E - Fixed Constructions – 06 – B
Patent
E - Fixed Constructions
06
B
160/9
E06B 9/171 (2006.01) E06B 9/324 (2006.01)
Patent
CA 1146463
ABSTRACT OF THE DISCLOSURE A roller blind structure has an elongated tubular member which has end studs mounted for rotation and displacement in elongated openings in two spaced-apart brackets to be fixed to the sides of a window frame. Coaxially secured to the tubular member is a pulley. The roller blind screen is secured to the tubular member, and a cord for rotating the tubular member is secured to the hub of the pulley. The cord is wound on the pulley in a direction opposite to the direction in which the screen is wound in the roller. A tubular sleeve, having a downwardly-directed opening for the cord, has an axial projection sliding against an upper horizontal surface of the bracket to prevent the sleeve from rotating but to allow it to be displaced with the pulley. A guiding and locking device is provided at a vertical spacing below the sleeve and serves to guide the cord relative to the sleeve and to lock the cord in any desired position. For the latter purpose, it has a spring-biased locking arm. To the free end of the cord is secured a resilient knob and the guiding and locking device has an inclined end wall for cooperation with said knob to cause the latter to take an inclined position in its uppermost position. The lock arm may also have a resilient cord braking element. In the rolled-up position of the screen, the tubular member is spaced from the window frame to make room for the screen. During unrolling of the screen, the tubular member moves towards the window frame and the screen comes in contact with the window frame to provide effective light and heat shielding. The sleeve ensures proper cord winding on the pulley.
339996
Swensson Torsten
von Knorring Enar
Lesperance Pierre
Swensson Torsten
von Knorring Enar
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