Patent ID: 11959476
Assignee: SPM OIL & GAS INC.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC F

Claim 0:
1. A fluid end for a reciprocating pump system, comprising: a fluid end block defining a fluid chamber and a packing bore; an outlet fluid passage formed in the fluid end block in fluid communication with the fluid chamber, the outlet fluid passage including an outlet valve; an inlet fluid passage formed in the fluid end block in fluid communication with the fluid chamber, the inlet fluid passage including an inlet valve; a plunger reciprocally disposed in the packing bore of the fluid chamber to generate fluid pressure therewithin; packing disposed in the packing bore positioned to contact the plunger; and a packing sleeve disposed between the packing and the packing bore, the packing sleeve being configured as a hollow cylinder, the hollow cylinder including: an inner surface, an outer surface opposite the inner surface, an inner end configured to be inserted first into the packing bore, and an outer end, the inner surface including a notch formed therein adjacent the inner end, and the inner end and the notch being in closer proximity to the fluid chamber than the outer end.