Patents by Inventor Ivar Johansson

Ivar Johansson 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).

  • Patent number: 4430804
    Abstract: A device for setting the inclination of a reference object such as a mirror or the like, used as a reference for lining up, levelling in, etc. The mirror (10) is rotatably balanced about an axle (12) and a portion thereof below said axle is provided with a moveable bob (14). A displacement of the bob causes the desired inclination of the mirror about the axle.
    Type: Grant
    Filed: November 24, 1981
    Date of Patent: February 14, 1984
    Inventors: Bo Nordgren, Ivar Johansson
  • Patent number: 4012859
    Abstract: A firearm mechanism, especially for automatic or semi-automatic shotguns, with a covering upwardly closed breech-block housing consisting of two mutually fitting and fixedly attached parts, an outer casing part made from sheet by pressing and a precision-cast inner part, which is stiffening the outer part and is provided with guiding surfaces for movable parts in the mechanism, e.g. a breech-block. The outer part is stiffened also by a lower mounting, closing the housing and having upstanding walls projecting in the housing. Cartridge feeding catches are arranged in the lower mounting, attached to its upstanding side walls.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: March 22, 1977
    Assignee: Forenade Fabriksverken
    Inventors: Lennart Johan Ivar Johansson, Eric Vilhelm Wallberg, Bjorn Weine Lindqvist