Mark K Addison

US Patent:

6569327, May 27, 2003

Filed:

Jan 23, 2001

Appl. No.:

09/766631

Inventors:

R. Lee Roberts - Chadds Ford PA
Mark Kevin Addison - Bear DE

Assignee:

RG Delaware, Inc. - Willmington DE

International Classification:

B01D 2422

US Classification:

210274, 210293

Abstract:

A fluid distribution system for directing fluids through a filter system. The fluid distribution system ensures proper distribution of fluids during the process of filtering as well as the process of washing a filter bed. The fluid distribution system may be used with numerous filter systems including but not limited to an upflow filter, a downflow filter, a combined upflow/downflow filter and/or multiple downflow filters connected in series.

US Patent:

6616852, Sep 9, 2003

Filed:

Jun 28, 2001

Appl. No.:

09/892515

Inventors:

R. Lee Roberts - Chadds Ford PA
Mark Kevin Addison - Bear DE

Assignee:

RG Delaware, Inc. - Wilmington DE

International Classification:

B01D 2446

US Classification:

210793, 210136, 210264, 210271, 210275

Abstract:

A modular filter system having a mechanism for performing a filter to waste step on the last cell of a multi-cell system following backwashing. A method of operating a modular filter system in which a filter to waste step is performed on the last cell of a multi-cell system after backwashing.

US Patent:

6740237, May 25, 2004

Filed:

Sep 22, 1997

Appl. No.:

08/935365

Inventors:

R. Lee Roberts - Chadds Ford PA
Mark Kevin Addison - Bear DE
Andrew Scott Taylor - Drexel Hill PA

Assignee:

RG Delaware, Inc. - Wilmington DE

International Classification:

B01D 3530

US Classification:

210275, 210274, 210293

Abstract:

An improved underdrain block for an underdrain system supporting a filter media bed in a liquid filtration system is provided. The underdrain blocks are preferably made of an extrudable polymeric material that is extruded in relatively long sections to provide light weight, strong, easily manufactured underdrain systems having a lower profile than prior art underdrain blocks. The underdrain block comprises an upper wall, side walls, a lower wall, at least one lateral member between the upper wall and the lower wall, at least two chambers within the underdrain block, each chamber being defined by the lateral member, a plurality of upper orifices in the upper wall of the underdrain block, and a plurality of internal orifices in the lateral member. The underdrain block is substantially greater in longitudinal length than a longitudinal distance between the upper orifices. In one embodiment, the underdrain block has rails situated on the upper wall for engaging extruded members, which in turn, have receiving recesses for receiving a layer of porous filter media.

US Patent:

6942795, Sep 13, 2005

Filed:

Jan 31, 2003

Appl. No.:

10/355082

Inventors:

R. Lee Roberts - Chadds Ford PA, US
Mark Kevin Addison - Bear DE, US

Assignee:

RG Delaware, Inc. - Wilmington DE

International Classification:

B01D023/24

US Classification:

210264, 210276, 210292, 210271, 210273, 210274, 210275, 210793, 210188, 210136, 210 86

Abstract:

A modular filter system and a method of repairing and/or replacing one or more components thereof. The modular filter system includes a traveling backwash hood assembly and a plurality of filter cells having media contained therein. The traveling backwash hood assembly includes a hood and a baffle assembly. Preferably, the hood has at least one opening formed therein and a cover plate operably associated with the at least one opening. The baffle assembly includes a plurality of baffles for directing the flow of fluid. The baffle assembly is detachably connected to the hood to permit the baffle assembly to be moved relative to the hood to permit an individual to readily gain access to the baffle assembly to repair or replace one or more components thereof.

US Patent:

6982034, Jan 3, 2006

Filed:

Sep 10, 2001

Appl. No.:

09/948798

Inventors:

R. Lee Roberts - Chadds Ford PA, US
Mark Kevin Addison - Bear DE, US

Assignee:

RG Delaware, Inc. - Wilmington DE

International Classification:

B01D 24/22

US Classification:

210232, 210293

Abstract:

An underdrain system having a bottom formed of concrete. The concrete bottom includes a plurality of generally cone shaped depressions formed therein. A porous plate is operably associated with at least one of the generally cone shaped depressions. The underdrain system further includes an insert having at least one distribution orifice for distributing the flow. The insert is positioned beneath the porous plate and at least partially within the at least one generally cone shaped depression. The insert insures thorough distribution of any fluid passing through the porous plate, i. e. , the fluid is evenly distributed over the entire surface area of the porous plate. In an alternative embodiment, an underdrain system is provided including a bottom formed of concrete. The bottom has a plurality of generally cone shaped depressions formed therein. A porous plate is operably associated with at least one of the generally cone shaped depressions.

US Patent:

6989096, Jan 24, 2006

Filed:

May 16, 2003

Appl. No.:

10/438991

Inventors:

R. Lee Roberts - Chadds Ford PA, US
Mark Kevin Addison - Bear DE, US

Assignee:

RG Delaware, Inc. - Wilmington DE

International Classification:

B01D 24/22
B01D 24/26

US Classification:

210220, 210232, 210274, 210275, 210293

Abstract:

A fluid distribution system for directing fluids through a filter system. The fluid distribution system ensures proper distribution of fluids during the process of filtering as well as the process of washing a filter bed. The fluid distribution system may be used with numerous filter systems including but not limited to an upflow filter, a downflow filter, a combined upflow/downflow filter and/or multiple downflow filters connected in series.

US Patent:

6991723, Jan 31, 2006

Filed:

Mar 28, 2003

Appl. No.:

10/400575

Inventors:

R. Lee Roberts - Chadds Ford PA, US
Mark Kevin Addison - Bear DE, US

Assignee:

RG Delaware, Inc. - Wilmington DE

International Classification:

B01D 24/38

US Classification:

210232, 210289, 210291, 210293

Abstract:

An underdrain system having a bottom formed of concrete. The concrete bottom includes a plurality of depressions formed therein. A porous plate is operably associated with at least one of the depressions. An anchor assembly is provided for anchoring the porous plate to the concrete bottom in an efficient and cost effective manner. Preferably, the anchor assembly permits the porous plate to be readily replaced. An optional insert may be used to enhance the distribution of the flow of fluid through the porous plate.

US Patent:

6998046, Feb 14, 2006

Filed:

Aug 9, 2002

Appl. No.:

10/214580

Inventors:

R. Lee Roberts - Chadds Ford PA, US
Mark Kevin Addison - Bear DE, US

Assignee:

RG Delaware, Inc. - Wilmington DE

International Classification:

B01D 24/18

US Classification:

210264, 210273, 210279, 210292, 210293, 210340, 210341, 210416, 210427, 210108, 210472, 210605

Abstract:

A filter system employing a modular filter and at least one high rate pre-treatment system for expeditiously and effectively filtering water. The modular filter includes a reservoir housing for containing fluid. A plurality of filter cells are disposed in the reservoir housing for filtering influent passed through the reservoir housing. Each of the plurality of filter cells has at least one layer of media. A moveable backwash assembly is provided for sequentially backwashing the plurality of filter cells. The backwashing procedure is performed on the modular filter system such that while one of the plurality of cells is being backwashed the remaining cells are filtering pre-treated influent processed by the pre-treatment system. The pre-treatment system preferably has a footprint considerably smaller than the footprint of the modular filter. Further, the pre-treatment system preferably includes at least two pre-filters such that when one of the pre-filters is being cleaned the other pre-filter is still directing treated influent to the modular filter for further processing.