Patents by Inventor Rudolf Amberg

Rudolf Amberg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Device for detecting a relative change in distance between two measuring points, and its use
    Patent number: 4697921
    Abstract: As is known, the walls in cavity structures often become quiescent only after a prolonged period. In order to detect whether and to what extent rock displacements can occur, measuring instruments are installed at mutually opposite points (I, II) on walls (W1, W2). A pendulum (1) mounted on gimbals carries a light source (5) at the mounting point and a light receiver (3) at the pendulum mass (2). On the opposite wall (W2), a mirror (4) is arranged at an inclination .alpha. relative to the vertical. A displacement of the mirror by T.sub.x or by T.sub.Z leads to an indication T.sub.Z at the light receiver (3).
    Type: Grant
    Filed: September 12, 1984
    Date of Patent: October 6, 1987
    Assignee: Amberg Messtechnik AG
    Inventors: Rudolf Amberg, Werner Alder