Fluid displacement device
AssigneeDry Planet Limited
InventorNigel McGowan
Life of this patent
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Abstract
A fluid displacement device (2) comprises a flexible plastics container (4). The container (4) is formed from a single sheet of PET/PE which is folded over to create a pocket, and heat sealed along the seams 8a,b,c formed by the edge of the sheet. The container (4) is substantially rectangular in shape, and measures approximately 130 mm by 200 mm. The container is placed in a toilet cistern and suspended above a bottom part thereof. Water flows into the flexible container (4) from the cistern (20) through the holes (6) and comes into contact with the water-swellable polymer. The water-swellable polymer absorbs the water and swells to approximately (400) times its original weight to displace approximately 500 ml water from the cistern (20).
Claims18
A fluid displacement device to displace a volume of fluid within a fluid tank, the device comprising retaining means to retain the device within the tank.
A retaining means for retaining a fluid displacement device within a fluid tank.
A method of displacing fluid in a fluid tank, the method comprising the steps of retaining a fluid displacement device within the fluid tank using a retaining means.
A kit for displacing fluid in a fluid tank comprising a fluid displacement device and a retaining means for retaining the fluid displacement device within a fluid tank.
Dependencies are inferred from the claim text.