Pump crosshead and connecting rod assemblies
AssigneeA&W Energy, LLC
InventorJohn D. Morreale
Life of this patent
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Abstract
A pump power end includes an assembly comprising a crosshead, a connecting rod, and a joint. The joint may include a knuckle and a keeper. The connecting rod may include a forked end comprising two tines with a gap in the middle. The knuckle of the joint may be fixedly coupled to both tines. The crosshead may include a socket within which the knuckle of the joint is rotatably received. The keeper of the joint may include a body with a recess aligned with the socket to form a cavity within which the knuckle is disposed. The body of the keeper may be coupled to the crosshead and reside in the gap in the forked end of the connecting rod to retain the knuckle.
Claims18
An assembly comprising:
- a crosshead comprising a middle portion with a socket formed therein;
- a connecting rod comprising a forked end including a gap;
- and
- a joint that couples the crosshead to the connecting rod, the joint comprising:
- a knuckle fixedly coupled to the forked end of the connecting rod;
- and
- a keeper comprising:
- a body disposed within and filling the gap in the forked end of the connecting rod, wherein the body is fixedly coupled to the middle portion of the crosshead;
- and
- a recess aligned with the socket to form a cavity within which the knuckle is rotatably retained.
An assembly comprising:
- a crosshead comprising a top surface, a middle portion with a semicircular socket formed therein, and a bottom surface;
- a connecting rod comprising a forked end including a first tine, a second tine, and a gap therebetween;
- and
- a joint separate from and disposed within the crosshead between the top surface and the bottom surface, the joint comprising:
- a cylindrical knuckle fastened to the first tine and the second tine of the connecting rod;
- and
- a C-shaped keeper including a semicircular recess;
- wherein the keeper is fastened to the middle portion of the crosshead and oriented such that the semicircular recess is aligned with the semicircular socket to form a circular cavity within which the knuckle is rotatably retained;
- and
- wherein the keeper is positioned within the gap, and the keeper engages the first tine and the second tine within the gap.
Dependencies are inferred from the claim text.