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US 2007/0175082 A1Published application
Radio controlled boat
OwnerClive Barrettinventor
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OwnerClive Barrettinventor
Estimating the term…
This invention is a surf-launched, a submersible, self-righting radio controlled boat. It is one meter in length, 30 cm wide with a draught of 25 cm. The boat is electrically powered and operates on two 8 amp/hour dry cell batteries which power a 200 watt motor to which a 3:1 ratio reduction gearbox is attached driving a 115 mm 3-blade propeller. It is ideal for delivering a baited fishing line up to one km in oceans, dams and rivers. It is ideally used in conjunction with a battery-operated motorized winch whereby a line from the winch is attached to the boat in addition to the fishing line. Once the fishing line has been released, the winch pulls the boat back to shore. Other applications include underwater photography, recreation or life-saving where the boat itself, fitted with handles becomes a motorized life-buoy or the boat can be used to tow a life-buoy to a drowning bather.
A floatable vessel according to claim 24 in which the bow extension comprises a similar shape to that of the bow of the vessel and serves to lengthen the bow.
A floatable vessel according to any of the above claims in which for a 110 mm 3-blade rough pitch propeller, the motor comprises two 7.8 to 9 amp/hr dry cell batteries wired in parallel, connected through an on-off switch to a 300 amp Mosfet speed controller operating in a mark space ration basis and being connected to a brush motor wound to provide 12000 rpm at 12 volts, drive torque being achieved with the use of a 3:1 reduction box which provides a propeller speed underload of approximately 2500-3000 rpm.
A floatable vessel according to any of the above claims in which the vessel is provided with one or more inflatable tubes located about the perimeter of the deck to improve buoyancy.
A floatable vessel according to any of the above claims in which the vessel includes a propeller guard and/or rudder guard.
(canceled)
Dependencies are inferred from the claim text.