Patents Assigned to Heinrich Stade
  • Patent number: 4027490
    Abstract: A self-sinking, axial passage foundation pile and method are provided. The pile is preformed with an axial bore which is capable of accommodating a rotatable shaft. At one end of the pile a drill bit is affixed to the shaft and at the other end a driving means is attached to the shaft in order to rotate the drill bit. In this configuration the rotational drilling torques are transmitted by the shaft without importing torque to the pile. Accordingly, the pile need not be specially reinforced to accommodate the bore hole drilling torques. Furthermore, the invention encompasses the novel method for installing the unique pile disclosed.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: June 7, 1977
    Assignee: Heinrich Stade
    Inventors: Heinrich Stade, Klaus David