Patents Assigned to Dycherhoff & Widmann Ag
  • Patent number: 4640068
    Abstract: An anchoring device for a prestressing location can also serve as a coupling location for tendons in prestressed concrete where a subsequent bond is provided for the tendons. The anchoring device includes an anchoring member containing a plurality of bores divided into two separate groups, with each group arranged to anchor individual tendon elements extending into the anchoring member from an opposite direction. Each bore has an axially extending frusto-conical section and a cylindrical section extending from the smaller diameter end of the frusto-conical section. The frusto-conical sections in one group of bores are axially offset from the frusto-conical sections in the other group of bores. The bores in one group are filled with a plastic corrosion protection material, such as grease.
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: February 3, 1987
    Assignee: Dycherhoff & Widmann Ag
    Inventors: Dieter Jungwirth, Also Mannhart