Patents by Inventor Peter J. Petit
Peter J. Petit has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10207210Abstract: A filter device is configured to filter a liquid. The filter device includes a drum sized to receive the liquid and a plurality of filter panels coupled to the drum to define a plurality of discs. The liquid passes through at least a portion of one of the discs. Each filter panel includes a perimeter frame that defines a panel normal flow area and a filter media coupled to the perimeter frame. The filter media may be adapted to include a plurality of pleats.Type: GrantFiled: March 18, 2016Date of Patent: February 19, 2019Assignee: Evoqua Water Technologies LLCInventors: Peter J. Petit, William E. Davis
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Publication number: 20170043284Abstract: A filter device is configured to filter a liquid. The filter device includes a drum sized to receive the liquid and a plurality of filter panels coupled to the drum to define a plurality of discs. The liquid passes through at least a portion of one of the discs. Each filter panel includes a perimeter frame that defines a panel normal flow area and a filter media coupled to the perimeter frame. The filter media may be adapted to include a plurality of pleats.Type: ApplicationFiled: March 18, 2016Publication date: February 16, 2017Applicant: EVOQUA WATER TECHNOLOGIES LLCInventors: Peter J. Petit, William E. Davis
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Patent number: 9339745Abstract: A filter device for filtering a liquid which includes trash. The device includes a drum for receiving the liquid and trash, wherein the drum includes at least one drum aperture. The device further includes a first pair of filter panels which are adapted for filtering the liquid. The filter panels are spaced apart to form a cavity for receiving the liquid and trash. The device further includes a frame for supporting the filter panels, wherein the frame is coupled to the drum. The frame includes a frame aperture wherein the frame aperture and the cavity form a volume having a cross sectional area sized substantially equal to or greater than the drum aperture and wherein said volume extends to a second pair of filter panels to enable liquid and trash which pass through the drum aperture to also pass through the frame aperture to the second pair of filter panels.Type: GrantFiled: July 24, 2014Date of Patent: May 17, 2016Assignee: Evoqua Water Technologies LLCInventors: William E. Davis, Peter J. Petit
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Publication number: 20150246302Abstract: A filter device is configured to filter a liquid. The filter device includes a drum sized to receive the liquid and a plurality of filter panels coupled to the drum to define a plurality of discs. The liquid passes through at least a portion of one of the discs. Each filter panel includes a perimeter frame that defines a panel normal flow area and a filter media coupled to the perimeter frame. The filter media may be adapted to include a plurality of pleats.Type: ApplicationFiled: April 17, 2015Publication date: September 3, 2015Inventors: Peter J. Petit, William E. Davis
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Patent number: 9028692Abstract: A filter device is configured to filter a liquid. The filter device includes a drum sized to receive the liquid and a plurality of filter panels coupled to the drum to define a plurality of discs. The liquid passes through at least a portion of one of the discs. Each filter panel includes a perimeter frame that defines a panel normal flow area and a filter media coupled to the perimeter frame. The filter media may be adapted to include a plurality of pleats.Type: GrantFiled: August 10, 2007Date of Patent: May 12, 2015Assignee: Evoqua Water Technologies LLCInventors: Peter J. Petit, William Davis
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Patent number: 9023208Abstract: A filter device having a vent device for inhibiting formation of a vacuum in the filter device. The filter device includes a drum for receiving the liquid wherein the drum includes a drum headspace. The filter device also includes filter sets for filtering the liquid. The drum is rotated to enable cleaning of filter media. The filter device also includes a frame having spaced apart supports for supporting each of the filter sets. A fluid passageway extends between the supports, wherein the fluid passageway provides fluid communication between the tank headspace and a filter set to vent a filter set.Type: GrantFiled: July 24, 2014Date of Patent: May 5, 2015Assignee: Evoqua Water Technologies LLCInventors: William E. Davis, Peter J. Petit
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Publication number: 20150008194Abstract: A filter device having a vent device for inhibiting formation of a vacuum in the filter device. The filter device includes a drum for receiving the liquid wherein the drum includes a drum headspace. The filter device also includes filter sets for filtering the liquid. The drum is rotated to enable cleaning of filter media. The filter device also includes a frame having spaced apart supports for supporting each of the filter sets. A fluid passageway extends between the supports, wherein the fluid passageway provides fluid communication between the tank headspace and a filter set to vent a filter set.Type: ApplicationFiled: July 24, 2014Publication date: January 8, 2015Inventors: William E. Davis, Peter J. Petit
