E - Fixed Constructions – 04 – H
Patent
E - Fixed Constructions
04
H
E04H 4/10 (2006.01)
Patent
CA 2417649
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).
Cantar/polyair Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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