Patents by Inventor Nils Gellerstedt

Nils Gellerstedt 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).

  • Flare charge insulation, a method of its manufacture and a flare charge manufactured according thereto
    Patent number: 4833992
    Abstract: The present invention relates to a novel type of flare charge insulation for retally burning flare charges. The flare charge insulation according to the present invention is produced by compaction of a particulate material or granulate of a mean particle size which does not exceed 1 mm. The major component parts of the granulate are an organic metal salt, and minor amounts of a combustible binder. Moreover, particulate melamine may be included in an amount of up to 20 weight per cent.The present invention also includes a novel method of producing flare charges in which both the flare charge and flare charge insulation are terminally compacted together to form a continuous unit.Consequently, the present invention also relates to the finished flare charge manufactured according thereto.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: May 30, 1989
    Assignee: Aktiebolaget Bofors
    Inventors: Nils Gellerstedt, Siv Johansson
  • Method of and device for pressing pyrotechnical charges
    Patent number: 4208945
    Abstract: Improved apparatus and method are disclosed for compacting pyrotechnical charges into low strength cases. The charges are precompacted outside the cases and then inserted into the cases for final compaction.
    Type: Grant
    Filed: October 4, 1978
    Date of Patent: June 24, 1980
    Assignee: Aktiebolaget Bofors
    Inventors: Tore Davegardh, Nils Gellerstedt, Folke Sahlin