Window guidance arrangement

摘要

A carrier member mounted on a door window is positioned between the first and second opposed facing spaced apart legs of a door mounted track. The carrier member has an axially extending cylindrical bore communicating between the track legs. First and second bearing balls are mounted within the cylindrical bore and roll against one another and respectively against the first and second track legs to provide low friction precision guided movement of the window between the open and closed positions. Tracks are preferably provided at both the front and rear of the window. One of the tracks extends vertically through the window opening. First and second carrier members and associated rolling balls are mounted on the window in vertically spaced relation and roll along semi-cylindrical grooves extending vertically along the track legs to define the path of rolling movement and support the window against pitching movement and against fore and aft movement relative the door.