Patents by Inventor Harold Wilbur Lord

Harold Wilbur Lord 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).

  • Patent number: 4047120
    Abstract: A protective coupling circuit is located between the D.C. supply voltage the amplifier components of a push-pull switching amplifier to suppress transients created during switching. The coupling circuit comprises a power supply filter with an inductor coil and capacitor, and circuitry for limiting the voltage on the individual switching elements and the output coil. Excess voltages caused by transients are fed to the power supply filter. In an alternative embodiment the power supply filter inductor coil is actually an auxiliary winding on the amplifier output transformer rather than a separate coil. This allows for use of some smaller capacity circuit elements.
    Type: Grant
    Filed: July 15, 1976
    Date of Patent: September 6, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Harold Wilbur Lord, Jimmy Dale Rogers