Patents Assigned to Hornell Elektrooptik AB
  • Welder's helmet
    Patent number: 5191468
    Abstract: A welder's helmet (1) provided with a fast filter (3) which is controlled by welding light and through which the wearer of the helmet can see clearly in the absence of welding light. In accordance with the invention, the helmet is complemented with side windows (4) operative to filter out IR and UV radiation and having a moderate filter effect for visible light.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: March 2, 1993
    Assignee: Hornell Elektrooptik AB
    Inventor: Kjell Mases
  • Protective helmet
    Patent number: D398421
    Type: Grant
    Filed: June 11, 1996
    Date of Patent: September 15, 1998
    Assignee: Hornell Elektrooptik AB
    Inventors: Carl-Goran Crafoord, H.ang.kan Bergkvist, Kjell Mases, Rutger Belin