Patent ID: 7100727

Claim:
Articulated vehicle traveling on the ground into a longitudinal direction, comprising: two chassis ( 1 , 2 ) linked with each other by an articulation ( 3 ) rotating around longitudinal axis (x′x), parallel to the traveling direction, both said chassis having their mid planes intersecting in articulation axis, respectively i) a first chassis ( 1 ) resting on the ground by the means of a first rolling part ( 13 ) and centered on a first median plane (P 1 ) perpendicular to the ground, and ii) a second chassis ( 2 ) resting on the ground by the means of a second rolling part ( 22 ), adjustable in relation to the traveling direction and centered on a second median plane (P 2 ), able to be inclined in relation to the ground by rotation around articulation axis x′x, and a removable locking device ( 30 , 6 ) of the articulation ( 3 ), comprising two parts ( 31 , 61 ) ( 33 , 64 ), integral in rotation, respectively of first and of second said chassis, and a removable locking device of articulation ( 3 ), comprising a pendulum type device ( 4 ) ( 62 ), controlling the integral rotation of said two parts, said pendulum type device ( 4 ) ( 62 ) being suspended to second chassis ( 2 ) and mounted oscillating in relation to the second median plane (P 2 ), between a median position unlocking the articulation, wherein the second median plane (P 2 ) is adjusted in relation to a vertical determined by a combination of gravitational and centrifugal forces, and a spaced position locking the articulation ( 3 ), at least, at standstill of vehicle, by inclination of second chassis ( 2 ) in relation to the vertical, wherein said second chassis comprises a device ( 5 ) so as to command the unlocking of the articulation, at least at start of vehicle, constituted of an auxiliary platform, integral in rotation with first chassis ( 1 ), fitted with two footboards ( 51 ) substantially located at same level above ground, on either side of articulation axis (x′x), each of said footboard constituting, on the side the vehicle is slanted, a support, for the driver of vehicle, so as to raise said second chassis ( 2 ), with return of pendulum ( 4 ) ( 62 ) to its articulation unlocking median position.