Patents by Inventor Lennart Sjoo

Lennart Sjoo 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).

  • Ammunition unit in the form of a shell
    Patent number: 6032583
    Abstract: The present invention relates to an ammunition unit in the form of a shell or the like, with at least two warheads connected via a supporting structure. In order to prevent the impact from the first activated warhead reaching the warheads situated to the rear, and to prevent an interference effect on these warheads, according to the invention a structure-dividing charge is arranged in the supporting structure in order to divide the structure into two separate parts.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: March 7, 2000
    Assignee: Bofors AB
    Inventors: Gustav Karlstedt, Jyrki Helander, Lennart Sjoo, Miroslaw Benendo, Par Andersson, Richard Lindvall
  • Reactive armor arrangement
    Patent number: 4881448
    Abstract: A reactive armor arrangement consisting of two mutually parallel metal sheets with an interior sheet of incompressible formaldehyde compound. Upon impact with a hollow jet explosive charge, the incompressible layer causes the outer metal sheets to push outwardly into the path of the hollow jet explosive charge.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: November 21, 1989
    Assignee: Affarsverket FFV
    Inventors: Gunnar Medin, Erik Olsson, Lennart Sjoo, Roger Lundgren