Baths – closets – sinks – and spittoons – Pool type – With cleaning means
Patent
1980-06-06
1981-11-17
Artis, Henry K.
Baths, closets, sinks, and spittoons
Pool type
With cleaning means
134167R, 134168R, E04H 320
Patent
active
043002463
ABSTRACT:
A cleaning head for connection at bottom surfaces of a swimming pool to an automatic pressure control system includes a chamber and a rotary expansion collar disposed in the chamber. The collar has relatively thin cylindrical walls and an inclined slot extending through the cylindrical wall, allowing the collar to expand in response to increased water pressure produced by the pressure control system. The slot is closed when the collar is relaxed and is opened in response to water being forced under high pressure into an interior portion of the chamber surrounded by the collar. Water ejected from the interior portion through the open slot causes the collar to rotate. As the water pressure increases, the collar expands further until its outside surfaces frictionally engage the chamber wall, stopping rotation of collar. As the water pressure is cycled between zero pressure and a high pressure, the directions of jets of water exhausted through the inclined slot are randomly varied, causing cleaning of a circular portion of the swimming pool surface located around the cleaning head.
REFERENCES:
patent: 3449772 (1969-06-01), Warner
patent: 3506489 (1970-04-01), Baker
patent: 3521304 (1970-07-01), Ghiz
patent: 4114206 (1978-09-01), Franc
Artis Henry K.
Shasta Industries, Inc.
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