Abstract: The inventive door comprises two lateral posts each of which is provided with a slide (9) bounded by two wings (8), a transversal element connecting the top ends of the lateral posts, a flexible curtain (5) whose lateral edges are inserted into the slides (9) and means for winding said curtain (5) in the open door position. According to said invention, each slide (9) is provided with a sealing profile (7) comprising a bottom wall (10) and two lateral walls (11) which substentially form an U-shape. Each lateral wall (11) rests against the wing (8) adjacent thereto.

Abstract: The invention concerns a fast door, closing an opening provided in a partition, comprising a soft screen (21), means for lifting the screen including, among others, a winding shaft (2) fixed at the door lintel, and a strap (7) whereof one end is fixed to the winding shaft (2) and the other end is fixed to the screen lower edge (8). The invention is characterized in that the strap (7) passes through a tension sensor (6) comprising a mobile element having an opening wherein the strap (7) is engaged, the mobile element being maintained in a first so-called normal operating position by the strap (7), the latter being subjected to a normal operating tension, the mobile element tilting into a so-called abnormal operating position, when the strap (7) shows a tension lower than a predetermined threshold corresponding to an abnormal operation of the door.

Abstract: The inventive flexible curtain rapid door comprises a structure consisting of two posts and a transverse element for guiding a flexible curtain and electromechanical means supported by said structure for displacing the curtain between open and closed positions, wherein the flexible curtain (2) comprises a weight and sealing element (13). According to the invention, the door comprises obstacle detecting means which are carried at least partially by an reinforcing element, are adjacent to the weight and sealing element (13) and are disposed upstream thereof on the curtain closing path between the reinforcing element and the weight and sealing element (13) and said obstacle detecting means are integrated inside the lower part of the curtain (2).

Abstract: The inventive door comprises two lateral posts (2), a transversal caisson (3) connecting the top ends of the posts and a curtain (10) movable between the closing position thereof, wherein said curtain closes a void formed by posts (2) and caisson (3) and the opening position wherein said curtain is folded up under the caisson (3). According to the invention, said the curtain (10) consisting of two parallel screens (11a, 11b) defining the boundaries of an air cushion and suspended to the top area of the posts. Said curtain (10) comprises at least one lifting strap (20) connecting the lower part of the curtain (10) to a shaft (21) mounted on the caisson (3) and at least one transversal stiffening means built up on each screen (11a, 11b), the lateral edges of each screen (11a, 11b) are applied to the posts in such a way that a lateral surface tight contact is formed.

Abstract: In a goods-handling door, there is a bracket on either side of its top portion. The brackets serve to support the shaft for rolling up the door. The invention relates to a one-piece (molded) bracket offering various functions: guiding the curtain, fixing various accessories, thereby ensuring structural precision and easy maintenance.

Abstract: An upright for a goods-handling door, said upright including a slideway (1) and being formed in one piece by extrusion or in two mutually snap-fastenable pieces. The upright includes a plane surface (14F) serving to be placed against a wall, so as to position the door and the slideway appropriately, so that space is left on either side of the door for receiving the curtain if it comes out of the slideway.

Abstract: A safety and protection device for a raisable-curtain goods-handling door (1) has a flexible curtain including a single sheet fitted with at least one raising strap (10) disposed against the outside of the curtain, the device having an apron (7) placed against the curtain on the same face of the curtain as the straps, to cover the door from the vicinity of its bottom up to a height that is at least sufficient to provide the desired type of protection, and over a width that is at least sufficient to cover the straps, the apron being capable of being fixed to the curtain in such a manner as to avoid impeding the movements of the strap.

Abstract: A goods-handling door for opening and closing a bay in a wall, the door including a flexible curtain (1), said bay being closed off when the curtain is deployed, and open when the curtain is gathered up on an edge of the bay, the door including a rolling-up shaft on said edge of the bay for receiving said curtain, or straps serving to displace said curtain by folding it up, the rolling-up shaft being rotated by an electric motor, said curtain having an edge fixed to said shaft or in the vicinity of said shaft, and a displaceable free opposite edge, said door being characterized in that it includes a safety system including firstly at least one elongate element such as a strap that can be rolled up with the curtain or with the straps on said rolling-up shaft while one end of said strap is fixed substantially to the free edge of the curtain, and secondly signal-emitting means for emitting a signal when the tension of the strap (10) drops below a predetermined threshold.

Abstract: A fast-opening and fast-closing goods-handling door for allowing vehicles to pass therethrough includes a foldable or rollable flexible curtain, the edges of which are guided in respective slideways, and which are retained therein by means of retaining carriages guided by rails received in the slideways. The carriages are not able to leave the rails. The goods-handling door is further characterized in that it includes a coupling device for coupling the curtain to the carriages, and at least one stress-distribution device for distributing the stresses exerted on the edges of the curtain by the carriages when the door is subjected to detrimental forces.

Abstract: A goods-handling door for closing or opening a bay formed in a wall, said door comprising: a raisable curtain (3) capable of being collected together at the top of the door; a vertical slideway (5) on either side of the curtain, each slideway being suitable for receiving a respective side edge of the curtain and having a face placed against the wall at the edge of the bay, the side edges of the curtain being adapted to slide in said side vertical slideways to hold the curtain substantially in the plane of the door; and mechanical means for operating the door, the mechanical means comprising a shaft (4) disposed at the top of the door for winding up the curtain or curtain-raising straps, a motor (104) for driving said shaft, an end-of-stroke device (105), and control means (106), said door being characterized in that each slideway is fixed in position by disengageable means (9) to hold the slideway in the plane of the door during normal operation thereof while allowing the slideway to leave its location when s

Abstract: A safety device used in case of rupture of a rotary shaft for preventing the shaft from rotating and for preventing broken portions thereof from falling, includes at least one safety element placed so as to retain the shaft to prevent it from falling. The peripheral surface of the shaft and a facing surface of the safety element are provided with mating devices that cooperate to prevent the shaft from rotating when a portion of the shaft is retained by said safety element due to the shaft rupturing. The device is particularly suitable for use with a shaft that winds up lifting straps for a raisable curtain or that winds up the curtain itself.

