Patents by Inventor Jan-Erik Forsman

Jan-Erik Forsman 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).

  • Pressure vessel having a filamentary wound structure
    Patent number: 5025943
    Abstract: A pressure vessel of fibre-reinforced plastic has an essentially cylindrical central portion (10) and two end portions (11, 12) and is preferably provided with a gas-tight liner (14). The central portion comprises a tangential winding (20) of the fibre material, in which the fibre material is oriented in an essentially tangential direction and an axial winding (21), located outside the tangential winding, of fibre material in which the fibre material is oriented in an essentially axial direction and the fibre material of which extends out into and forms a reinforcement of the fibre material in the end portions. The central portion, including its tangential winding and its axial winding, in each of its parts (10a, 20a, 21a) located nearest to an end portion, is formed with a diameter which decreases in a direction towards the end portion.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: June 25, 1991
    Assignee: ABB Plast AB
    Inventor: Jan-Erik Forsman