Patents by Inventor Jeffrey Hallsten

Jeffrey Hallsten 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).

  • Tank cover structure
    Patent number: 5325646
    Abstract: A cover for tank is formed from a plurality of panels attached together by cross members. The cover includes means for sealing the panels to the cross members, and means for sealing the panels and the cross members to the tank. The panels are constructed from a multiplicity of edge-to-edge planks. The planks may be connected together without welds, and the panels may be connected to the cross members without welds. The cover may be in the shape of an arch, or the shape of a dome. In another embodiment a dome-shaped cover may be formed from a plurality of panels each having the shape of a section of a circle. Each panel is connected between an adjacent pair of a plurality of radial members arranged in a radial pattern.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: July 5, 1994
    Assignee: Hallsten Supply Co.
    Inventors: Jeffrey A. Hallsten, John Hallsten
  • Extruded metal plank for an interlocking field-erectable deck or cover structure
    Patent number: D345222
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: March 15, 1994
    Assignee: Hallsten Supply Co.
    Inventors: Jeffrey A. Hallsten, John Hallsten
  • Extruded metal beam tube for an interlocking field-erectable deck or cover structure
    Patent number: D358671
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: May 23, 1995
    Assignee: Hallsten Corporation
    Inventor: Jeffrey A. Hallsten
  • Extruded metal structural connecting member for securing planks to beams in an interlocking field-erectable deck or cover structure
    Patent number: D359565
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: June 20, 1995
    Assignee: Hallsten Corporation
    Inventor: Jeffrey A. Hallsten