Self-propelled underwater electromechanical apparatus for...

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E - Fixed Constructions

04

H

E04H 4/16 (2006.01)

Patent

CA 2137110

Self-propelled underwater electromechanical apparatus for cleaning the bottom and the walls of swimming pools, comprising an electric motor (2) which operates, on one hand, a propeller turbine (3) for circulating the water and, on the other hand, a driving unit for transmitting movement to a roller travel system (R). At least said electric motor and/or said driving unit are made with an open structure inside which the swimming-pool water freely circulates. The electric motor is of the brushless type and both the winding of its rotor and that of its stator are embedded in an impermeable resin. The driving unit comprises a reduction unit with an output shaft operating two roller travel systems mounted on opposite sides of the apparatus. Movement reversal means, consisting of a shaft extension oscillating between two different working positions, are arranged between the output shaft and said two travel systems.

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