| 摘要 |
<p>A float has a hollow body which is formed of a synthetic resin material and accommodates one or more electric batteries providing power to a motor coupled to a propeller screw which propels the float. The chamber (21) or holder for the batteries is provided eccentrically of a generally cylindrical portion of the body in a region which forms a vertically lower region in the floating orientation of the float. A motor chamber (31) is provided in the tail portion of the body contiguously with the battery chamber or holder. An air chamber (37) extends axially to the rear of the motor chamber (31) and has a boundary wall which is generally parallel to the longitudinal diametric plane of the cylindrical portion of the body. In the floating orientation this boundary wall forms a horizontal bottom wall to the air chamber (37) extension which lies above the horizontal medial plane of the cylindrical portion. Extending laterally of the float body in the region of the extended air chamber (37) are tailplanes which in the floating orientation are horizontal. A tail fin (36) projects from the boundary wall perpendicularly to the tailplanes in a direction which is vertically downward in the floating orientation.</p> |
