Swimming pool cleaner

Abstract

A self-propelled swimming pool cleaner which randomly covers the bottom of the pool. Water pumped from the bottom of the unit filters dirt carried thereby, then uses the pumped water to propel the device either forward or backward. A pivoted front axle causes the path of the unit to vary when changing from forward to backward so that the unit randomly covers the entire pool bottom. Spring loaded doors may be provided to allow water to exit when the unit is lifted out of the pool. A sealed motor unit has a metal portion to transfer heat from the motor.

1 . A swimming pool cleaner comprising: 
 a hollow body mounted on wheels;    a motor and pump assembly mounted within said body for pumping water from said swimming pool into said body and ejecting it therefrom;    said motor and pump assembly including a housing which includes a top plastic cap, a bottom plastic cap and a central metal portion;    said housing enclosing said motor and filled with dielectric liquid.