Patent ID: 7562885

Claim:
Four-wheeled vehicle ( 1 ) with two steered front wheels ( 2 , 3 ) comprising a frame ( 13 ), handlebars ( 16 ), two rear wheels ( 4 , 5 ) and a front suspension group ( 6 ) that acts upon said two front wheels ( 2 , 3 ) characterized in that said front suspension group allows the roiling of the vehicle and comprising at least two shock absorbers ( 22 ), at least two horizontal cross members ( 7 , 8 ) comprising at least one lower cross member and one upper cross member connected through at least two hinges ( 9 , 9 ′, 10 , 10 ′) to said frame ( 13 ) and at least two vertical suspension elements ( 11 , 12 ) firmly connected to said at least two horizontal cross members ( 7 , 8 ) so as to form an articulated quadrilateral for the rolling of the vehicle ( 1 ), said horizontal cross members ( 7 , 8 ) are connected at their ends to said vertical suspension elements ( 11 , 12 ) through hinge elements ( 57 ) wherein said front suspension group ( 6 ) also comprises at least two cylindrical hinges ( 66 ) to connect connecting rods ( 60 ) to said shock absorbers ( 22 ) where said shock absorbers ( 22 ) are also connected to said middle of the upper cross member ( 7 ) through said hinge ( 9 ).