Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Material level or thickness responsive
Reexamination Certificate
2011-03-22
2011-03-22
Drodge, Joseph W (Department: 1772)
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Material level or thickness responsive
C209S729000, C209S733000, C209S734000, C210S094000, C210S138000, C210S175000, C210S192000, C210S223000, C210S295000, C210S512200, C210S512300, C210S513000
Reexamination Certificate
active
07909990
ABSTRACT:
A filter device is made up of: a filter portion having a fluid outlet at its axis, and a fluid inlet in a position away from the axis, in which a fluid containing particles is supplied at a predetermined flow speed from the fluid inlet to cause a swirling, particles are moved outward in a centrifugal state and the fluid from which the particles are separated is discharged from the fluid outlet, and the particles separated by slowing down the swirling are allowed to sink; and a settlement portion in which the particles that settle in the filter portion are allowed to settle. Thus, a fluid containing particles is supplied at a predetermined flow speed to cause swirling, the particles are separated by a centrifugal force caused by the swirling and allowed to sink and settle, and the fluid from which the particles are separated is discharged. A large amount of particles can be allowed to settle and be reliably removed in a short time with this small-sized and simple device. The filter device does not clog, does not need washing and exchanging work and keeps the costs low.
REFERENCES:
patent: 2102525 (1937-12-01), Freeman
patent: 2931504 (1960-04-01), Troland
patent: 3235090 (1966-02-01), Bose et al.
patent: 3568847 (1971-03-01), Carr
patent: 3849246 (1974-11-01), Raymond et al.
patent: 3862041 (1975-01-01), Robinson
patent: 4437984 (1984-03-01), King et al.
patent: 4587024 (1986-05-01), Hayatdavoudi
patent: 4650584 (1987-03-01), Macierewicz
patent: 4729837 (1988-03-01), Henricson
patent: 6109451 (2000-08-01), Grimes
patent: 6355178 (2002-03-01), Couture et al.
patent: 36-6342 (1961-05-01), None
patent: 53-4379 (1978-01-01), None
patent: 60-139394 (1985-07-01), None
patent: 63-126051 (1988-08-01), None
patent: 64-43361 (1989-02-01), None
patent: 2001-137743 (2001-05-01), None
Nakamura Jun-ichi
Takahashi Kazuaki
Drodge Joseph W
Flynn ,Thiel, Boutell & Tanis, P.C.
Takahashi Co., Ltd.
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