Patent ID: 7686063

Claim:
A drapery system for moving a suspended drapery fabric comprising: an elongated track having belt channels and a drapery car channel; a drive belt received within the belt channels of the track; and a master car received within the drapery car channel of the track, the master car comprising a driven portion coupled to the drive belt and a non-driven portion adapted to be coupled to the drapery fabric, the driven portion and the non-driven portion comprising a plurality of vertically-oriented wheels adapted to roll through the drapery car channel, the master car comprising a spring having a snap adapted to be received in a snap-receiving structure, such that the driven portion is coupled to the non-driven portion, the non-driven portion operable to roll through the drapery car channel in response to movement of the drive belt to move the drapery fabric along a length of the track when the non-driven portion is coupled to the driven portion; wherein the non-driven portion is operable to be decoupled from the driven portion, such that the drapery fabric may be manually moved along the length of the track, the snap of the master car comprising a first segment and a second segment connected to the first segment, the first and second segments having respective slopes with respect to a horizontal axis of the track, the slope of the first segment having a greater magnitude than the slope of the second segment, such that the force required to decouple the driven and non-driven portions of the master car is greater than the force required to couple the portions together.