Patent ID: 7267533

Claim:
A reciprocating fuel pump comprising: a pump assembly including a drive section and a pump section; a drive assembly disposed in the drive section, the drive assembly providing a reciprocating motion to a drive member; said pump section having a pump chamber, an inlet for introducing a fluid into the pump chamber and an outlet for fluid to be expressed from the pump chamber; a plunger assembly comprising a plunger having an upper head region contacting the drive member, a lower end and a longitudinally extending passageway therebetween; and a valve stem movably located within the passageway and having a lower end including a poppet head, the plunger having an upper position where fluid can be introduced into the pump chamber through the inlet and a lower position where the fluid is forcefully pumped from the pump chamber through the outlet, the reciprocating motion of the drive member moving the plunger between said upper and lower positions, the plunger contacting said poppet head of said valve stem as said plunger moves from said upper position toward said lower position to forcefully move said valve stem into the pump chamber to pump the fluid in the pump chamber outwardly through the outlet.