Patent ID: 6257843
Filing Date: 2001-07-10
Classification: F04B

Abstract:
A double-acting simplex plunger pump comprising:A) first and second unitary combined plunger stuffing box and head members, each member comprising:i) a unitary block having two spaced apart parallel surfaces respectively designated a motor end face engaging surface and a pump manifold engaging surface;ii) a plunger receiving recess in said block for receiving a cylindrically shaped plunger, said recess having a longitudinal axis lying parallel to and between said spaced apart parallel surfaces;iii) a pair of spaced apart parallel bores:a) having longitudinal axes lying in a plane perpendicular to said longitudinal axis of said plunger receiving recess; andb) extending through said block between and transverse to said spaced apart parallel surfaces on opposite sides of said longitudinal axis of said plunger-receiving recess; andiv) a pair of annular bosses projecting from said motor end face engaging surface, said bosses being respectively concentric with said bores, and having a preselected diameter; andB) a manifold having a longitudinal axis, a bottom flat surface adapted to be abutted by said pump manifold engaging surfaces of said first and second members, and a plurality of centrally positioned, spaced apart transverse bores normal to said manifold longitudinal axis;C) a cylindrically shaped plunger, having at two ends thereof, pumping surfaces and a centrally located crank engageable recess;D) a motor having a planar axial end face, and an output shaft rotatable about a shaft axis and extending axially from and perpendicular to said end face;E) crank means on said output shaft;F) two sets of recesses in said motor end face, each of said sets comprising a pair of recesses having a preselected diameter and spaced apart a preselected distance so as to receive a pair of said circular bosses, and said sets being positioned in said motor end face so that when said recesses are engaged by said bosses of said members, the plane defined by the bore axes of one of said members is parallel to the plane defined by the bore axes of the other of said members;G) threaded means in said motor concentric with said recesses; andH) screw members passing through said plurality of transverse bores of said manifold, said parallel bores of said first and second members, and into said threaded means in said motor to thereby hold in assembled relationship said motor, said first and second members with said plunger being positioned in said plunger receiving recesses of said blocks and with said crank means connected to said motor output shaft and to said centrally located crank engageable recess, and said manifold.