Patent ID: 6698138
Filing Date: 2004-03-02
Classification: E05D,E05F,E05Y,Y10T

Abstract:
An adjustable pulley assembly for a suspended door, the adjustable pulley assembly comprising:a fixing plate adapted to be securely mounted on top of an upper frame of the suspended door; an adjusting seat mounted to the fixing plate, the adjusting seat including a first vertical plate having an upper end and a lower end, a top plate extending from the upper end of the first vertical plate along a direction transverse to the first vertical plate, and a bottom plate extending from the bottom end of the first vertical plate along a direction opposite to the extending direction of the top plate, the first vertical plate including a vertical slot, the top plate including a screw hole; a pulley seat securely attached to the adjusting seat to move therewith, the pulley seat including a second vertical plate and a top plate extending from an upper end of the second vertical plate along a direction transverse to the second vertical plate, the second vertical plate having a screw hole, the top plate of the pulley seat having a hole aligned with the screw hole of the top plate of the adjusting seat; a pulley including a bearing mounted therein, an axle extending through the pulley and extending through the screw hole of the vertical plate of the pulley seat and the vertical slot of the adjusting seat, with a nut engaged on a distal end of the axle, the pulley being adapted to be mounted on a guide rail of a track along which the suspended door moves; and an adjusting bolt extending through the hole of the top plate of the pulley seat and the screw hole of the top plate of the adjusting seat; wherein when the adjusting bolt is turned, the vertical slot of the first vertical plate of the adjusting seat allows relative movement between the top plate of the pulley seat and the top plate of the adjusting seat in the vertical direction, thereby changing a distance between the top plate of the pulley seat and the top plate of the adjusting seat.