Patent ID: 6176171
Filing Date: 2001-01-23
Classification: F02M

Abstract:
A pump with precipitate inhibiting features comprising:a pump body defining a flushing fluid inlet and a flushing fluid outlet that open into a plunger bore;a plunger positioned in said plunger bore and being movable between a retracted position and an advanced position, and said plunger having a first end separated from a second end by a side surface;a portion of said side surface and said plunger bore defining a flush connection passage that connects said flushing fluid inlet to said flushing fluid outlet over an intermediate portion of said plunger's movement between said retracted position and said advanced position; andsaid side surface blocking fluid communication between said flushing fluid inlet and said flushing fluid outlet over a different portion of said plunger's movement between said retracted position and said advanced position.