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    • 5. 发明公开
    • A screen-locking device for use in roll blinds
    • 用于滚动盲孔的屏幕锁定装置
    • EP0180832A3
    • 1987-05-13
    • EP85113248
    • 1985-10-18
    • TOSO KABUSHIKI KAISHA
    • Shoji, Yoshihiro
    • E06B09/209E06B09/204
    • E06B9/78E06B9/90E06B2009/905F16D49/02F16D67/02
    • A screen-locking device for use in roll blinds of the type having a fixed shaft (11), a screen-roll (15) rotatably fitted on the fixed shaft, a cord-pulley (20) rotatably mounted on the fixed shaft, the device comprising a brake drum (11b) formed on the fixed shaft, a coil spring (24) fitted around the broke drum, the cord-pulley having an opening (22) over the broke drum, the coil spring having the both ends (25, 26) thereof inserted into the opening and crossed in a V-shaped form when axially viewed, a sleeve (17) removably fixed to the screen-roll and rotatably mounted on the fixed shaft (11), a key (18) reversibly fined on the sleeve and formed with a radill £ inwardiy extending projection (19) on one side of the key. For use with a roll blind having no auxiliary spring-motor, the device produces a large braking force when the key is set one way in which the projection is in a space between the both ends (25, 26). On the other hand, for use with a roll blind with an auxiliary spring-motor (44) to balance the weight of the screen (30), the device produces a small braking force when the key is set the other way in which the projection is out of the space between the both ends.
    • 8. 发明公开
    • Apparatus for opening and closing industrial door
    • 打开和关闭工业门的装置
    • EP0222062A3
    • 1988-01-07
    • EP86110207
    • 1986-07-24
    • M & I DOOR SYSTEMS LIMITED
    • Taylor, Douglas B.
    • E06B09/204
    • E06B9/74E06B9/70Y10T74/19367
    • An operator for a rolling door having a curtain barrel shaft rotatable for actuating the door includes a drive gear adapted for connection to one end of the curtain barrel shaft and a second gear (66) adapted for connection to one end of an idler roller. The idler roller in use engages one surface of the door and extends horizontally across the top of the door opening. A third gear (70) is rotatably mounted in the region of the drive gear and the second gear (66) and an electric motor is provided to rotate this third gear (70). In one version of the invention there is a moveable fourth gear (82) in meshing engagement with the third gear (70) and driven thereby. The fourth gear (82) can be swung from a first position where it is in meshing engagement with the second gear (66) to a second position where it is in meshing engagement with the drive gear. A chain loop (46) connectable to the door is driven when the second gear and the idler roller rotate and it is provided to close the door even under pressure. In a second version, a floating clutch drive system employing an endless chain is employed to selectively drive either the shaft about which the door is rolled or the chain loop.