Patents by Inventor Charles G. Albers

Charles G. Albers 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).

  • Foam core duct system protected by metal sleeves with integral flanges
    Patent number: 11835252
    Abstract: This application relates to a duct system, including a duct section that includes a foam body having a first end face and a second end face, where the foam body defines a duct passage extending from the first end face to the second end face, and a sleeve that directly or indirectly covers the foam body, the first sleeve including a plurality of side walls, where at least one side wall has an integral end portion that is folded back to define at least a portion of an integral, peripheral coupling flange around an end face of the foam body.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: December 5, 2023
    Assignee: ALBERS MECHANICAL CONTRACTORS, INC.
    Inventor: Charles G. Albers
  • Foam core duct system protected by metal sleeves with integral flanges
    Patent number: 10976070
    Abstract: This application relates to a duct system, including a duct section that includes a foam body having a first end face and a second end face, where the foam body defines a duct passage extending from the first end face to the second end face, and a sleeve that directly or indirectly covers the foam body, the first sleeve including a plurality of side walls, where at least one side wall has an integral end portion that is folded back to define at least a portion of an integral, peripheral coupling flange around an end face of the foam body.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: April 13, 2021
    Assignee: ALBERS MECHANICAL CONTRACTORS, INC.
    Inventor: Charles G. Albers