Patents Assigned to Environmental Purification, LLC
  • Patent number: 9955829
    Abstract: Methods and apparatus for controlling odors in an enclosed space, such as a pit latrine, include providing an oxidizer, such as a catalytic heater and an optional mechanical ventilation unit, such as an inline fan, both flow connected to a vault (pit) of the latrine. The heater is also connected to a source of fuel, for example, propane. Fresh air is drawn through vents in the latrine housing and thereafter through toilets in the latrine and through the vault, providing oxygen for the reaction. The fan and/or oxidation process draws both fresh air and accompanying odorous compounds directly from the latrine and into the oxidizer wherein the odorous components are substantially destroyed.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: May 1, 2018
    Assignee: Environmental Purification, LLC
    Inventors: Don S. Sifers, Kent A. Pennybaker
  • Patent number: 9265389
    Abstract: Methods and apparatus for controlling odors in an enclosed space, such as a pit latrine, include providing an oxidizer, such as a catalytic heater and an optional mechanical ventilation unit, such as an inline fan, both flow connected to a vault (pit) of the latrine. The heater is also connected to a source of fuel, for example, propane. Fresh air is drawn through vents in the latrine housing and thereafter through toilets in the latrine and through the vault, providing oxygen for the reaction. The fan and/or oxidation process draws both fresh air and accompanying odorous compounds directly from the latrine and into the oxidizer wherein the odorous components are substantially destroyed.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: February 23, 2016
    Assignee: Environmental Purification, LLC
    Inventors: Don S. Sifers, Kent A. Pennybaker
  • Patent number: 9017606
    Abstract: Methods and apparatus for controlling odors in an enclosed space, such as a pit latrine, include providing an oxidizer, such as a catalytic heater and an optional mechanical ventilation unit, such as an inline fan, both flow connected to a vault (pit) of the latrine. The heater is also connected to a source of fuel, for example, propane. Fresh air is drawn through vents in the latrine housing and thereafter through toilets in the latrine and through the vault, providing oxygen for the reaction. The fan and/or oxidation process draws both fresh air and accompanying odorous compounds directly from the latrine and into the oxidizer wherein the odorous components are substantially destroyed.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: April 28, 2015
    Assignee: Environmental Purification, LLC
    Inventors: Don S. Sifers, Kent A. Pennybaker
  • Patent number: 8784739
    Abstract: Methods and apparatus for controlling fecal odors in an enclosed space, such as a pit latrine, include providing an oxidizer, such as a catalytic heater and an optional mechanical ventilation unit, such as an inline fan, both flow connected to a vault (pit) of the latrine. The heater is also connected to a source of fuel, for example, propane. Fresh air is drawn through vents in the latrine housing and thereafter through toilets in the latrine and through the vault, providing oxygen for the reaction. The fan and/or oxidation process draws both fresh air and accompanying odorous compounds directly from the latrine and into the oxidizer wherein the odorous components are substantially destroyed.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: July 22, 2014
    Assignee: Environmental Purification, LLC
    Inventors: Don S. Sifers, Kent A. Pennybaker
  • Patent number: 8475718
    Abstract: Methods and apparatus for controlling fecal odors in an enclosed space, such as a pit latrine, include providing an oxidizer, such as a catalytic heater and an optional mechanical ventilation unit, such as an inline fan, both flow connected to a vault (pit) of the latrine. The heater is also connected to a source of fuel, for example, propane. Fresh air is drawn through vents in the latrine housing and thereafter through toilets in the latrine and through the vault, providing oxygen for the reaction. The fan and/or oxidation process draws both fresh air and accompanying odorous compounds directly from the latrine and into the oxidizer wherein the odorous components are substantially destroyed.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: July 2, 2013
    Assignee: Environmental Purification, LLC
    Inventors: Don S. Sifers, Kent A. Pennybaker