Patents by Inventor Ashley N. Graybill

Ashley N. Graybill 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).

  • Apparatus and method for variable mode mixing of combustion reactants
    Patent number: 11187408
    Abstract: An apparatus includes first and second mixer tubes. The first mixer tube contains a first gas flow passage having an inlet communicating with the source of fuel gas and an outlet to a combustion chamber. The second mixer tube contains a second gas flow passage having an inlet communicating with the source of combustion air and an outlet to the combustion chamber. The apparatus further includes premix control means for forming fuel gas-combustion air premix in the second passage by directing fuel gas from the first passage into the second passage, and for alternatively forming fuel gas-combustion air premix in the first passage by directing combustion air from the second passage into the first passage.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: November 30, 2021
    Assignee: Fives North American Combustion, Inc.
    Inventors: David S. Hausen, Dennis E. Quinn, Ashley N. Graybill
  • APPARATUS AND METHOD FOR VARIABLE MODE MIXING OF COMBUSTION REACTANTS
    Publication number: 20200340667
    Abstract: An apparatus includes first and second mixer tubes. The first mixer tube contains a first gas flow passage having an inlet communicating with the source of fuel gas and an outlet to a combustion chamber. The second mixer tube contains a second gas flow passage having an inlet communicating with the source of combustion air and an outlet to the combustion chamber. The apparatus further includes premix control means for forming fuel gas-combustion air premix in the second passage by directing fuel gas from the first passage into the second passage, and for alternatively forming fuel gas-combustion air premix in the first passage by directing combustion air from the second passage into the first passage.
    Type: Application
    Filed: April 25, 2019
    Publication date: October 29, 2020
    Applicant: Fives North American Combustion, Inc.
    Inventors: David S. Hausen, Dennis E. Quinn, Ashley N. Graybill