Patent ID: 6470523
Filing Date: 2002-10-29
Classification: A61G,Y10S

Abstract:
A foldaway ramp for the access of disabled people's wheelchairs and children's pushchairs aboard vehicles (B) with a low slung floor (P) comprising:a supporting structure (2) embedded within a recess (H) provided under said vehicle (B) floor (P), a mobile unit (6) movable mounted in said recess, a platform (3) connected to said mobile unit and displaceable between a retracted position parallel to the vehicle (B) floor (P), and an extended position, with respect to said supporting structure (2), said platform (3) having a front end (11) and a rear end (19), electric actuator control means (36) for moving said mobile unit and said platform (3) between said retracted position and said extended position, and cam means (8, 27) for controlling slant of said platform (3) during the final phase of its displacement towards the extended position from a position parallel to said floor (P) to a downwardly slanted position where the front end (11) of the platform (3) rests on the ground (G), and the return of said platform to said position in which it is parallel to the floor (P) during the initial phase of its displacement towards said retracted position, by effect respectively of raising and lowering the rear side (19) of said platform (3) operated by said cam means (8, 27), wherein said cam means comprises: upwardly slanted sliding surfaces (8) arranged adjacent a rear edge (9) of said supporting structure (2), an elongated element having a curved cross-section articulated at opposite ends to opposite sides of said platform and extending upwardly along said rear end thereof and complementary elements (26, 27) connected to opposite ends of said elongated element and articulated to said mobile unit, said complementary elements having a curved profile complementary to said upwardly slanted sliding surfaces and disposed in sliding contact with said upwardly slanting sliding surfaces to move said platform to and from said downwardly slanting position.