Patent ID: 7036549

Claim:
Shutter device intended to close an opening ( 11 ) or other aperture and able to undergo a downwards and upwards movement, the shutter ( 1 ) having substantially continuous flexible lateral edges ( 5 , 6 ) that project with respect to the plane of the shutter ( 1 ) and that are running in guideways ( 7 , 8 ) mounted on a fixed support ( 9 ), means being provided, at least at the lower part of the opening ( 11 ) or other aperture, for allowing the lateral edges ( 5 , 6 ) to disengage from their guideways ( 7 , 8 ) when a certain tensile force transverse to the longitudinal direction of the guideways ( 7 , 8 ) is exerted on the lateral edges ( 5 , 6 ), reintroduction means being provided to engage the lateral edges ( 5 , 6 ) again in the upper part of the guideways ( 7 , 8 ) during the upwards movement of the shutter ( 1 ), whereby said reintroduction means comprise guide members ( 20 ) provided facing the guideways ( 7 , 8 ) so as to divert the edges ( 5 , 6 ) of the shutter ( 1 ) into the guideways ( 7 , 8 ) during the upwards movement of the shutter ( 1 ), wherein the guideways ( 7 , 8 ) are interrupted between the upper part of the guideways ( 7 , 8 ) and the lower part of the guideways ( 7 , 8 ) whereby the lower end of the upper part of the guideway ( 7 , 8 ) is mounted movable with respect to the lower part of the guideway ( 7 , 8 ) such that, during the upwards movement of the shutter ( 1 ) when the corresponding lateral edge ( 5 , 6 ) thereof is disengaged from the lower part of the guideway ( 7 , 8 ), said upper part moves as a result of the action, of the lateral edge of the shutter.