초록 ▼

The hull of the motorboat is provided on its bottom with three recesses disposed in a tricycle arrangement, each housing a retractable landing wheel. At least one of the wheels is powered by a suitable fluid operated motor. Shutters are provided operatively associated with the retractable wheel, to

The hull of the motorboat is provided on its bottom with three recesses disposed in a tricycle arrangement, each housing a retractable landing wheel. At least one of the wheels is powered by a suitable fluid operated motor. Shutters are provided operatively associated with the retractable wheel, to close the wheel housing recesses each time the respective wheel is retracted in the recess, thus re-establishing the continuity of the hull bottom.

대표청구항 ▼

A motorboat provided with power operated retractable wheels for landing on beaches comprising a hull provided on its bottom with a triangular array of three recesses, one of said recesses being located at the bow end of said boat, and the other recesses being aligned with each other at the stern end

A motorboat provided with power operated retractable wheels for landing on beaches comprising a hull provided on its bottom with a triangular array of three recesses, one of said recesses being located at the bow end of said boat, and the other recesses being aligned with each other at the stern end of said boat, an extendable and retractable landing gear mounted in each recess, an endless track wheel mounted on the landing gear in the bow recess and fixed to rotate in a plane parallel to the keel of said boat, means for driving said track wheel to propel said boat on the ground, first hydraulic means for extending and retracting said landing gear in said bow recess, a wheel mounted on each of the landing gears in the stern recesses to pivot steerably about a vertical axis, second hydraulic means for extending and retracting said landing gears in said stern recesses, and steering means interconnecting the wheels in said stern recesses for conjoint pivoting, and shutter means pivotally mounted adjacent each recess and being adapted to span said recess, and articulated link means operatively interconnecting said shutter means with the assOciated landing gears in the respective recesses to conjointly open and close said recesses each time said landing gears are extended from and retracted into their recesses.