Patents by Inventor Richard W. Christy

Richard W. Christy 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).

  • Patent number: 11897800
    Abstract: As pellets grow from seed/sand in a fluidized bed pellent reactor, the weight of the reactor is measured and the density of the contents of the reactor is calculated, and the input flow of untreated water, water treatment chemical, and seed/sand are adjusted to provide improved removal of water hardness while reducing fine particulates in the outflow of softened water from the reactor.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: February 13, 2024
    Assignee: RDP Technologies, Inc.
    Inventor: Richard W. Christy
  • Publication number: 20220348488
    Abstract: An apparatus, method and system is provided for treating sewage sludge by dewatering the sewage sludge, heating the sewage sludge being treated to destroy pathogens, and then reducing volatile solids in the sewage sludge being treated through biochemical decomposition to produce a treated biosolids product that meets government regulations for pathogen reduction and vector attraction reduction.
    Type: Application
    Filed: March 31, 2022
    Publication date: November 3, 2022
    Inventor: Richard W. Christy
  • Patent number: 11339071
    Abstract: An apparatus, method and system is provided for treating sewage sludge by dewatering the sewage sludge, heating the sewage sludge being treated to destroy pathogens, and then reducing volatile solids in the sewage sludge being treated through biochemical decomposition to produce a treated biosolids product that meets government regulations for pathogen reduction and vector attraction reduction.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: May 24, 2022
    Assignee: RDP Technologies, Inc.
    Inventor: Richard W. Christy
  • Patent number: 11339066
    Abstract: A method and apparatus is provided for treating water with already-slaked lime to arrive at a lime slurry that is in a solution or suspension, and delivering the thus treated water to a separating device which separates grit particles therefrom, to recover a high quality lime/water solution or suspension. An automated system controls the addition of lime and water to a lime mixing vessel. An acid wash system is provided which comprises an automated method and apparatus for removing scale buildup, for delivering an acid wash solution to the lime mixing vessel, the lime slurry holding tank and/or the delivery system, or any of them, thereby dissolving the scale buildup.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: May 24, 2022
    Assignee: RDP Technologies, Inc.
    Inventors: Richard W. Christy, Michael Quici, Louis Litz
  • Publication number: 20220135460
    Abstract: Process for treating sludge includes a first segment in which a batch of sludge and lime are mixed with the addition of supplement heat to achieve an elevated processing temperature and a second segment in which the mixer is maintained at a lower temperature to dry the interior of the mixing device after processing the batch.
    Type: Application
    Filed: November 2, 2021
    Publication date: May 5, 2022
    Inventor: RICHARD W. CHRISTY
  • Patent number: 11319247
    Abstract: A fine grit classifier for removing grit from a milk of lime slurry includes a settling tank for receiving the milk of lime slurry, means for creating turbulence inside the tank to promote grit settling, a launder for collecting milk of lime slurry from an upper portion of the settling tank and directing milk of lime slurry to an outlet, and an auger for transporting settled grit from the lower portion of the settling tank and discharging the settled grit.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: May 3, 2022
    Assignee: RDP Technologies, Inc.
    Inventor: Richard W. Christy
  • Publication number: 20220106211
    Abstract: As pellets grow from seed/sand in a fluidized bed pellent reactor, the weight of the reactor is measured and the density of the contents of the reactor is calculated, and the input flow of untreated water, water treatment chemical, and seed/sand are adjusted to provide improved removal of water hardness while reducing fine particulates in the outflow of softened water from the reactor.
    Type: Application
    Filed: December 17, 2021
    Publication date: April 7, 2022
    Inventor: Richard W. Christy
  • Patent number: 11286173
    Abstract: A method and apparatus is provided for water filtration of a milk of lime solution that contains water, impurities, and grit particles, in which the milk of lime solution enters a vessel, and wherein turbulence is created in the vessel, by which larger grit particles settle out of the milk of lime solution, to form a bed of grit particles in the lower end of the vessel, such that grit particles and impurities are filtered from the lime-treated water that comprises a milk of lime solution, with water then being drawn off, that may be discharged out one or more dosing locations and/or recycled back for further filtration, as may be desired.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: March 29, 2022
    Assignee: RDP Technologies, Inc.
    Inventors: Richard W. Christy, Michael Quici
  • Patent number: 11225426
    Abstract: As pellets grow from seed/sand in a fluidized bed pellent reactor, the weight of the reactor is measured and the density of the contents of the reactor is calculated, and the input flow of untreated water, water treatement chemical, and seed/sand are adjusted to provide improved removal of water hardness while reducing fine particulates in the outflow of softened water from the reactor.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: January 18, 2022
    Assignee: RDP Technologies, Inc.
    Inventor: Richard W. Christy
  • Publication number: 20210163351
    Abstract: A method and apparatus is provided for treating water with already-slaked lime to arrive at a lime slurry that is in a solution or suspension, and delivering the thus treated water to a separating device which separates grit particles therefrom, to recover a high quality lime/water solution or suspension. An automated system controls the addition of lime and water to a lime mixing vessel. An acid wash system is provided which comprises an automated method and apparatus for removing scale buildup, for delivering an acid wash solution to the lime mixing vessel, the lime slurry holding tank and/or the delivery system, or any of them, thereby dissolving the scale buildup.
    Type: Application
    Filed: January 29, 2021
    Publication date: June 3, 2021
    Inventors: Richard W. Christy, Michael Quici, Louis Litz
  • Publication number: 20210114927
    Abstract: A fine grit classifier for removing grit from a milk of lime slurry includes a settling tank for receiving the milk of lime slurry, means for creating turbulence inside the tank to promote grit settling, a launder for collecting milk of lime slurry from an upper portion of the settling tank and directing milk of lime slurry to an outlet, and an auger for transporting settled grit from the lower portion of the settling tank and discharging the settled grit.
