Patents by Inventor Alvar Lundgren

Alvar Lundgren 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 the connection of tubes
    Patent number: 5054951
    Abstract: A mechanical connection arrangement for tubes arranged alongside or after one another comprises a coupling ring or coupling piece (5,9) positioned at the end of the tube and surrounding the tube, a profiled rod (8) of constant cross-section facing inwards from the end of the tube (1,2), and at least one attachment device (6,7) arranged in the wall of the tube and at a certain distance from its end so executed as to engage with and to force the profiled rod (8) into contact with the internal surface of the tube (1,2) at contact points along two narrow contact lines or contact areas (14,15) running in the longitudinal sense of the tube (1,2).
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: October 8, 1991
    Inventors: Alvar Lundgren, Anders Lundgren
  • Support plate for potted plants
    Patent number: D286759
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: November 18, 1986
    Assignee: Renovo Konsult AB
    Inventors: Alvar Lundgren, Anders Lundgren, Bertil Holmgren
  • Rear mounted carrier
    Patent number: D374209
    Type: Grant
    Filed: April 12, 1994
    Date of Patent: October 1, 1996
    Assignee: Industri AB Thule
    Inventor: Alvar Lundgren
  • Rear mounted bike carrier
    Patent number: D378289
    Type: Grant
    Filed: April 12, 1994
    Date of Patent: March 4, 1997
    Assignee: Industri AB Thule
    Inventor: Alvar Lundgren