Patent ID: 6886205

Claim:
A self-propelled rolling apparatus for cleaning a submerged surface, comprising in combination: a rigid transverse motor housing ( 1 ) enclosing at least one electric motor ( 70 , 83 ) and having at least one drive shaft, called the driving shaft ( 2 ), for driving at least one running member ( 13 , 14 ), and at least one drive shaft ( 71 ), called pumping shaft ( 71 ), for driving a pumping member ( 3 ), these drive shafts ( 2 , 71 ) emerging outside the housing ( 1 ), two lateral flanges ( 6 ) rigidly fixed on each side of the motor housing ( 1 ) and extending longitudinally forwards and rearwards of the motor housing ( 1 ) in order to form a rigid, generally H-shaped frame ( 72 ), at least one of the flanges ( 6 ) bearing means ( 48 , 49 , 57 ) for transmission of the driving movement between a driving shaft ( 2 ) projecting laterally from the motor housing ( 1 ) and at least one running member ( 13 , 14 ) having a transverse axis of rotation extending between the two flanges ( 6 ) and guided by each flange ( 6 ), a front transverse wall ( 9 ) extending at the front of the motor housing ( 1 ) and between the two flanges ( 6 ) being demountably fixed to the said frame ( 72 ), the front transverse wall ( 9 ) and rear transverse wall ( 10 ) extending at a distance from the motor housing ( 1 ) in order to provide a passage for the water, and to form, between them and the lateral flanges ( 6 ), a bottom opening under the motor housing ( 1 ), a base ( 11 ) provided with water inlets ( 66 ) and adapted to close the said bottom opening, and a top hood ( 5 ) fixed to the frame ( 72 ) and covering the transverse walls ( 9 , 10 ), the flanges ( 6 ) and the motor housing ( 1 ), this hood ( 5 ) being provided with a top orifice ( 4 ) for water evacuation, in order to provide a unidirectional hydraulic circuit from the inlets ( 66 ) of the base ( 11 ), at the front and rear between the transverse walls ( 9 , 10 ) and the motor housing ( 1 ) and between the flanges ( 6 ), and up to the top orifice ( 4 ) of the hood ( 5 ).