Tunnel vent venturi for water craft
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United States of America Patent
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Jan 8, 2019
Grant Date -
N/A
app pub date -
Mar 26, 2018
filing date -
Mar 26, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
Pontoon hulls, devices, systems and methods for providing lower friction surfaces on the hulls to increase the efficiency of motorized pontoon boats moving through the water. The inner side walls and the tunnel ceiling surface between the pontoons in a motorized pontoon boat can be provided with a plurality of longitudinal vent channels in a U shaped configuration. The vent channels can have open ends facing the rear end (stern) of the water craft and opposite closed ends facing the forward end (bow) of the water craft. As the water craft moves forward, a bubbling effect can occur in low pressure zones about the rear (stern) facing open ends of the plurality of vents to reduce the water surfaces in contact with the pontoon hull surfaces. A plurality of open rear (stern facing) ends of the vents and closed front (bow facing) ends of the vents can be arranged in series with two parallel vent series on a left inner sides of the left pontoon, two parallel vent series on a right inner sides of the right pontoon, and two parallel vent series on top of the tunnel between the pontoons.
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