Patents by Inventor Leo M. Chattler

Leo M. Chattler 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).

  • Instruments and systems for measuring cable capacitances
    Patent number: 4634964
    Abstract: A system for measuring the capacitance of an electric signal conductor, with particular interest on telephone cables. A waveform generator produces a test signal which is coupled to the conductor. The resultant signal emerging from the conductor is delivered to a receiver, and then to an integrator, to produce an output signal which is a direct digital measure of the conductor's capacitance.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: January 6, 1987
    Assignee: DCM Industries, Inc.
    Inventor: Leo M. Chattler
  • Line fault discriminator
    Patent number: 4605827
    Abstract: An auxiliary test system for use with a long transmission line such as one having a telephone at an end thereof whereby from a remote central test station a line may be tested for a short between wires, an open, an abnormal load condition or reversed connections and the relative location of such a fault condition determined.
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: August 12, 1986
    Assignee: DCM Industries, Inc.
    Inventor: Leo M. Chattler