Patents by Inventor Lars-Åke Mattsson

Lars-Åke Mattsson 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).

  • ARRANGEMENT FOR CONNECTING TUBE ELEMENTS IN A VENTILATION DUCT SYSTEM
    Publication number: 20100130119
    Abstract: In an arrangement for connecting tube elements of a ventilation duct system, the inner tube (3) has an abutment (7) for engagement with a matching abutment (8) of the outer tube (1). By insertion of the inner tube (3) into the outer tube (1) the abutments (7, 8) are brought into engagement in a plane (P) perpendicular to the direction of insertion for providing coupling between the abutments and thereby connection of the tubes (1, 3). The abutment (7) of the inner tube (3) is continuous along the circumference of the tube (3) and formed in a bent end portion (20) of the inner tube (3).
    Type: Application
    Filed: September 7, 2007
    Publication date: May 27, 2010
    Applicant: LINDAB AB
    Inventors: Pontus Andersson, Lars-Åke Mattsson, Sten Högman