Liquid purification or separation – With repair or assembling means
Reexamination Certificate
2006-04-10
2010-10-26
Savage, Matthew O (Department: 1797)
Liquid purification or separation
With repair or assembling means
C210S291000
Reexamination Certificate
active
07820043
ABSTRACT:
A filter system for filtering water and/or wastewater which includes an underdrain system having a plurality of laterals that are anchored to the floor of a filter by a hold-down assembly. Preferably, the hold-down assembly does not rely on grout or other substance that is applied in a viscous or semi-viscous state and subsequently hardened as the primary means for connecting the underdrain laterals to the floor of the filter. Preferably, the hold-down assembly includes hold-down clips that can move relative to an anchor assembly and corresponding underdrain blocks so that the hold-down clips can cooperate with any desired portion of the corresponding underdrain blocks.
REFERENCES:
patent: 2378239 (1945-06-01), Myron
patent: 3110667 (1963-11-01), Stuppy
patent: 3762559 (1973-10-01), Knoy et al.
patent: 4133766 (1979-01-01), Adie
patent: 5618426 (1997-04-01), Eischen et al.
patent: 5976370 (1999-11-01), Medworth
patent: 6048132 (2000-04-01), Kupke et al.
patent: 6797166 (2004-09-01), Hambley et al.
patent: 2001 0068818 (2001-07-01), None
Hool et al, Concrete Engineers' Handbook, 1918, McGraw-Hill, pp. 142-142.
Photograph obtained from web site at www.awifilter.com/products/underdrain/index.htm.
EP Application No. EP07251543; European Partial Search Report, Oct. 5, 2007.
EP Application No. EP07251543: European Extended Search Report, Jan. 29, 2008.
U.S. Appl. No. 11/812,848, filed Jun. 22, 2007.
Addison Mark Kevin
Ilyin Aleksandr Vladimirovich
Roberts R. Lee
Schmoyer Jason Samuel
Merek & Blackmon & Voorhees, LLC
RG Delaware Inc.
Savage Matthew O
LandOfFree
Underdrain system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Underdrain system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Underdrain system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4177752