Abstract: A fast-opening and fast-closing goods-handling door for allowing vehicles to pass therethrough includes a foldable or rollable flexible curtain, the edges of which are guided in respective slideways, and which are retained therein by means of retaining carriages guided by rails received in the slideways. According to one aspect of the goods-handling door, the carriages are able to leave the rails. The goods-handling door is further characterized in that it includes a coupling device for coupling the curtain to the carriages, and at least one stress-distribution device for distributing the stresses exerted on the edges of the curtain by the carriages when the door is subjected to detrimental forces.

Abstract: A raisable goods-handling door of the type includes a flexible curtain capable of being wound up or of being folded up in the top portion of the door, said curtain being reinforced by at least one reinforcing or loading bar, the door being wherein the bar is made up of two half-bars that are disposed at the same level on the two faces of the curtain and, clamping provided so that the two edges of each half-bar are pressed against the curtain in sealed manner, thereby preventing dust or dirt from penetrating between either half-bar and the corresponding face of the curtain.

Abstract: A raisable-curtain door for closing a door-bay through a wall between two volumes of air maintained at different temperatures includes two vertical side uprights, each of which forms a slideway delimited by two vertical edges and a raisable curtain having side portions that slide in the slideways. Each of the side uprights includes two vertical metal bars forming respective edges of the slideway, which bars are separated from each other so as to define the associated slideway over substantially the entire height of the upright. A first of the vertical bars is located closer to the wall than the second of the vertical bars. The first bar is in draft-proof contact with the wall and in substantially draft-proof contact with the curtain over the entire height of the curtain when the curtain is down.

Abstract: A goods-handling door having a retractable curtain includes a flexible curtain that is rollable or foldable by use of a rotary winding shaft. In the door, the curtain is provided, on at least one face, with at least one flexible strip extending perpendicular to the shaft and forming excess thickness on the curtain. When the curtain is rolled or folded in its retracted position, the separation strip rolls or folds onto itself to hold the layers of the curtain apart from one another.

Abstract: A balancing apparatus for a raisable-curtain goods-handling door includes a shaft on which a curtain is wound up or on which curtain-raising straps are wound up. The shaft supports two drums onto which are wound belts from which two counterweights are suspended. The "long" belt from which a "long" counterweight of "long" mass M.sub.6 is suspended has a length that corresponds to the full stroke of the curtain while the "short" belt of the "short" other counterweight of "short" mass M.sub.5 is shorter and is fastened on the corresponding drum in such a manner as to enable it to wind in either direction on the drum.

Abstract: A goods-handling door having a raisable curtain for closing a door-bay, the door including two rigid side uprights disposed on either side of the door-bay, each upright including a slideway, the door further including a curtain disposed between the uprights, the vertical edges of the curtain sliding in respective ones of the slideways, each upright including a rigid web that faces said door-bay, each slideway including a vertical slot formed through said rigid web, said vertical slot being delimited by two edges, wherein each slideway further includes a flexible draft-proofing cloth interconnecting its two edges over substantially the entire height of the slot, thereby delimiting a vertical pocket on its side opposite from the door-bay, which pocket is designed to receive an edge of the curtain, said edge bearing flexibly against the bottom of the pocket, which bottom has sufficient clearance to absorb movements and deformations of the edge of the curtain.

Abstract: A goods-handling door for separating different spaces in factories or warehouses includes a curtain that can be raised by being wound up or by being folded up concertina-like. The curtain is insulating both with respect to heat and with respect to noise, while being transparent so that one vehicle can be seen by another if they approach the door from opposite sides. The door includes two airtight flexible skins that lie parallel to each other and that sandwich spreaders between them. The spreaders are spaced apart and define intermediate spaces between the two skins. The spaces are filled with air, which provides the required insulation. Since the two skins are transparent, the door is transparent in the vicinity of the intermediate spaces.

Abstract: A vertically-opening door installation which is exposed to cold on one side includes a vertically-opening flexible curtain (6) and two risers to guide the respective side edges of the curtain. Each riser includes a lining (12) made of a material which is a poor conductor of heat and which lines the inside of the channel section bar, and at least one longitudinally-extending cavity (14) providing a cushion of air between the outside surface of the channel section bar and the inside surface of its lining. The inside surface of lining (12) is smooth. At least one of the longitudinally-extending cavities (14) may include electrical heater resistance (15) or similar heating devices. The riser is provided to prevent frost and ice from forming around the side edges of the curtain of a goods-handling door which is exposed to the cold.

Abstract: A lifting curtain industrial door including a flexible curtain capable of being gathered together at the top of the door by being rolled up or folded, and of being lowered in a plane between two vertical side uprights each including a slideway, each slideway having a guide wall on either side of the plane of the curtain, the curtain having lateral portions which slide in said slideways, said lateral portions being adapted to escape from the slideways in the event of an abnormal transverse force, wherein the wall of the upright including the slideway includes at least one moving wall element capable of deforming elastically so as to form a path enabling a lateral portion of the curtain to pass from the outside to the inside of the slideway, but not in the opposite direction.