Patents by Inventor Harold R. Cowles

Harold R. Cowles 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).

  • Publication number: 20190022579
    Abstract: A system and method for removing volatile organic compounds and airborne odors utilizing an adsorber and a desorber having an adsorbent media circulated there between. Contaminated air is supplied to the adsorber and passed through in contact with the absorbent media; the contaminated media is transported to the desorber and passed through in contact with a stripping gas to remove the contaminants from the media. The cleaned media is returned to the adsorber in a continuous process. The rate of media transfer between the two units and the temperature and volume of the stripping gas provided to the desorber are controlled to maintain the concentration of contaminants in the stripping air to 50% of the lower explosive limit. The system includes a variable speed fan for delivering hot stripping gas in the form of heated ambient air and provides a thermal oxidizer for destroying the VOCs removed from the media.
    Type: Application
    Filed: February 13, 2017
    Publication date: January 24, 2019
    Inventor: Harold R. Cowles
  • Patent number: 6607583
    Abstract: A method and apparatus for controlling the heating of adsorbent materials in a vessel including the utilization of electrodes in direct contact with the adsorbent material to induce a current in the material. The electrical contacts are spaced apart and receive a potential for inducing the electrical current; one of the electrodes is a different size to thereby induce a radial component in the electrical current to thus modify the current density flowing through the adsorbent material as the current traverses the distance between the electrodes. The resulting modified current density causes the temperature gradient across the transverse section of the vessel to decrease, thus rendering the temperature more uniform across the vessel.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: August 19, 2003
    Inventors: Harold R. Cowles, William J. Stanley, Christopher M. Cueman
  • Publication number: 20030075045
    Abstract: A method and apparatus for controlling the heating of adsorbent materials in a vessel including the utilization of electrodes in direct contact with the adsorbent material to induce a current in the material. The electrical contacts are spaced apart and receive a potential for inducing the electrical current; one of the electrodes is a different size to thereby induce a radial component in the electrical current to thus modify the current density flowing through the adsorbent material as the current traverses the distance between the electrodes. The resulting modified current density causes the temperature gradient across the transverse section of the vessel to decrease, thus rendering the temperature more uniform across the vessel.
    Type: Application
    Filed: October 22, 2001
    Publication date: April 24, 2003
    Inventors: Harold R. Cowles, William J. Stanley, Christopher M. Cueman
  • Patent number: 6372018
    Abstract: A VOC removal or destruction system incorporates a regenerator/reactivator having a cylindrical ceramic tube for receiving contaminated adsorbent activated carbon. Electrodes are provided in the ceramic tube in contact with the activated carbon and a programmable logic controller is connected to control the voltage applied to the electrodes and the current flowing through the activated carbon within the tube. The temperature of the material in the tube is controlled by the programmable controller to maintain a temperature within one of two temperature ranges for regenerating the activated carbon and for reactivating the activated carbon. An inert gas is supplied through the tube in contact with the contaminated adsorbent material; the effluent gas including the stripped VOC's is supplied to an oxidizer for destruction. The oxidizer includes a stoichiometric burner providing combustion products for oxidizing the gaseous adsorbate and for providing carrier gas to the regenerator/reactivator.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: April 16, 2002
    Inventor: Harold R. Cowles
  • Patent number: 5904750
    Abstract: A new synthetic, pyrolized, spherical adsorbent, with a moving or fluidized bed VOC control/solvent recovery system, also described as a control/solvent recovery system.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: May 18, 1999
    Inventor: Harold R. Cowles
  • Patent number: 5676738
    Abstract: A new synthetic, pyrolized, spherical adsorbent, with a moving or fluidized bed VOC control/solvent recovery system, also described as a control/solvent recovery system.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: October 14, 1997
    Inventors: Lawrence Cioffi, Harold R. Cowles
  • Patent number: 4966611
    Abstract: An apparatus and process for adsorbing volatile organic compounds, or VOCs, and efficiently regenerating adsorbent material in an emission control system. Flue gas, emitted from a combustion unit burning an outside fuel and desorbed VOCs, is humidified and cooled with a set of water injectors. The resultant humidified flue gas is directed through the adsorbent material, which is rapidly superheated without pressurization. A method for controlling the regeneration cycle of the emission control system includes at least three sensor configurations including a breakthrough sensor, a desorbed gas sensor and a flue gas temperature sensor.
    Type: Grant
    Filed: March 22, 1989
    Date of Patent: October 30, 1990
    Assignee: Custom Engineered Materials Inc.
    Inventors: John C. Schumacher, Joseph C. McMenamin, Lawrence B. Anderson, Harold R. Cowles, Stephen M. Lord
  • Patent number: 4529707
    Abstract: A method for preparing a chlorosilane sample to enable colorimetric detection of the presence of minute amounts of boron impurities is provided. Detection of boron impurities below five parts per billion is contemplated.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: July 16, 1985
    Assignee: General Electric Company
    Inventors: Harold R. Cowles, William D. Kray