Patent ID: 6511302
Filing Date: 2003-01-28
Classification: F04B,Y10S

Abstract:
A water box-free piston pump for a slurry material comprising:a reciprocating drive rod having an end; a piston supported at an end of the drive rod; a piston cylinder having a sidewall defining an interior extending between a back end and a front end, the piston being mounted in the interior of the piston cylinder so as to be movable between the back and front ends thereof whereby to pump slurry material into and out of the front end of the piston cylinder in response to reciprocation of the drive rod; and a fluid cleaning system consisting essentially of a fluid hose having a cylinder end and a distal end, the cylinder end of the fluid hose being fluidically coupled into the back end of the piston cylinder whereby to expose fluid in the fluid hose to the drive rod and the interior of the piston cylinder at the back end thereof.