Device with shutter winding about a drum
AssigneeDynaco International S.A.
InventorBenoit Coenraets
Life of this patent
Estimating the term…
Abstract
A shutter device co-operating with driving means for enabling the shutter (1) to be displaced between an open position and a closed position, this shutter (1) being guided by a guide track (4, 5) and being designed to close off a bay (6) or other opening. The device having a drum (8) about which the shutter (1) is wound when the latter is in the open position such that the shutter forms a roll (31) made up of turns formed by successive layers of the shutter (1). The shutter (1) can be unwound from this roll towards its closed position. The device further has confining means for preventing the turns from forming wrinkles as the shutter (1) is being displaced into the closed position and/or for preventing these turns from slipping relative to one another.
Claims21
Shutter device with a shutter (1) and with driving means for displacing the shutter (1) between an open position and a closed position and comprising a drum (8) about which the shutter (1) is wound into its open position, whereby, in this open position, the shutter forms a roll (31) made up of turns of successive layers of the shutter (1), and from which drum (8) the shutter (1) can be unwound into its closed position, wherein the shutter device comprises confining means comprising hooking means (11) for holding successively turns tight one against the other as the shutter (1) is displaced into its closed position, wherein the hooking means are extending along the length of the shutter (1) and wherein at least one pressing element is provided for applying a thrust force to the hooking means (11) for fixing the successive turns of the roll (31) one to the other, whereby said thrust force is applied along a direction that is substantial radial to the drum (8).
Dependencies are inferred from the claim text.