Patents by Inventor Paul I. Fettinger

Paul I. Fettinger 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).

  • Alternating current power dividing or combining system
    Patent number: 4106089
    Abstract: Current transformers are utilized to combine the outputs of two 30.degree. phase shifted inverters to produce a three phase output which is low in fifth and seventh harmonics. The arrangement utilizes transformers having volt-ampere ratings which are very low compared to the power output of the inverters. The circuit may also be used to convert a three phase input to a multi-phase full wave rectified output without reflecting high fifth and seventh harmonics back into the line.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: August 8, 1978
    Assignee: The Garrett Corporation
    Inventor: Paul I. Fettinger