Patent ID: 8091284

Claim:
Glass supporting assembly for a motor vehicle door with an unframed upper edge; the assembly comprising: a fixed structure; a frame comprising: a) at least one guide to support a glass and make the glass slide between a raised position and a lowered position, and b) an upper portion connectable to said door in such a way as to make said frame tiltable in relation to said fixed structure about a substantially horizontal axis of adjustment; a slot obtained in one of either said fixed structure or said frame and elongated in a tangential direction with respect to the axis of adjustment; a pin carried by the other of either said fixed structure or said frame, with an axis orthogonal to said tangential direction and slidable in said slot; and locking means to lock said frame in relation to said fixed structure; wherein said pin is rotatable about its own axis in relation to said fixed structure and said frame, and wherein said pin comprises a positioning device that converts the motion from rotational to translational to position said pin along said slot in response to a rotation of said pin about the axis of said pin; and wherein said positioning device comprises: a cam fixed in relation to said pin, resting on a plane orthogonal to the axis of said pin, and defining a path with variable distance from the axis of said pin, and a tappet engaging said cam and carried by the same component in which said slot is obtained.