Liquid purification or separation – Structural installation – Closed circulating system
Reexamination Certificate
2005-09-13
2005-09-13
Prince, Fred G. (Department: 1724)
Liquid purification or separation
Structural installation
Closed circulating system
C210S086000, C210S238000, C210S242100, C210S416200, C210S460000, C004S490000, C015S001700, C134S16800C
Reexamination Certificate
active
06942790
ABSTRACT:
An open-air filtration device cleans swimming pools and hot tubs in an efficient, reliable manner. An open-air filter with a suction chamber unit comprises two scrubbing brushes and an impeller powered by a motor drive. Water containing debris is pumped to a level above the swimming pool or hot tub surface. The debris containing water is discharged through a spout into a filter tube. A filter element associated with the filter tube, and open to atmosphere filters the debris containing water by gravitational forces solely. The spout and filter tube are, optionally, attached to a pole that manually propels the suction unit. They may alternatively be attached to a floating platform that floats on the water surface of the pool or hot tub. If filter efficiency decreases, the water level in the filter tube rises, indicating that the filter element must be replaced. A rise in water level is visually observed or detected automatically and communicated using a visible or audible alarm.
REFERENCES:
patent: 2646889 (1953-07-01), Dulak
patent: 3471884 (1969-10-01), Wright
patent: RE26741 (1969-12-01), Myers
patent: 3886616 (1975-06-01), Hayes
patent: 3979788 (1976-09-01), Strausak
patent: 4338697 (1982-07-01), Broadwater
patent: 4692956 (1987-09-01), Kassis
patent: 4786334 (1988-11-01), Nystrōm
patent: 5044034 (1991-09-01), Iannucci
patent: 5093950 (1992-03-01), Heier
patent: 5293659 (1994-03-01), Rief et al.
patent: 5351355 (1994-10-01), Chiniara
patent: 5435031 (1995-07-01), Minami et al.
patent: 5569371 (1996-10-01), Perling
patent: 5725761 (1998-03-01), Phillips
patent: 5842243 (1998-12-01), Horvath et al.
patent: 5915431 (1999-06-01), Doussan
patent: 5933899 (1999-08-01), Campbell et al.
patent: 5961822 (1999-10-01), Polimeni, Jr.
patent: 6039886 (2000-03-01), Henkin et al.
patent: 6155657 (2000-12-01), Erlich et al.
patent: 6199237 (2001-03-01), Budden
patent: 6473927 (2002-11-01), Sommer
patent: 2001/0050093 (2001-12-01), Porat
patent: 2003/0132152 (2003-07-01), Illingworth
patent: 2792021 (2000-10-01), None
Buff Ernest D.
Ernest D. Buff & Associates LLC
Narasimhan Dave
Prince Fred G.
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