PORTABLE FLUID TANK AND METHOD OF MAKING SAME

A portable fluid tank made from a flexible accordion duct tube and a method of make same is disclosed. The method comprises cutting a length of impermeable flexible accordion duct hose; attaching a cap to each end of the length of hose, at least one cap having a coupling for receiving a smaller tube in sealed engagement; and sealing the caps to the hose.

TECHNICAL FIELD

The present disclosure relates to a portable fluid tank.

BACKGROUND

Portable water tanks are used by municipal and wild land fire-fighters in areas where fire hydrants are not available as a reserve supply of water from which tankers can refill their tanks. The potable water tanks are filled from firetrucks, lakes or streams.

One existing type of portable water tank is an unsupported or onion tank, an example of which is shown inFIGS. 1 and 2. As can be seen inFIGS. 1andFIG. 2, a problem with this type of tank is that it must be on a level surface or water will spill out of the lower side of the tank.

Another existing type of portable water tank is a framed tank (shown inFIG. 3). This type of tank can be heavy due to the extra weight of the frame and difficult for one person to set up. Usually, the frame needs to be assembled once the site for the tank is chosen. The sites has to be level and thus, these tanks are often set up on road which can in some cases block the roadway. Fitting all of the components of the frame together best done with at least three people. The set up can also be time consuming.

Hard shell portable fluid tanks also exist and examples are shown inFIGS. 4 and 5. These can be very heavy and are generally left on the vehicle used to transport them as they are difficult to manoeuvre.

SUMMARY

In one aspect, there is provided a method of making a portable fluid tank, the method comprising: cutting a length of water-proof flexible accordion duct hose; attaching a cap to each end of the length of hose, at least one cap having a coupling for receiving a smaller tube in sealed engagement; and sealing the caps to the hose.

DETAILED DESCRIPTION

To the accomplishment of the foregoing and related ends, certain illustrative aspects are described herein in connection with the following description and the annexed drawings. These aspects are indicative of the various ways in which the principles disclosed herein can be practiced. Other advantages and novel features will become apparent from the following detailed description when considered in conjunction with the drawings.

An improved portable water tank and method of making the tank has been developed. Referring toFIG. 7, the portable fluid tank200comprises an impermeable flexible accordion tube210with sealed at each end with a cap222and224. At least one cap224has a coupling230(shown inFIG. 7) to which a tube can be attached. The caps224can be any shape provided they seal the end of the tube210. InFIG. 6square caps are shown andFIG. 6is an example of a round cap. In some embodiments, there is a coupling230in each cap and in still other embodiments the at least one cap224has more than one coupling. The coupling is used to fill the tank or to take water out of the tank, for example to fill the tanks of a pumper fire truck, a lake, or a stream. In some embodiments, the coupling comprises a valve231(shown inFIG. 8). In some embodiments, the accordion tube210is water-proof. In some embodiments the accordion tub is fire-retardant.

In the embodiment of the cap224shown inFIG. 8, a viewing window234is added to permit a user to see the water level inside the tank. This embodiment also shows a second coupling232. With two couplings, one can be used for filling the tank and the other can be used for pumping water out of the tank.

In another embodiment250, only one end252is sealed with a cap224. An example of an open-ended portable fluid tank250is shownFIGS. 9 and 10. InFIGS. 9 and 10, the other end254is bent upward when in use such that the opening is facing upward. InFIG. 9, a rod256can be used to curve the open end upward. In the embodiment shown inFIG. 10, a curved frame1000is used to hold the open end upward. The frame shown comprises two upwardly bent arms with hooks at the top to hold the lip of the opening in the accordion tube. Other configurations of the frame are possible. Any mechanical tip-up device that can hold the open end reasonably horizontal can be used. In these embodiments, the open end can be used to easily fill the tank or to empty the tank with suction.

The tube can be any accordion tube as long as it is water proof. One non-limiting example is accordion ducting. Non-limiting examples of material that can be used for tube are polyurethane, PVC, Neoprene cover fabric, thermoplastic, and metal. Commercially available tubes that can be used include but are not limited to Schauenburg™ Flexible Ducting. In some embodiments, the tube can be compressed or extended lengthwise. This embodiment of the portable water tank can be transported in a smaller compressed form that can be transported in a small pick-up truck as shown inFIGS. 11 and 12or even in a backpack1300as shown inFIGS. 13 and 14and expanded on location to a larger volume when needed to be filled with water.

The length and diameter of the tube determine the volume of water that the tank can hold.FIG. 15is a table that shows the approximate volume for a variety of non-limiting sizes. In the examples shown, the hoses have diameters of 24, 30 or 36 inches.

In some embodiments, the tube is flexible in all directions. The flexibility and the fact that the tank is not open at the top means that it does not have be used on level ground and it can be bent if the available space cannot accommodate the full length of the tank. The disclosed tank can be used in ditches, on trails, on roadways and on uneven ground.

The caps can be made of wood, metal (such as but not limited to aluminum), plastic, rubber or any suitable material. They can be round, oblong, square or rectangular. They can include a gasket for creating seal with the tube. They can be attached using adhesive or other suitable means, such as with a ratchet style or compression strap. In another embodiment a cloth cap is used. It can be glued or welded in place.

The couplings can be threaded couplings. In some embodiments, the couplings are chosen to mate with the couplings used by the regional fire department. For example National Fine or Course fittings can be used.

A method of making a portable fluid tank according to the present disclosure comprises cutting a length of water-proof flexible accordion tube; attaching a cap to each end of the length of hose, at least one cap having a coupling for receiving a smaller tube in sealed engagement; and sealing the caps to the tube.

While the portable fluid tanks described herein is primarily described for use by firefighters to fill fire tankers or another fire pump, it is to be understood that it can be used in any situation where a portable supply of water or any liquid compatible with the material used in the tank is required. The portable fluid tank disclosed herein can be filled with water from a body of water, such as a river or lake, or from a water-tank on a truck. The portable fluid tank can be used anywhere where water is required on a temporary basis such but not limited to firefighting (such as but not limited to urban, rural or railway firefighting), construction zones, agricultural areas, and remote communities or cottages. The tank can be used by drilling companies to store water required for cooling or lubrication. It is also possible that the fluid tank can be used for other fluids such as pesticides, fertilizers and fuels so long as the materials used for the tube and caps are compatible with the fluid stored.

The portable fluid tank can also be used in lieu of sand bags as a dike or dam to support the banks of a body of water, such as a river or lake, in order to contain the body of water in flood situations. The portable water tank can also be used to redirect water from a stream or river. Another use is to contain spills such as oil spills.

In some embodiments, the tank can be filled partially with sand or other solid material and partially with water. This will help prevent it from moving around especially when being used as a dike.

In some embodiments, an empty portable fluid tank can be used in conjunction with a light source (such as a flashlight, spotlight or floodlight) that is shone into one of the openings in one end of the tank. When a light is shone into the tank, the tank becomes a long illuminated tube. This can be used to mark off an emergency site.

The portable tank disclosed herein has many advantage, such as but not limited to:less labour is required to transport, set up and use the disclosed tank than with existing tanksthe tank can be readjusted in usethe tank is versatile and can be installed in most locationsdoes not need to be on a roadway which can block trafficthe tank takes up less space when empty than existing tanksthe tank is lighter than existing tanks.