Patent ID: 6162024
Filing Date: 2000-12-19
Classification: F04B

Abstract:
A pump comprising:a housing having a fluid inlet and a fluid outlet defined therein;a nonrotatable pump barrel positioned in said housing including laterally disposed cylinder walls defining a cylinder having a longitudinal axis, an outlet end fluidically coupled with said outlet, an opposed open end, and an inlet port defined in said cylinder walls between said open end and said outlet end and positioned to receive fluid from said inlet into said cylinder;a piston received in said cylinder and presenting an outboard end extending through said open end of said cylinder, said piston being shiftable axially of the cylinder away from said outlet end during a charging stroke to draw fluid through said port into said cylinder, and axially shiftable towards said outlet end during a delivery stroke to displace fluid from said cylinder through said outlet end to said outlet;a rotatable pump shaft having an interior end positioned in said housing; anda wobble plate coupled with said interior end of said shaft and rotatable therewith, said plate engaging said outboard end of said piston and configured to stroke said piston alternately between said charging and delivery strokes during rotation.