Connecting rod without wrist pin

A reciprocating pump assembly, comprising:

• a pump housing that houses a crankshaft;
• a plunger for pumping a fluid through a cylinder, the cylinder having fluid ports for ingress and egress of the fluid;
• a crosshead operatively engaged with the plunger at one end;
• upper and lower retainer blocks secured to a face of the crosshead that faces away from the pump housing, the upper and lower retainer blocks extending an entire width of the crosshead;
• a partially cylindrical receptacle having a partially cylindrical main portion located within the crosshead that extends across the entire width of the crosshead and circumferentially no more than 180 degrees, a partially cylindrical upper portion that extends across the entire width of the crosshead, that extends circumferentially less than 180 degrees and is located in the upper retainer block, and a partially cylindrical lower portion that extends across the entire width of the crosshead, that extends circumferentially less than 180 degrees and is located in the lower retainer block, the portions of the receptacle within the retainer blocks having circumferential ends, defining a gap between the circumferential ends that extends across the entire width of the crosshead, that extends circumferentially less than 180 degrees and faces toward the crankshaft;
• a partially cylindrical main bushing segment located in the main portion of the receptacle;
• a partially cylindrical upper bushing segment located in the upper retainer block, the upper bushing segment having a circumferential upper end in abutment with a circumferential upper end of the main bushing segment, the upper bushing segment having a circumferential lower end positioned at an upper edge of the gap;
• a partially cylindrical lower bushing segment located in the lower retainer block, the lower bushing segment having a circumferential lower end in abutment with a circumferential lower end of the main bushing segment, the lower bushing segment having circumferential upper end positioned at a lower edge of the gap;
• and
• a connecting rod having a crankshaft endpiece rotatably connected to the crankshaft, the connecting rod having a portion extending through the gap between the upper and lower retainer blocks and a crosshead endpiece in pivotal engagement with the main, upper and lower bushing segments in the receptacle of the crosshead.

A connecting rod assembly, comprising:

• a connecting rod;
• a single-piece crosshead adapted to operatively engage with a plunger at one end;
• a partially cylindrical receptacle located entirely within the crosshead at an end opposite the plunger, the receptacle extending across the entire width of the crosshead, extending circumferentially greater than 180 degrees and having circumferential ends, defining a gap that extends across the entire width of the crosshead, less than 180 degrees and faces toward a crankshaft;
• a single-piece bushing located within, extending across the entire width of the crosshead and extending a same circumferential extent as the receptacle;
• the connecting rod having a crankshaft endpiece adapted to be rotatably connected to the crankshaft;
• the connecting rod having a portion that extends through the gap;
• and
• the connecting rod having a crosshead endpiece in pivotal engagement with the bushing in the receptacle of the crosshead.