Electrical fluid pumping device including first and second pumpi

Marine propulsion – Means for accomodating or moving engine fluids – Cooling for engine

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Details

123 73AD, 417503, B63H 2110

Patent

active

045739323

ABSTRACT:
A marine propulsion device including a fluid pumping device comprising a first mechanism for pumping fluid comprising a pump housing defining a recess, a movable wall which is in the recess and which cooperates with the recess to define a variable volume fluid pumping chamber, a fluid inlet in communication with the fluid pumping chamber, a check valve in the fluid inlet permitting fluid flow into and preventing fluid flow from the fluid pumping chamber, a fluid outlet in communication with the fluid pumping chamber, a check valve in the fluid outlet preventing fluid flow into and permitting fluid flow from the fluid outlet, a spring for moving the movable wall in one direction, a solenoid mechanism comprising a plunger connected to the movable wall and a solenoid coil for moving the plunger and the movable wall in an opposite direction against the action of the spring, and a second mechanism connected to the movable wall for pumping fluid.

REFERENCES:
patent: 2926615 (1960-03-01), Coffey
patent: 3765802 (1973-10-01), Leitermann
patent: 4263602 (1981-04-01), Matsumoto et al.
patent: 4381741 (1983-05-01), Walsworth
patent: 4383504 (1983-05-01), Walsworth

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