Patent ID: 6957872
Filing Date: 2005-10-25
Classification: B60T

Abstract:
1. A pump assembly for pumping fluid comprising: a master cylinder assembly having a master cylinder and a reservoir; a motor having a rotatable shaft; an eccentric positioned on said shaft; a first pump disposed on a first side of said shaft and driven in pumping motion by said eccentric during rotation of said eccentric with said shaft; a second pump disposed at an end of said shaft and driven in pumping motion by said shaft; a first fluid line extending from an outlet of said second pump; a second fluid line extending between said reservoir and an inlet of said second pump; a third fluid line extending from said first fluid line adjacent said outlet to a position along said second fluid line between said reservoir and said inlet; and a pressure bypass valve moveable from a closed position to an open position in response to a predetermined fluid pressure in said first fluid line.