Patent ID: 7614386

Claim:
A manually operable fuel pump comprising: a housing formed with an inlet port adapted to be connected to a supply of fuel and an outlet port adapted to be connected to a fuel-delivery system and with a chamber communicating with both ports; a sleeve in the chamber and between the ports and formed with a main passage that is completely clear of obstructions and with a secondary passage, the sleeve being shiftable between an operating position in which the main passage is aligned with the inlet and outlet ports and permits free flow therebetween and a pumping position in which the main passage is blocked and the secondary passage is aligned with the inlet and outlet ports; a check valve in the secondary passage only permitting flow therethrough in the pumping position from the inlet port to the outlet port and pump means connected to the sleeve manually operable for, in the pumping position, drawing fluid in through the inlet port and expelling it from the outlet port.