Patents Assigned to Vavra Plat AB of Kungalv
  • Joining arrangement for ventilation ducts and the like
    Patent number: 4046409
    Abstract: An arrangement for joining of ventilation ducts and the like comprises a first and a second member intended for connection with a first duct end and a second duct end resp., the second member being provided with an upright stiffening leg and a horizontal leg terminated by a hook-shaped member, which can be snapped over a raised edge of the first member. The first member comprises a horizontal lip intended to be received by the second member.
    Type: Grant
    Filed: July 14, 1976
    Date of Patent: September 6, 1977
    Assignee: Vavra Plat AB of Kungalv
    Inventor: Eskil Virgin