.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A fluid end assembly, comprising:
a housing having an external surface and internal chamber;
a first conduit formed in the housing and having first and second sections, each section independently interconnecting the internal chamber and the external surface;
a second conduit formed in the housing, intersecting the first conduit and having third and fourth sections, each section independently interconnecting the internal chamber and the external surface;
an endless groove formed in the fluid end housing and surrounding the third section of the second conduit;
a tubular sleeve installed within the third section, the sleeve of single-piece construction and having first and second surfaces joined by an outer intermediate surface that extends along a length of the sleeve;
in which the length of the sleeve is bounded by the first and second surfaces;
in which the outer intermediate surface has a constant outer diameter along the length of the sleeve;
in which no threads are formed in the outer intermediate surface of the sleeve; and
in which no grooves are formed in the outer intermediate surface of the sleeve for housing a seal;
an annular seal installed within the endless groove and engaging the outer intermediate surface of the sleeve;
a plunger packing installed within the sleeve and abutting an internal shoulder formed within the sleeve;
a retainer engaging the second surface of the sleeve and defining a threaded central opening; and
a packing nut installed within the threaded central opening of the retainer and engaging the plunger packing.