On-water/underwater movable toy

Abstract

The present invention provides an on-water/underwater movable toy which has the optimal form for high-speed on-water cruising like a leisure boat and a racing boat, and which can also cruise underwater. The on-water/underwater movable toy according to the present invention comprises: a hull having a boat-shaped deck board that is in close contact with a boat bottom without any clearance therebetween; a screw mounted under said boat bottom; a ladder controllably mounted on said boat bottom; a recess prepared on a boat stern, the recess getting deeper toward the direction of movement; and an elevator disposed at the lower end of said recess, having a shape similar to that of said recess, and being controllably pivotable about a horizontal axis defined by the two elevator-holding axis supports projecting downward from the rear portion of the boat bottom.

1 . An on-water/underwater movable toy comprising:
 a hull having a boat-shaped deck board that is in close contact with a boat bottom without any clearance therebetween;   a screw mounted under said boat bottom;   a ladder controllably mounted on said boat bottom;   a recess prepared on a boat stern, the recess getting deeper toward the direction of movement; and   an elevator disposed at the lower end of said recess, having a shape similar to that of said recess, and being controllably pivotable about a horizontal axis defined by the two elevator-holding axis supports projecting downward from the rear portion of the boat bottom.   
   
   
       2 . The on-water/underwater movable toy according to  claim 1 , which cruises on water when said elevator is horizontal in relation to the hull, and which can cruise underwater when the rear end of said elevator is brought pivotably downward in relation to the hull. 
   
   
       3 . The on-water/underwater movable toy according to  claim 1 , having a groove which is cut all around the hull, between said deck board and said boat bottom, except the rear portion thereof. 
   
   
       4 . The on-water/underwater movable toy according to  claim 1 , wherein said recess takes such a form as to get greater in width toward the stern side and smaller in width toward the bow side, and wherein said elevator takes an isosceles trapezoid form. 
   
   
       5 . The on-water/underwater movable toy according to  claim 1 , wherein said elevator, said ladder and said screw are remotely operable by radio control.