Patent ID: 6431844
Filing Date: 2002-08-13
Classification: F04B

Abstract:
A pump for pumping a liquid, comprisinga pump assembly having a piston assembly for pumping the liquid from a first pressure to a second pressure; an eccentric assembly suitable for converting rotary motion of a rotating shaft of an engine to rectilinear motion; a flexible strap for coupling said eccentric assembly and said piston assembly; a head assembly coupled to said pump assembly, said head assembly including an inlet portion suitable for receiving the liquid at the first pressure and an outlet portion suitable for outputting the liquid at the second pressure; and a valve assembly disposed in said head assembly, said valve being suitable for opening to circulate the liquid within said head assembly from said inlet portion to said outlet portion as said pump is started and closing to circulate the liquid through said pump assembly above a predetermined rate of flow of the liquid, wherein said strap is suitable for communicating the rectilinear motion of said eccentric assembly to said piston assembly for reciprocating said piston to pump said liquid.