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Publication number: 20140360950Abstract: A filter device for filtering a liquid which includes trash. The device includes a drum for receiving the liquid and trash, wherein the drum includes at least one drum aperture. The device further includes a first pair of filter panels which are adapted for filtering the liquid. The filter panels are spaced apart to form a cavity for receiving the liquid and trash. The device further includes a frame for supporting the filter panels, wherein the frame is coupled to the drum. The frame includes a frame aperture wherein the frame aperture and the cavity form a volume having a cross sectional area sized substantially equal to or greater than the drum aperture and wherein said volume extends to a second pair of filter panels to enable liquid and trash which pass through the drum aperture to also pass through the frame aperture to the second pair of filter panels.Type: ApplicationFiled: July 24, 2014Publication date: December 11, 2014Inventors: William E. Davis, Peter J. Petit
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Patent number: 8808542Abstract: A filter device having a vent device for inhibiting formation of a vacuum in the filter device. The filter device includes a drum for receiving the liquid wherein the drum includes a drum headspace. The filter device also includes filter sets for filtering the liquid. The drum is rotated to enable cleaning of filter media. The filter device also includes a frame having spaced apart supports for supporting each of the filter sets. A fluid passageway extends between the supports, wherein the fluid passageway provides fluid communication between the tank headspace and a filter set to vent a filter set.Type: GrantFiled: February 20, 2012Date of Patent: August 19, 2014Assignee: Evoqua Water Technologies LLCInventors: William E. Davis, Peter J. Petit
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Patent number: 8801929Abstract: A filter device for filtering a liquid which includes trash. The device includes a drum for receiving the liquid and trash, wherein the drum includes at least one drum aperture. The device further includes a first pair of filter panels which are adapted for filtering the liquid. The filter panels are spaced apart to form a cavity for receiving the liquid and trash. The device further includes a frame for supporting the filter panels, wherein the frame is coupled to the drum. The frame includes a frame aperture wherein the frame aperture and the cavity form a volume having a cross sectional area sized substantially equal to or greater than the drum aperture and wherein said volume extends to a second pair of filter panels to enable liquid and trash which pass through the drum aperture to also pass through the frame aperture to the second pair of filter panels.Type: GrantFiled: July 15, 2008Date of Patent: August 12, 2014Assignee: Evoqua Water Technologies LLCInventors: William E. Davis, Peter J. Petit
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Publication number: 20120298573Abstract: A filter device having a vent device for inhibiting formation of a vacuum in the filter device. The filter device includes a drum for receiving the liquid wherein the drum includes a drum headspace. The filter device also includes filter sets for filtering the liquid. The drum is rotated to enable cleaning of filter media. The filter device also includes a frame having spaced apart supports for supporting each of the filter sets. A fluid passageway extends between the supports, wherein the fluid passageway provides fluid communication between the tank headspace and a filter set to vent a filter set.Type: ApplicationFiled: February 20, 2012Publication date: November 29, 2012Inventors: William E. Davis, Peter J. Petit
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Patent number: 8118175Abstract: A filter device having a vent device for inhibiting formation of a vacuum in the filter device. The filter device includes a drum for receiving the liquid wherein the drum includes a drum headspace. The filter device also includes filter sets for filtering the liquid. The drum is rotated to enable cleaning of filter media. The filter device also includes a frame having spaced apart supports for supporting each of the filter sets. A fluid passageway extends between the supports, wherein the fluid passageway provides fluid communication between the tank headspace and a filter set to vent a filter set.Type: GrantFiled: July 15, 2008Date of Patent: February 21, 2012Assignee: Siemens Industry, Inc.Inventors: William E. Davis, Peter J. Petit
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Patent number: 7569147Abstract: A method for removing inert solids from low-yield wastewater treatment processes. The method includes combining wastewater with bacteria-laden sludge in a mainstream reactor to form a mixed liquor, separating the mixed liquor into a clear effluent and activated sludge, returning a first portion of activated sludge to the mainstream reactor, treating a second portion of activated sludge in a sidestream bioreactor prior to returning the second portion of activated sludge to the mainstream reactor, and employing a screening device within the wastewater treatment process to remove inert solids.Type: GrantFiled: August 31, 2006Date of Patent: August 4, 2009Assignee: Siemens Water Technologies Corp.Inventors: Betty-Ann Curtis, Marc Roehl, Michael Doyle, Peter J. Petit
