Baths – closets – sinks – and spittoons – Pool type – Accessory
Patent
1993-03-08
1994-03-15
Cusick, Ernest G.
Baths, closets, sinks, and spittoons
Pool type
Accessory
4499, E04H 410
Patent
active
052936520
ABSTRACT:
A pool winterizing system including a pool cover-sheet and a housing that is disposed beneath the periphery of the cover-sheet and in communication with the environment exterior to the cover-sheet. The housing defines an inlet duct and an outlet duct, each of which provides an independent air-flow path between the environment exterior to the cover-sheet and an inflation chamber selectively defined between the cover-sheet and the pool. A blower is disposed within the housing in the inlet duct and provides for inflation of the pool cover-sheet. A flap is hingedly attached to the housing above the outlet of the outlet duct and is biased toward a position in which it covers the outlet duct outlet so as to control the pressure to which the pool cover-sheet is inflated. Operation of the blower can be controlled by a light sensitive switch that "observes" the environment exterior the cover-sheet and, in conjunction with a circuit, causes the blower to operate when it is dark and causes the blower not to operate when it is light. The pool winterizing system further includes a heating system that operates when the temperature drops below a predetermined level.
REFERENCES:
patent: 3353309 (1967-11-01), Kwake
patent: 3810262 (1974-05-01), Strand
patent: 3918221 (1975-11-01), Benjamin
patent: 4048678 (1977-09-01), Chillino
patent: 4050853 (1977-09-01), Pereyra
patent: 4601072 (1986-07-01), Aine
patent: 4825479 (1989-05-01), Bonneau
Cusick Ernest G.
Eloshway Charles R.
Isaf Louis T.
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