    Type: Application
    Filed: October 21, 2019
    Publication date: April 22, 2021
    Inventor: Richard W. Christy
  • Patent number: 10906822
    Abstract: A method and apparatus is provided for treating water with already-slaked lime to arrive at a lime slurry that is in a solution or suspension, and delivering the thus treated water to a separating device which separates grit particles therefrom, to recover a high quality lime/water solution or suspension. An automated system controls the addition of lime and water to a lime mixing vessel. An acid wash system is provided which comprises an automated method and apparatus for removing scale buildup, for delivering an acid wash solution to the lime mixing vessel, the lime slurry holding tank and/or the delivery system, or any of them, thereby dissolving the scale buildup.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: February 2, 2021
    Assignee: RDP TECHNOLOGIES, INC.
    Inventors: Richard W. Christy, Michael Quici, Louis Litz
  • Publication number: 20200290909
    Abstract: As pellets grow from seed/sand in a fluidized bed pellent reactor, the weight of the reactor is measured and the density of the contents of the reactor is calculated, and the input flow of untreated water, water treatement chemical, and seed/sand are adjusted to provide improved removal of water hardness while reducing fine particulates in the outflow of softened water from the reactor.
    Type: Application
    Filed: March 12, 2019
    Publication date: September 17, 2020
    Inventor: Richard W. Christy
  • Patent number: 10538446
    Abstract: An apparatus, method and system is provided for treating sewage sludge by dewatering the sewage sludge, heating the sewage sludge being treated to destroy pathogens, and then reducing volatile solids in the sewage sludge being treated through biochemical decomposition to produce a treated biosolids product that meets government regulations for pathogen reduction and vector attraction reduction.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: January 21, 2020
    Assignee: RDP TECHNOLOGIES, INC.
    Inventor: Richard W. Christy
  • Patent number: 10479623
    Abstract: A sludge handling system includes a bin from which treated sewage sludge is discharged. A rotabable discharge device includes an arm for scraping the inside of the bin and a frusto-conical chute from which sludge is discharged through a gate to a waiting truck. A stationary scoop is provided mounted on the gate to scrape the interior wall of the chute of adhering sludge.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: November 19, 2019
    Assignee: RDP TECHNOLOGIES, INC.
    Inventors: Richard W. Christy, Michael Quici, Michael J. Millman
  • Publication number: 20190308828
    Abstract: A sludge handling system includes a bin from which treated sewage sludge is discharged. A rotabable discharge device includes an arm for scraping the inside of the bin and a frusto-conical chute from which sludge is discharged through a gate to a waiting truck. A stationary scoop is provided mounted on the gate to scrape the interior wall of the chute of adhering sludge.
    Type: Application
    Filed: April 4, 2018
    Publication date: October 10, 2019
    Inventors: Richard W. Christy, Michael Quici, Michael J. Millman
  • Publication number: 20190256394
    Abstract: An apparatus, method and system is provided for treating sewage sludge by dewatering the sewage sludge, heating the sewage sludge being treated to destroy pathogens, and then reducing volatile solids in the sewage sludge being treated through biochemical decomposition to produce a treated biosolids product that meets government regulations for pathogen reduction and vector attraction reduction.
    Type: Application
    Filed: May 3, 2019
    Publication date: August 22, 2019
    Inventor: Richard W. Christy
  • Patent number: 10112852
    Abstract: Process and apparatus is disclosed for providing a chemical reaction between calcium oxide containing grit particles to produce calcium hydroxide and heat, capturing the heat of hydration and using it to preheat water initially at ambient temperature, to rise to an elevated temperature to increase the amount of lime present in the water to a supersaturated lime suspension level, with the chemical reaction running to completion, followed by cooling. Heat from a water jacket may be used to raise the temperature in the lime slaker. A process and apparatus is also provided for dissolving scale on internal surfaces of a lime slaker, a lime aging tank, grit separation device and piping and dosing sub-systems, by adding acid into the system with rinse water. A pressurized delivery system that is substantially closed to the atmosphere delivers treating doses of slaked lime slurry under sufficient pressure conditions to maintain a relatively constant back pressure, by means of valving.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: October 30, 2018
    Assignee: RDP Technologies, Inc.
    Inventors: Richard W. Christy, Michael Quici, Louis Litz
  • Publication number: 20180118599
    Abstract: An apparatus, method and system is provided for treating sewage sludge by dewatering the sewage sludge, heating the sewage sludge being treated to destroy pathogens, and then reducing volatile solids in the sewage sludge being treated through biochemical decomposition to produce a treated biosolids product that meets government regulations for pathogen reduction and vector attraction reduction.
    Type: Application
    Filed: October 27, 2017
    Publication date: May 3, 2018
    Inventor: Richard W. Christy
  • Patent number: 9856166
    Abstract: Process and apparatus is disclosed for providing a chemical reaction between calcium oxide containing grit particles to produce calcium hydroxide and heat, capturing the heat of hydration and using it to preheat water initially at ambient temperature, to rise to an elevated temperature to increase the amount of lime present in the water to a supersaturated lime suspension level, with the chemical reaction running to completion, followed by cooling. Heat from a water jacket may be used to raise the temperature in the lime slaker.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: January 2, 2018
    Assignee: RDP TECHNOLOGIES, INC.
    Inventors: Richard W. Christy, Michael Quici, Louis Litz