Patents Assigned to Spiral-Craft
  • Patent number: 4144683
    Abstract: In one preferred embodiment a two-part bracket assembly is provided for securing a downwardly sloping stringer to the upper of two building levels. Preferably, each part of the bracket is formed from a sheet of metal. One part of the bracket comprises a vertical flange which abuts against and is secured to the frame of the upper building level. A side panel of the bracket part lies in the vertical plane perpendicular to the plane of the flange and abuts against the side of the stringer. A flat support flange extends perpendicularly away from the lower edge of the side panel and extends underneath and abuts against the lower surface of the stringer. The plane of the support flange is angled downwardly relative to the vertical flange so that with the lower surface of the stringer abutting against the support flange, the stringer slopes downwardly from the upper building level.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: March 20, 1979
    Assignee: Spiral-Craft
    Inventor: Robert O. Dean
  • Patent number: 4015687
    Abstract: A novel step bracket is provided and is adapted for securing a step in a horizontal position to a downwardly sloping stringer. Preferably, the bracket is formed from a sheet of metal and comprises an upper horizontal portion secured to the bottom surface of a step. A generally triangularly shaped vertical section of the bracket extends downwardly from the horizontal portion and a flat portion is formed along the bottom edge of the vertical section and is perpendicular thereto. The plane of the flat portion is skewed relative to the horizontal plane so that the flat portion flatly abuts against the upper surface of the stringer. A downwardly extending vertical lip is formed along one edge of the flat portion section so that the lip flatly abuts against the side of the stringer. Fasteners are then used to secure the lip and the flat portion to the stringer and likewise to secure the upper horizontal portion to the step.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: April 5, 1977
    Assignee: Spiral-Craft
    Inventor: Robert Dean