Patent ID: 8376723
Filing Date: 2013-02-19
Classification: F04B,F16C

Abstract:
1. 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, the crosshead having a width from one side to another; a partially cylindrical receptacle located within the crosshead at an end opposite the plunger, the receptacle extending across the entire width of the crosshead and having circumferential ends defining a gap that extends across the entire width of the crosshead, the gap having a circumferential extent that is less than 180 degrees; a partially cylindrical main bushing segment in the receptacle extending across the entire width of the crosshead, and extending circumferentially no more than 180 degrees; a partially cylindrical upper bushing segment extending across the entire width of the crosshead, having a circumferential upper end in abutment with a circumferential upper end of the main bushing segment and a circumferential lower end at an upper edge of the gap; a partially cylindrical lower bushing segment extending across the entire width of the crosshead, having a circumferential lower end in abutment with a circumferential lower end of the main bushing segment and a circumferential upper end at a lower edge of the gap; and a connecting rod having a crankshaft endpiece and a crosshead endpiece, the crankshaft endpiece rotatably connected to the crankshaft, the crosshead endpiece being in pivotal engagement with the main, upper and lower bushing segments in the receptacle of the crosshead.