Liquid purification or separation – Flow – fluid pressure or material level – responsive – Filter cleaning
Reexamination Certificate
2007-08-21
2010-10-05
Cecil, Terry K (Department: 1797)
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Filter cleaning
C210S108000, C210S333100, C210S413000
Reexamination Certificate
active
07807050
ABSTRACT:
The present invention relates to stationary cloth media filtration systems and devices, as well as processes and devices, including improved cloth media filter backwashing using a rotating backwash arm assembly.
REFERENCES:
patent: 1359162 (1920-11-01), Genter
patent: 1483111 (1924-02-01), Price
patent: 2028466 (1936-01-01), Moran
patent: 2302449 (1942-11-01), Laughlin
patent: 2351332 (1943-03-01), Goodloe
patent: 2342035 (1944-02-01), Clark
patent: 2940595 (1960-06-01), Crane
patent: 3339742 (1967-09-01), Kracklauer
patent: 3397141 (1968-08-01), Shiro
patent: 3481479 (1969-12-01), Terhune
patent: 3559809 (1971-02-01), Barmore
patent: 3623614 (1971-11-01), Schmidt, Jr.
patent: 3635343 (1972-01-01), Holland
patent: 3731814 (1973-05-01), Walters
patent: 3959148 (1976-05-01), Krynski
patent: 4090965 (1978-05-01), Fuchs
patent: 4107026 (1978-08-01), Freeman
patent: 4116838 (1978-09-01), Lazzarotto
patent: 4152265 (1979-05-01), Meyers
patent: 4519903 (1985-05-01), Johnson
patent: 4540487 (1985-09-01), Johnson
patent: 4579656 (1986-04-01), Johnson
patent: 4639315 (1987-01-01), Fuchs
patent: 4790935 (1988-12-01), Johnson
patent: 4859332 (1989-08-01), Johnson
patent: 4898671 (1990-02-01), Fux
patent: 4919805 (1990-04-01), Johnson
patent: 5035799 (1991-07-01), Rosberg
patent: 5057217 (1991-10-01), Lutz
patent: 5268095 (1993-12-01), Barzuza
patent: 5362384 (1994-11-01), Whetsel
patent: 5374360 (1994-12-01), Weis
patent: 5401405 (1995-03-01), McDougald
patent: 5567327 (1996-10-01), De Haan
patent: 5575910 (1996-11-01), Karbachsch
patent: 5876612 (1999-03-01), Astrom
patent: 6090298 (2000-07-01), Weis
patent: 6103132 (2000-08-01), Seyfried
patent: 6294098 (2001-09-01), Bergmann
patent: 6679994 (2004-01-01), Turco
patent: 6858140 (2005-02-01), Smith et al.
patent: 7537689 (2009-05-01), Ricketts
patent: 2004/0245190 (2004-12-01), Baumann
patent: 2005/0115911 (2005-06-01), Smith
patent: 2005/0161393 (2005-07-01), Baumann
patent: 3902829 (1990-08-01), None
patent: 55-44359 (1980-03-01), None
Photos of system equivalent to that shown schematically in Figs 29, 30 & 31 of U.S. Patent 6,858,140, Feb. 2005.
Baumann Peter G.
Smith David
Aqua-Aerobic Systems, Inc.
Cecil Terry K
Niro Haller & Niro
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