Patents by Inventor David W. Blanchette
David W. Blanchette 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: 11427488Abstract: The invention is an apparatus for preparing a chemical solution. A device of the present invention includes a housing including a lower chamber and an upper chamber and a dissolving bowl arranged at an interface of the lower chamber and upper chamber. The dissolving bowl includes a grid disposed within. Solid, undissolved chemical material rests on a top surface of the grid, such that the grid is able to maintain physical separation of the solid, undissolved chemical material from at least a bottom portion of the dissolving bowl. The device further includes a nozzle disposed within the dissolving bowl and positioned so as to direct flow of aqueous fluid into the dissolving bowl and towards the grid. The dissolving bowl further includes an outlet in fluid communication with the lower chamber to thereby allow for a prepared chemical solution to flow from the dissolving bowl into the lower chamber.Type: GrantFiled: May 1, 2020Date of Patent: August 30, 2022Assignee: Innovative Water Care, LLCInventors: David W Blanchette, Matthew Muller
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Publication number: 20200346175Abstract: The invention is an apparatus for preparing a chemical solution. A device of the present invention includes a housing including a lower chamber and an upper chamber and a dissolving bowl arranged at an interface of the lower chamber and upper chamber. The dissolving bowl includes a grid disposed within. Solid, undissolved chemical material rests on a top surface of the grid, such that the grid is able to maintain physical separation of the solid, undissolved chemical material from at least a bottom portion of the dissolving bowl. The device further includes a nozzle disposed within the dissolving bowl and positioned so as to direct flow of aqueous fluid into the dissolving bowl and towards the grid. The dissolving bowl further includes an outlet in fluid communication with the lower chamber to thereby allow for a prepared chemical solution to flow from the dissolving bowl into the lower chamber.Type: ApplicationFiled: May 1, 2020Publication date: November 5, 2020Inventors: David W. Blanchette, Matthew Muller
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Patent number: 8372348Abstract: An apparatus includes a reservoir for holding a chemical solution, a pump and a discharge nozzle. The pump has an inlet and an outlet connected to the reservoir by inlet and discharge lines. The nozzle is disposed in a lower portion of the reservoir and discharges the solution toward the bottom of the reservoir; the nozzle has an inlet port connected to the pump discharge line through the sidewall of the reservoir. The pump inlet line is connected to a sidewall of the reservoir at a location below a normal surface level of the solution, and the pump discharge line is connected to the sidewall of the reservoir above that location. The reservoir, pump, pump inlet line, pump discharge line, nozzle inlet line and nozzle form a closed loop recirculation system effective to suspend insoluble material in the chemical solution.Type: GrantFiled: June 23, 2009Date of Patent: February 12, 2013Assignee: Arch Chemicals, Inc.Inventors: Zachary Harris Adams, David W. Blanchette
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Patent number: 7820198Abstract: One aspect of the present invention is directed to a solid chemical tablet in a shape comprising an elongated cylindrical side surface and an elongated flat side surface or an elongated concave cut side surface. Another aspect of the present invention is directed to a solid chemical tablet comprising a blend of hydrated calcium hypochlorite with magnesium sulfate heptahydrate. This invention further relates to a solid chemical tablet comprising a blend of solid calcium hypochlorite, and one or more solid alkali metal phosphate.Type: GrantFiled: October 19, 2004Date of Patent: October 26, 2010Assignee: Arch Chemicals, Inc.Inventors: David W. Blanchette, G. Warren Ginn
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Patent number: 7658844Abstract: A chemical feeder for dissolving chemical tablets includes a housing and a plurality of tapered pedestals positioned in the housing for supporting the chemical tablet as the tablet is dissolved by liquid flowing through the feeder. The housing also includes a cup configured to receive a cartridge for holding the tablet; the cup includes inlet and outlet ports for the liquid. The cartridge includes a plate at its lower end; the pedestals are formed on its interior surface. Each pedestal may have a pencil-point shape. When the chemical tablet is installed in the cartridge and the cartridge is installed in the cup, the tapered pedestals support the chemical tablet and thereby expose an underside of the tablet to the liquid. The tablet is immersed in the liquid according to the height of the pedestal; the dissolution rate of the tablet thus corresponds to the height of the pedestals.Type: GrantFiled: May 28, 2008Date of Patent: February 9, 2010Assignee: Arch Chemicals, Inc.Inventor: David W. Blanchette
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Publication number: 20090324747Abstract: An apparatus includes a reservoir for holding a chemical solution, a pump and a discharge nozzle. The pump has an inlet and an outlet connected to the reservoir by inlet and discharge lines. The nozzle is disposed in a lower portion of the reservoir and discharges the solution toward the bottom of the reservoir; the nozzle has an inlet port connected to the pump discharge line through the sidewall of the reservoir. The pump inlet line is connected to a sidewall of the reservoir at a location below a normal surface level of the solution, and the pump discharge line is connected to the sidewall of the reservoir above that location. The reservoir, pump, pump inlet line, pump discharge line, nozzle inlet line and nozzle form a closed loop recirculation system effective to suspend insoluble material in the chemical solution.Type: ApplicationFiled: June 23, 2009Publication date: December 31, 2009Inventors: Zachary Harris Adams, David W. Blanchette
