Baths – closets – sinks – and spittoons – Pool type – With cleaning means
Patent
1981-11-09
1983-07-05
Artis, Henry K.
Baths, closets, sinks, and spittoons
Pool type
With cleaning means
134167R, 239 66, 239204, 4492, 4496, E04H 320, B08B 302, B05B 1510
Patent
active
043910050
ABSTRACT:
Apparatus for intermittently directing one or more streams of water across the inner surface of a swimming pool structure for cleaning the surface. A cylindrical retractable nozzle head actuated by fluid pressure moves to an active, extended position to expose nozzle passages therein when water under pressure is applied thereto. The nozzle passages are formed in diametrically and symmetrically disposed thickened wall regions of the nozzle head to provide a nozzle head that is balanced about its longitudinal axis. In certain embodiments of the invention, a pair of nozzle passages are formed in the thickened regions and some or all of the passages have destructible membranes blocking communication with the interior of the nozzle head, which membranes may be selectively drilled out at the time of installation of the apparatus. The nozzle head, which is preferably molded from plastic material, may contain a weight member for additional balance and to assist in retraction of the head to its inactive position.
REFERENCES:
patent: 1919244 (1933-07-01), Munz
patent: 3408006 (1968-10-01), Stanwood
patent: 3449772 (1969-06-01), Werner
patent: 3521304 (1970-07-01), Ghiz
patent: 3675252 (1972-07-01), Ghiz
patent: 4188673 (1980-02-01), Canter
patent: 4202499 (1980-05-01), Mathews
patent: 4212088 (1980-07-01), Goettl et al.
patent: 4271541 (1981-06-01), Mathews
patent: 4300246 (1981-11-01), Gould
patent: 4322860 (1982-04-01), Gould
Artis Henry K.
Ghiz George J.
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