Following invention describes a device to temperarily stop liquid medium from flooding non wanted areas. The invention is primarily expected to be used as flood protection against water.

Background to the invention The background to the invention is the need for a device that is easy to store, transport and put up and temporarily can stop liquids from flooding non wanted areas.

Technical problem To find a technical solution that is easy to store, transport and fast to put up which temporarily can be used to stop a liquid from reaching non wanted areas or making it possible to collect such a liquid. Example to different areas where this invention can be used is as protection against flooded water or for collection of enviroment damaging licquids. Solving this task needs a device that, among others, at the same time can be tight and withstand the licquid pressure forces.

State of developement.

Known solutions use methods where anchoring are build up on the dry side supporting some kind of licquid tight fabric that prevents the licquid from penetrating. The most known and used method is probably that used against flooded water where sand bags are used as support/ counterforce together with a watertight fabric on the flooded side.

Solutions which partly look like this innovation are described in PCT-aplication nr. WO 00 79062 Al and in DE 19807640 Al. Beside those following patents can be mentioned US 6, 126, 362, US 5,040, 919, US 5,984, 577, US 5,645, 373, US 5,785, 455 and SE C2 505394.

Mobile flood protection systems used today demand enourmus efforts of transportations and people and a lot of time to put up. Therefore also costs are high.

Purpose of this invention and it's most significant identification.

The purpose of this innovation is to present a system which is easy to store, transport and put up and meets above needs. The time between the device leaves it's depot until it is in operation is also short and demands a minimum of transport efforts and personal. It is easy to dismantle and possible to reuse. Besides that it leaves little affect on the enviroment where it has been used.

The system is recognised by consisting of only a few number of separate parts and has very low weight. As barrier is used a fabric which is non penetrateable for the actual licquid. The fabric has floating bodies sewed in or fastened to the fabric's upper border in such a way that they are lifted by the licquid and pulling the fabric upwards by rising licquid level. The floating bodies can bee flexible spaces filled with air or gas at mounting of the barrier or solid bodies of low density.

The barrier's lower part is placed flat on the ground towards the wet side and sealed off against the ground by a special flexible fabric with a integrated sink border line. The sealing is completed by the licquid that comes in on top and presses the barrier sealing against the ground.

The fabric's width in barrier cross section is large enough to build a significant concave shape when the flood rises.

As reaction force to the licquid pressure acting on the barrier in horisontal line can be used ropes, webs, wires etc. attatched to the barrier and anchored to the ground on the flooded side. As licquid rises and pressure on the barrier increases tension forcres are created in those ropes, webs, wires etc. balancing the horisontal pressure.

Alternative anchoring of the barrier can be made with help of poles either on the flooded or dry side. When poles are used on the dry side they are completed with a lever arm. These solutions demands less space across the barrier where it is put up. Of course a combination of all anchoring methods can be used.

To use the lifting capacity of the floating bodies maximal the barrier can be completed by a device protecting waves from spilling over the barrier. The device is based on same principals as the barrier besides it is attatched to the barrier. With this device the floating bodies whole deplacement can be used and a higher level dammed.

As the invention can be described as a construction element it can also be used to build basins and channels of different shapes.

Description of the invention.

With support of figures 1-8 a device named flood protection system will be described Figure 1 shows the device folded and rolled when it is stored.

Figure 2 shows the device from view obliquely above rolled out and unfolded before floating bodies have beeen filled.

Figure 3 shows the device folded to its ready position with filled floating bodies.

Figure 4 shows a cross section of the barrier when the licquid has reached the damm and the device has been activated. Here anchoring is shown only on the flooded side and only with ropes.

Figure 5 shows a cross section of the barrier when the licquid has reached the damm and the device has been activated. Here anchoring is shown only on the flooded side with a combination of pole and rope giving a less need for space cross the barrier.

Figure 6 shows a cross section of the barrier when the licquid has reached the dam and the device has been activated. Here anchoring is shown only on the dry side with pole and lever arm.

Figure 7 shows in a cross section how different segments of the barrier are joined.

Figure 8 shows a part of the joint seen from aside.

Figure 1 shows the device when it is stored. Here it is folded together and rolled which is to prefer. As an example can be mentioned that the device weighs approx. 2,5 kg per running meter for 1 m dam height. The barrier is produced in segments which are possible to join. The segments can bee of different length and height.

Figure 2 shows an example of the device rolled out and unfolded. Shown is the side in contact with the dammed liquid. Here can be recognised the barrier fabric (1) with its anchoring points (2) attatched to reinforcements (3) across the barrier fabric's full width. Besides can bee seen the flexible sealing fabric (4) with its sink line (5) along the border with a density larger then the licquid to bee dammed. The sink line runs along the whole length of the barrier.

At the barrier fabric's other border spaces (6) are seen wherein separate floating bodies (7) are placed. Those can consist of flexible gastight cushions with vents (8) allowing filling and evacuating of gas altarnitive air. The cushions are fixed to the fabric when they are filled.

The arrow (9) shows how the fabric are folded after the cushions have been filled to give the barrier right geometry before anchoring.

Figure 3 shows the barrier with filled floating cushions folded to ready position before anchoring. The arrow (10) shows the flood direction of the licquid to be dammed. Here it is obvious the importance of the fabric's extension against the dry side behind the floating cushions.

This to achieve the"sack shape"when the licquid enters the barrier and thereby limiting the need of lifting force from the floating bodies.

Figure 4 shows a cross section of activated barrier with anchoring at the flooded side only with lines. Here is marked the floating bodie 7, the barrier fabric 1, lower ground anchoring (11), upper ground anchoring (12) and upper anchoring line (13). Further is marked the sealing fabric's border sink line 5 the ground (14) and the licquid to be dammed (15). Note the concave shape of the barrier fabric giving optimal use of lifting capacity for the floating cushion.

Figure 5 shows a similar cross section as fig. 4 with upper anchoring 12 exchanged by a pole (16) allowing less need of space cross the barrier.

Figure 6 shows a cross section with upper anchoring on the dry side. It consist of a pole (17) and a lever arm (18).

Figure 7 shows a cross section of a joint between two segments of the barrier. It consists of a double labyrinth. Each segment end has a flap, approx. 50 cm long, which is intruded between the fabric 1 and the flap on the opposite segment. The flap ends can be fixed (19) with for example a burdock ribbon running over the total width of the barrier.

Outside the flaps the barrier segments are fixed by alternately eyes (20) approx. 20 cm long through which a line or web (21) is intruded across the full width of the barrier. The fixing of the flaps means that creases are avoided and the joint is"stiffened"giving a tight sealing. The eyes and the lines give the strengt of the joint.

Figure 8 shows a part of above joint seen from aside. Here can be seen the flap fixings 19, the eyes 20 and the line 21.