Patents by Inventor Karl Fahrion

Karl Fahrion 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).

  • Duct connector
    Patent number: 4440426
    Abstract: Apparatus for connecting flex duct to a sheet metal collar wherein piercing members are connected to the sheet metal collar. The piercing members are located adjacent one end of the sheet metal collar with the end of the piercing member next adjacent the end of the collar connected to the collar. The piercing members have an apical end that is oppositely disposed from the end connected to the sheet metal collar such that, when the flex duct is forced over the piercing member and then drawn in the opposite direction, the apical end pierces the scrim of the flex duct and the piercing member entraps the wire helix to secure the collar to the flex duct.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: April 3, 1984
    Inventor: Karl Fahrion
  • Method of connecting flexible tubular duct and a connector
    Patent number: 4404726
    Abstract: Apparatus for connecting flex duct to a sheet metal collar wherein piercing members are connected to the sheet metal collar. The piercing members are located adjacent one end of the sheet metal collar with the end of the piercing member next adjacent the end of the collar connected to the collar. The piercing members have an apical end that is oppositely disposed from the end connected to the sheet metal collar such that, when the flex duct is forced over the piercing member and then drawn in the opposite direction, the apical end pierces the scrim of the flex duct and the piercing member entraps the wire helix to secure the collar to the flex duct.
    Type: Grant
    Filed: July 29, 1981
    Date of Patent: September 20, 1983
    Inventor: Karl Fahrion