Patent ID: 8011993

Claim:
A diving toy, comprising: (a) a housing having a predetermined orientation and positive buoyancy when placed in water; (b) an electric motor in said housing; (c) a propeller attached to said motor; (d) a control system comprising a flow sensor means positioned outside said housing for sensing water flowing rearwardly over said housing at a predetermined velocity, and a switch means responsive to said flow sensor means, said switch means being constructed and arranged for switching on/off said motor under certain conditions; (e) a battery in said housing to power said motor and the control system; whereby when said diving toy is dropped or thrown into a body of water, or when pushed in a downward motion from a submerged state, hydrodynamic forces cause said flow sensor means to actuate said switch means to close a circuit between said battery and motor, thereby causing said motor to run and propel said toy in a dive; and when said dive and hydrodynamic forces stop because said toy collides with a bottom of said body of water or another object, said flow sensor means causes said switch means to open said circuit, thereby turning off said motor, causing said toy to float to a surface of said body of water.