Patent ID: 7372225
Filing Date: 2008-05-13
Classification: E05D,E05F,E05Y

Abstract:
1. An operator for moving a barrier between open and closed positions on spaced apart guide tracks, said barrier being operably connected to a counterbalance mechanism for at least partially balancing the weight of said barrier when moving between said positions, said operator comprising: an elongated flexible member operably connected at one end to said barrier at substantially a lower end thereof and an opposite end of said flexible member being operably connected to said barrier adjacent an upper end thereof; an operator support disposed generally above said barrier and adjacent one of said guide tracks; and a motor operably supported by said operator support and drivably connected to a drive mechanism drivably engaged with said flexible member for moving said barrier between open and closed positions, wherein said flexible member is disposed at least partially around at least one tensioning pulley to facilitate drivable engagement between said drive mechanism and said flexible member.