Heat retaining swimming pool cover
AssigneeCantar/Polyair Corporation
InventorChris Bartlett
Life of this patent
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Abstract
A heat retaining swimming pool cover (1) is floatable on pool water (2) in a swimming pool (3) and has a plastic upper film (5) for facing toward the atmosphere (6), a plastic lower film (8) for facing toward the pool water (2), sufficient spaced apart air pockets (10) configured into the lower film (8) for containing air such that the cover (1) is floatable on the pool water (2), and sealed land areas (11) between the air pockets (10) such that the upper and lower films (5,8) are sealed to each other. The lower film (8) contains an infrared absorbent effective amount of an infrared absorbent but which amount is insufficient to prevent sunlight (14) from substantially penetrating the lower film (8) and passing into the pool water (2).
Claims31
A method for providing a heat retaining swimming pool cover for floating disposition on pool water in a swimming pool, comprising:
- sealing land areas between air pockets in a lower film for facing toward the pool water to a plastic upper film for facing towards the atmosphere such that the upper film and lower film are sealed to each other sufficiently so that the air pockets contain sufficient air so that the pool cover is floatable on the pool water in a swimming pool, and wherein the lower film contains an effective amount of an I.R. absorbent but which amount is insufficient to prevent atmospheric sunlight from substantially penetrating the lower film and passing into the pool water.
A method for heating pool water in a swimming pool, comprising applying to the pool water, in a floating disposition a pool cover having a plastic upper film for facing towards the atmosphere, a plastic lower film for facing toward the pool water, sufficient spaced apart air pockets configured into the lower film for containing air such that the cover is floatable on the pool water, and sealed land areas between the air pockets such that the upper and lower films are sealed to each other, and wherein the lower film contains an effective amount of an I.R. absorbent but which amount is insufficient to prevent atmospheric sunlight from substantially penetrating the lower film and passing into the pool water.
Dependencies are inferred from the claim text.