Outboard motor powered low lift pump

Claim 2

An outboard motor powered low head, high volume pump for pumping water from an inlet to an outlet comprising: a weir structure separating the inlet from the outlet; a Venturi tube transpiercing said weir structure, said Venturi tube having an acceleration chamber communicated to said inlet, a decleration tube communicated to said outlet and a throat section therebetween; and, an outboard motor having a water discharge means for mounting said outboard motor in front of said acceleration chamber of said Venturi tube with said water discharge directed into said acceleration chamber.

Claim 3

The invention of claim 1 and wherein said Venturi tube transpierces said levy structure at the throat of said Venturi tube.

Claim 4

The invention of claim 1 and wherein said Venturi tube is constructed symmetrically about an axis and acceleration chamber and said deceleration chamber are each frustoconical in shape.

Claim 5

The invention of claim 3 and wherein the side walls of said acceleration chamber are inclined at substantially a 45* angle with respect to said axis.

Claim 6

The invention of claim 3 and wherein the side walls of said deceleration chamber are inclined at substantially a 10* angle with respect to said axis.

Claim 7

An outboard motor powered low head, high volume pump from pumping water through a levy structure from an inlet side on one side of said levy structure to an outlet side on the other side of said levy structure, said pump comprising: a Venturi tube having an acceleration chamber, a deceleration chamber, and a throat section therebetween; means for mounting said Venturi tube to immerse said acceleration tube in said inlet and to communicate said deceleration tube to said outlet; an outboard motor having a water discharge; and, means for mounting said outboard motor in front of the acceleration chamber of said Venturi tube with said water discharge directed into said acceleration chamber.

Claim 8

An outboard motor powered low head, high volume pump from pumping water through a levy structure from an inlet side on one side of said levy structure to an outlet side on the other side of said levy structure, said pump comprising: a Venturi tube having an acceleration chamber, a deceleration chamber, and a throat section therebetween; means for mounting said Venturi tube to immerse said acceleration tube in said inlet and to communicate said deceleration tube to said outlet; an outboard motor having a water discharge; and, means for mounting said outboard motor in front of the acceleration chamber of said Venturi tube with said water discharge directed into said acceleration chamber.

Claim 9

The invention of claim 6 and wherein said means for mounting said Venturi tube to immerse said acceleration chamber in said inlet includes a float, means for dependingly suspending said Venturi tube from said float to immerse said acceleration chamber in said inlet and said means for mounting said outboard motor is mounted to and supported by said float.

Claim 10

The invention of claim 6 and wherein said deceleration chamber includes at least first and second frustroconical sections with the greatest diameter of one frustroconical section being larger than the smallest diameter of the other frustroconical section whereby said first and second frustroconical sections can telescope one upon another to reduce the length of said deceleration chamber.

Claim 11

An outboard motor powered low head, high volume pump for pumping water from an inlet water body at a first elevation to an outlet water body at a second and high elevation with a water-tight barrier separating said inlet and outlet water body, said pump comprising: a Venturi tube having an acceleration chamber, a deceleration chamber, and a throat therebetween; means for mounting said Venturi tube to immerse said acceleration chamber in said inlet water body; means communicating said deceleration chamber to said outlet water body; an outboard motor having a propeller for discharging water and a motor for driving said propeller to discharge said water; means for mounting said outboard motor with said propeller in front of said acceleration chamber of said Venturi tube with said water discharge directed into said acceleration chamber; and, said motor and propeller having sufficient water discharge power to accelErate water at the throat of said Venturi tube to a velocity at said throat which exceeds in velocity head the difference in static head between the lower elevation of said inlet and the higher elevation of said outlet.

Claim 12

An outboard motor powered low head, high volume pump for pumping water from an inlet water body at a first elevation to an outlet water body at a second and high elevation with a water-tight barrier separating said inlet and outlet water body, said pump comprising: a Venturi tube having an acceleration chamber, a deceleration chamber, and a throat therebetween; means for mounting said Venturi tube to immerse said acceleration chamber in said inlet water body; means communicating said deceleration chamber to said outlet water body; an outboard motor having a propeller for discharging water and a motor for driving said propeller to discharge said water; means for mounting said outboard motor with said propeller in front of said acceleration chamber of said Venturi tube with said water discharge directed into said acceleration chamber; and, said motor and propeller having sufficient water discharge power to accelErate water at the throat of said Venturi tube to a velocity at said throat which exceeds in velocity head the difference in static head between the lower elevation of said inlet and the higher elevation of said outlet.