Black Horse, LLC

Jacob Brown

Daryl Belshan

James Anthony Barnhouse, Jr

Zhaoxu Dong

Wenming Zhao

Mark J Carls

A frame includes a rib. The frame also includes a crosshead tube that is integral with the rib. The frame also includes a lube rail that is integral with the rib, the crosshead tube, or both. The frame also includes a nose plate that is integral with the rib, the crosshead tube, the lube rail, or a combination thereof.

Power end of a pump

A fluid end of a pump includes a body that defines a suction bore, a discharge bore, and a plunger bore. A first central longitudinal axis extends through the suction bore, the discharge bore, or both. A second central longitudinal axis extends through the plunger bore. A chamber is defined at an intersection between the suction bore, the discharge bore, and the plunger bore. An interior surface of the body that at least partially defines the chamber comprises a first wall portion that is at least partially planar and oriented at an angle that is less than or equal to 15&#xb0; from perpendicular to the first central longitudinal axis.

Fluid end of a reciprocating pump with reduced stress

A seal assembly includes a packing nut and a pressure ring configured to be coupled to the packing nut. An inner surface of the pressure ring defines a first circumferential groove that is configured to receive a first seal. The first seal is configured to be inserted into the first circumferential groove before the packing nut is coupled to the pressure ring such that the first seal is inserted into the first circumferential groove without being substantially flexed.

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Rapid City, SD, United States of America

Jacob Brown