Patents by Inventor John R. Veleber

John R. Veleber 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).

  • Test set for measuring impedance and power dissipation of a crystal
    Patent number: 4001675
    Abstract: A crystal test set comprising an oscillator circuit in which a crystal under test is an integral part. The resistor substitution technique is employed in which the crystal and a variable resistor are alternately connected into the oscillator circuit. With the resistor in the circuit, the circuit is tuned to the resonance frequency of the crystal. The value of the resistor is adjusted to produce a voltage across the resistor equal to the voltage across the crystal. The adjusted value of the resistor is measured and corresponds to the crystal impedance. A measuring circuit, responsive to the voltage drop across the crystal, provides a direct measure of the crystal power dissipation.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: January 4, 1977
    Assignee: R F L Industries, Inc.
    Inventor: John R. Veleber