Patent ID: 8807195
Filing Date: 2014-08-19
Classification: E06B

Abstract:
1. A device with a curtain which can be rolled up and unrolled between a shut position and an open position, said curtain ( 1 ) having lateral edges and a first and a second face opposite to each other, the curtain comprising a belt ( 2 , 3 ) with a longitudinal direction on each of its faces, wherein each belt ( 2 , 3 ) has successive teeth ( 5 , 6 ) extending along said longitudinal direction, said belts ( 2 , 3 ) being situated opposite one another in such a way that they can mesh when the curtain ( 1 ) is being rolled up, wherein at least one of these belts ( 2 , 3 ) comprises teeth ( 5 , 6 ) having at least one recess ( 8 , 9 ) forming an undercut in which at least one protruding part ( 10 , 11 ) of the teeth ( 5 , 6 ) of the other belt ( 2 , 3 ) can engage in such a way that the two belts ( 2 , 3 ) can mesh and such that one of these belts ( 2 , 3 ) can push the other belt ( 2 , 3 ) in a longitudinal direction, wherein said protruding part ( 10 , 11 ) of each tooth ( 5 , 6 ) hangs over the recess ( 8 , 9 ) forming said undercut defined by said protruding part of said each tooth in the longitudinal direction of the belts ( 2 , 3 ).