Patent ID: 6164188
Filing Date: 2000-12-26
Classification: F04B,Y10T

Abstract:
An apparatus for pumping or compressing a fluid, comprising:a housing;a crankshaft disposed in the housing for receiving a rotative driving force;a crank disposed in the housing and connected to the crankshaft for converting a rotating motion of the crankshaft to a reciprocating motion;a crosshead disposed in the housing and connected to the crank, the crosshead having a reciprocating motion;a crosshead extension rod connected to the crosshead;an alignment adapter having first and second ends, the first end being secured to the crosshead extension rod, the second end having a cavity, the cavity having a hemispherical portion;a piston rod having first and second ends, the first end being received in the cavity of the alignment adapter;a cylinder disposed in the housing; anda sealing apparatus connected to the second end of the piston rod, the sealing apparatus being sealingly disposed in the cylinder, the sealing apparatus reciprocating in the cylinder and being capable of pumping or compressing the fluid.