Patents by Inventor Henning Wolf

Henning Wolf 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).

  • Fluid-powered actuator having a cylinder with magnetic field detectors thereon and a magnetized piston rod
    Patent number: 4471304
    Abstract: For producing readings representative of the position of a fluid-powered actuator, a magnetic position-sensing system is used which is out of contact with the actuator's ram and is completely united with the actuator's cylinder. The sensing system has a periodic magnetic field pattern of the ram itself and a number of magnetic field detectors placed in an end plate of the actuator clear of the ram's outer face. The true position of the ram within one period of the magnetization pattern is measured by electrical interpolation based on output signals of the different magnetic field detectors.
    Type: Grant
    Filed: April 28, 1981
    Date of Patent: September 11, 1984
    Assignee: Festo-Maschinenfabrik Gottlieb Stoll
    Inventor: Henning Wolf