Automobile door window glass system

Claim 1

A motor vehicle door window glass system comprising: a door window glass which is formed in the shape of composite spindle surface wherein the composited spindle surface is formed by smoothly connecting together more than three spindle surfaces in a vertical direction such that the radius of curvature along any vertical section of the window glass decrease in downwardly direction, said window glass further being formed such that any horizontal section of said glass has a curvature which roughly corresponds to the curvature of the door panel on the exterior side of the belt line; a raising and lowering device which raises and lowers the door window glass so that it moves into and out of a space between a door outer panel and a door inner panel; and a guide means which guides said door window glass such that the glass successively rotates about a different central axis of the respective spindle surface which constitutes the composite spindle surface of the door window glass when the raising and lowering device is operated, said guide mechanism having a shape in vertical cross-section which is roughly an inversion of the shape of the vertical section of said door window glass at the point which said guide mechanism is installed.