Automatic swimming pool cover
AssigneeFrench Masterpieces, Incorporated
InventorRoger J. Batstone
Life of this patent
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Abstract
An automatic cover for a liquid storage container and a method of control corresponding thereto including a cover disposed within the container, a membrane connected to a portion of the storage container and connected along a peripheral portion of the membrane to the cover, the membrane and the cover separating the storage container into a liquid storage compartment and a liquid balancing compartment, a pressurized mechanism connected to the peripheral portion of the membrane for controlling the shape and dimension of the cover and a member for feeding balancing liquid to and for withdrawing balancing liquid from the liquid balancing compartment in such a manner that hydrostatic pressure of the storage container is maintained within any predetermined range.
Claims2
A method for containing and controlling the hydrostatic pressure on a liquid storage container having a cover, a membrane connected to a portion of said storage container, and a control member interconnecting said cover and said membrane which comprises:
- feeding liquid to and discharging liquid from opposite sides of said cover and membrane which form a liquid storage compartment and a liquid balancing compartment;
- pressurizing said control member interconnecting said cover and said membrane so as to control the shape and dimension of said cover;
- and
- controlling the feeding of liquid to and discharge of liquid from said liquid balancing compartment so as to maintain hydrostatic pressure on said storage container within a predetermined range of values.
Dependencies are inferred from the claim text.