Pumps – With condition responsive pumped fluid control
Patent
1991-01-16
1992-05-05
Bertsch, Richard A.
Pumps
With condition responsive pumped fluid control
417286, 417287, 417428, 417363, 417366, F04B 4900, F04B 1700, F04B 3500, F04B 4106
Patent
active
051102650
ABSTRACT:
A fuel pump having a first pumping mechanism for pumping a fuel in a main tank to a subtank and having a second pumping mechanism for pumping the fuel in the subtank to an outside of the main tank. The fuel pump includes a rotatable impeller having a plurality of outer peripheral vanes, and a wall member surrounding the vanes so as to define a fuel flow passage. The wall member has two partition walls for partitioning the fuel flow passage into a first pumping passage and a second pumping passage, a first suction hole for communicating an upstream end of the first pumping passage to the main tank, a first discharge hole for communicating a downstream end of the first pumping passage to the subtank, a second suction hole for communicating an upstream end of the second pumping passage to the subtank, and a second discharge hole for communicating a downstream end of the second pumping passage out of the main tank.
REFERENCES:
patent: 3315880 (1965-10-01), Kropiwnicki
patent: 3317121 (1965-10-01), DeGroat
patent: 4780067 (1988-10-01), Suzuki et al.
patent: 4961693 (1990-10-01), Hoover et al.
patent: 4998865 (1991-03-01), Nakanishi et al.
Kato Kiyoshi
Suzuki Isamu
Toshima Seiji
Aisan Kogyo Kabushiki Kaisha
Basichas Alfred
Bertsch Richard A.
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