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Publication number: 20090020483Abstract: A filter device for filtering a liquid which includes trash. The device includes a drum for receiving the liquid and trash, wherein the drum includes at least one drum aperture. The device further includes a first pair of filter panels which are adapted for filtering the liquid. The filter panels are spaced apart to form a cavity for receiving the liquid and trash. The device further includes a frame for supporting the filter panels, wherein the frame is coupled to the drum. The frame includes a frame aperture wherein the frame aperture and the cavity form a volume having a cross sectional area sized substantially equal to or greater than the drum aperture and wherein said volume extends to a second pair of filter panels to enable liquid and trash which pass through the drum aperture to also pass through the frame aperture to the second pair of filter panels.Type: ApplicationFiled: July 15, 2008Publication date: January 22, 2009Inventors: William E. Davis, Peter J. Petit
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Publication number: 20090020484Abstract: A filter device having a vent device for inhibiting formation of a vacuum in the filter device. The filter device includes a drum for receiving the liquid wherein the drum includes a drum headspace. The filter device also includes filter sets for filtering the liquid. The drum is rotated to enable cleaning of filter media. The filter device also includes a frame having spaced apart supports for supporting each of the filter sets. A fluid passageway extends between the supports, wherein the fluid passageway provides fluid communication between the tank headspace and a filter set to vent a filter set.Type: ApplicationFiled: July 15, 2008Publication date: January 22, 2009Inventors: William E. Davis, Peter J. Petit
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Publication number: 20080035584Abstract: A filter device is configured to filter a liquid. The filter device includes a drum sized to receive the liquid and a plurality of filter panels coupled to the drum to define a plurality of discs. The liquid passes through at least a portion of one of the discs. Each filter panel includes a perimeter frame that defines a panel normal flow area and a filter media coupled to the perimeter frame. The filter media may be adapted to include a plurality of pleats.Type: ApplicationFiled: August 10, 2007Publication date: February 14, 2008Applicant: SIEMENS WATER TECHNOLOGIES CORP.Inventors: Peter J. Petit, William Davis
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Patent number: 5976365Abstract: A reactor apparatus including a fluid bed reactor wherein liquid to be processed is conducted upwardly therein through a solid bed to fluidize the bed, the bed including particulate solids having biological material supported thereon, and the liquid forming an effluent head above the bed. The reactor apparatus also includes a control apparatus for removing excess biological material from the reactor. The control apparatus includes a tubular separator column which is emersed in the liquid effluent head, and a telescoping sludge valve that has a draw-off port communicating openly with the effluent head surface and that is adjustable to raise and lower the draw-off port relative to the effluent head surface to control the sludge withdrawal rate.Type: GrantFiled: February 14, 1994Date of Patent: November 2, 1999Assignee: Envirex, Inc.Inventor: Peter J. Petit
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Patent number: 5766491Abstract: The invention provides a fluid treatment apparatus including a fluid bed reactor. The fluid bed reactor includes a flow distribution system having a flow distributor for introducing untreated fluid into the reactor. The untreated fluid is introduced at a flow rate sufficient to generate an upflow velocity within the reactor that fluidizes the media bed within the reactor. The flow distribution system also includes a backflow prevention apparatus for supplying an auxiliary fluid to the flow distributer in the event flow of untreated fluid to the flow distributor is interrupted. The auxiliary fluid flushes the flow distributor while the media bed defluidizes to prevent the media bed from backing up into the flow distributor as it settles to the bottom of the reactor.Type: GrantFiled: June 3, 1996Date of Patent: June 16, 1998Assignee: Envirex Inc.Inventors: Eugene Mazewski, Peter J. Petit, Robert D. Hines, Jr.
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Patent number: 5766484Abstract: A dissolved gas flotation system for treatment of wastewater or contaminated water and having an improved flow pattern wherein the subnatant discharge outlet and the inlet distribution structures are located adjacent one another. Such a structural design takes advantage of the fluid flow patterns within the tank to maximize the effect of the air bubbles in separating solids from the fluid.Type: GrantFiled: June 3, 1996Date of Patent: June 16, 1998Assignee: Envirex Inc.Inventors: Peter J. Petit, William H. Boyle, Charles S. Applegate
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Patent number: 5538635Abstract: A liquid treatment apparatus for removing potentially combustible substances from water includes a biological fluid bed reactor that is supplied by a first conduit with contaminated water and that treats this water, under aerobic conditions, before discharging it as treated effluent containing a significantly reduced concentration of contaminants. The liquid treatment apparatus also includes a gas dissolution apparatus for providing dissolved oxygen to the contaminated water flowing through the first conduit to sustain biological action in the reactor. The gas dissolution apparatus includes an oxygenator including a pressurized bubble contactor disposed in a recycle conduit connected between the outlet of the reactor and the first conduit.Type: GrantFiled: December 30, 1994Date of Patent: July 23, 1996Assignee: Envirex, Inc.Inventors: Eugene E. Mazewski, Peter J. Petit, Richard E. Speece