Patents Assigned to Walter Bau-Aktiengesellschaft
  • Patent number: 6634147
    Abstract: In order to install or tension a brace (1) having a false bearing, for example a stay cable for a cable-stayed bridge, an external tensioning member or similar comprising a bundle of plastic-sheathed individual elements (2) made of steel, for example, wires, strands of wires or similar, the individual elements (2) are exposed in the area of the anchoring in order that they may be anchored at this point in holes (6) in an anchoring plate (7) which is supported by the building structure (9) by means of wedges (5). In order to ensure that when the strand is anchored the remaining plastic jacket (4) ends as close as possible to the anchoring plate (7), it is suggested that the plastic jacket be prevented from making any longitudinal movement during the extension of each individual element (2) which occurs during tensioning by a stop in the form of an annular shoulder (6d) which surrounds the element (2) in the anchoring area, and thereby compressed.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: October 21, 2003
    Assignee: Walter Bau-Aktiengesellschaft
    Inventor: Oswald Nützel
  • Patent number: 5435486
    Abstract: To make a ballast-free permanent rail way, an asphalt base is applied to a substructure comprised of concrete. Railway ties, which have a recess in the center on their underside, are laid on the asphalt base. In order to secure the ties against transverse forces and to assure accurate fitting and wear-free anchoring, the ties have a first bore in the center and the substructure has a blind bore. The blind bore is filled with an adhesive and then a dowel or a threaded rod is inserted into the blind bore which passes through a sliding spacer sleeve inserted into the first bore.
    Type: Grant
    Filed: April 21, 1994
    Date of Patent: July 25, 1995
    Assignee: Walter Bau-Aktiengesellschaft
    Inventors: Rudolf Gerlach, Ralf Walter, Bernhard Schad, Gunther Leykauf, Josef Eisenmann