Patents Assigned to Design Research Marketing (Proprietary) Limited
  • Patent number: 4355918
    Abstract: This invention relates to a connector for the elongated frame elements of a structural space frame and to a space frame employing the connectors. The connectors consist of three elements which are stacked one on the other on a common axis with the face of each element which abuts that of another including recessed formations which between the opposite element faces define sockets for trapping the headed ends of space frame members with the axes of the sockets between a first pair of element faces lying in a common plane and those between the second pair of faces being inclined relatively to and on the same side of the plane containing the axes of the sockets between the first pair of element faces and means for clamping the elements in the direction of their common axis.
    Type: Grant
    Filed: November 25, 1980
    Date of Patent: October 26, 1982
    Assignee: Design Research Marketing (Proprietary) Limited
    Inventor: Marius Van Vliet
  • Patent number: 4325648
    Abstract: A space frame has nodes which are made up of juxtaposed plates with the ends of the frame chords sandwiched between them. The chord ends are equipped with collars that have projecting diametrically opposed nibs that fit into corresponding apertures in the plates. The collars may be cruciform in shape, with shoulders between the nibs against which the plates bear to prevent direct clamping of the chords. A second pair of plates to receive the ends of diagonal chords may be bolted to the first pair by a single bolt passed through registering central holes in the plates.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: April 20, 1982
    Assignee: Design Research Marketing (Proprietary) Limited
    Inventors: Michael C. De Bliquy, Branko Nikolic