Patents by Inventor John S. Hasling

John S. Hasling 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).

  • Non-contact distance measurement system
    Patent number: 4160204
    Abstract: This distance measurement system employs the principle of electromagnetic induction to sense distances between an inductive transducer and an object. The inductive transducer forms a part of a signal phase network, and a means for comparing the signal of the inductive transducer to a reference signal provides linear output of the dimension between the transducer and an object. A circuit element such as a capacitor is connected in parallel with the inductive transducer to enhance the sensitivity and resolution of the measurement, to significantly reduce or eliminate error due to temperature, and to provide a high degree of output linearity relative to the distance measured.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: July 3, 1979
    Assignee: Kaman Sciences Corporation
    Inventors: William A. Holmgren, John S. Hasling, Richard W. Denny