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Publication number: 20080296214Abstract: A chemical feeder for dissolving chemical tablets includes a housing and a plurality of tapered pedestals positioned in the housing for supporting the chemical tablet as the tablet is dissolved by liquid flowing through the feeder. The housing also includes a cup configured to receive a cartridge for holding the tablet; the cup includes inlet and outlet ports for the liquid. The cartridge includes a plate at its lower end; the pedestals are formed on its interior surface. Each pedestal may have a pencil-point shape. When the chemical tablet is installed in the cartridge and the cartridge is installed in the cup, the tapered pedestals support the chemical tablet and thereby expose an underside of the tablet to the liquid. The tablet is immersed in the liquid according to the height of the pedestal; the dissolution rate of the tablet thus corresponds to the height of the pedestals.Type: ApplicationFiled: May 28, 2008Publication date: December 4, 2008Inventor: David W. Blanchette
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Patent number: 7143778Abstract: A feeder device for introducing treatment chemicals into a recirculating water stream from a swimming pool. The feeder device includes a housing having a top and bottom portions. A funnel-like hopper having sidewalls and an open bottom forms the inside of the top portion. A grid at least partially closes the open bottom of the hopper. The grid includes a top surface and a bottom surface. One or more chemicals such as chlorine are contained within the sidewalls of the hopper and supported by the top surface of the grid. A dissolving cup having a bottom surface and sidewalls is positioned within the bottom portion. The sidewalls include an opening or notch of a predetermined cross-sectional area formed therein. The bottom surface includes a center nozzle oriented vertically toward the bottom surface of the grid and an off-center nozzle adapted to direct the fluid horizontally in the dissolving cup.Type: GrantFiled: January 21, 2005Date of Patent: December 5, 2006Assignee: Arch Chemicals, Inc.Inventors: David W. Blanchette, Christopher M. Zetena, Michael Paloian, Anthony R. Orchard
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Patent number: 6915811Abstract: A feeder that uses a local elevation or stationary wave of a body of water to facilitate the dissolving of a chlorine-containing water treatment chemical.Type: GrantFiled: December 2, 2002Date of Patent: July 12, 2005Assignee: Arch Chemicals, Inc.Inventors: David W. Blanchette, Christopher M. Zetena, Michael Paloian, Anthony R. Orchard
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Publication number: 20030116592Abstract: A feeder that uses a local elevation or stationary wave of a body of water to facilitate the dissolving of a chlorine-containing water treatment chemical.Type: ApplicationFiled: December 2, 2002Publication date: June 26, 2003Inventors: David W. Blanchette, Christopher M. Zetena, Michael Paloian, Anthony R. Orchard
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Patent number: 6497822Abstract: A feeder uses vortex flow to facilitate the dissolving of a chlorine-containing water treatment chemical. A feeder inlet receives water which is directed to a chamber by a conduit. A vortex flow in the chamber receives amounts of the chemical from a reservoir. Chlorine-containing water exits through an outlet.Type: GrantFiled: July 26, 2001Date of Patent: December 24, 2002Assignee: Arch Chemicals, Inc.Inventors: David W. Blanchette, Christopher M. Zetena, Michael Paloian, G. Warren Ginn
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Publication number: 20020011436Abstract: A feeder uses vortex flow to facilitate the dissolving of a chlorine-containing water treatment chemical. A feeder inlet receives water which is directed to a chamber by a conduit. A vortex flow in the chamber receives amounts of the chemical from a reservoir. Chlorine-containing water exits through an outlet.Type: ApplicationFiled: July 26, 2001Publication date: January 31, 2002Inventors: David W. Blanchette, Christopher M. Zetena, Michael Paloian, G. Warren Ginn
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Patent number: 5928608Abstract: Swimming pool or drinking water is chlorinated by the use of an intermittent spray-type chlorinator assembly. The chlorinator assembly includes a chamber for holding a quantity of solid dry chlorinating chemical, typically in the form of briquettes or pellets.The water spray impacts, abrades, and dissolves the briquettes to a degree, and at a rate which is controlled by the velocity of the spray; the diameter of the support grid; the percentage of open space in, and the thickness of the support grid; and the cyclic timing of the spray. The chemical-water mixture falls into a chamber below the spray and is evacuated therefrom through discharge/check valve assembly to a return line that leads back to the source of the water being chlorinated. The spray duration times and the intervals therebetween can be selectively changed by an attendant.Type: GrantFiled: January 8, 1998Date of Patent: July 27, 1999Assignee: Arch Chemicals Inc.Inventors: Kenneth John Levesque, Richard M. Mullins, Rocco Telese, David W. Blanchette