Baths – closets – sinks – and spittoons – Pool type – Accessory
Patent
1981-07-07
1988-01-05
Phillips, Charles E.
Baths, closets, sinks, and spittoons
Pool type
Accessory
E04H 319
Patent
active
047166037
ABSTRACT:
The cover for a swimming pool has a side facing the water and an opposite side facing away. The cover defines an elongated cavity having a single flooding opening facing the water and arranged at one end of the cavity for flooding the pool, the cavity having a venting port at an end thereof opposite to the one end having the flooding opening. A vent valve in the port can close the port and a connection to a source of gas under pressure leads to the cavity for supplying the gas under pressure to the cavity to displace the water in the cavity. The mass of the cover exceeds that of the displaced water in case the cavity or cavities are flooded.
REFERENCES:
patent: 3039453 (1952-06-01), Andrassy
patent: 3184763 (1965-05-01), Kennedy
patent: 3242503 (1966-03-01), Russo
patent: 3423768 (1969-01-01), Glenn
patent: 3813704 (1974-06-01), Troiano
patent: 3927427 (1975-12-01), Aine
patent: 4151617 (1979-05-01), Kinzel
patent: 4229843 (1980-10-01), Belanger
patent: 4364131 (1982-12-01), Clerk
Kelman Kurt
Phillips Charles E.
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