Patents by Inventor Richard Bernhart Kolbas

Richard Bernhart Kolbas 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: 6201678
    Abstract: A switch gear protection circuit for use in electric vehicles provides parallel circuit pathways for selectively coupling a power source to a capacitive load. A first pathway includes a main switch element that preferably is a high-current contactor or a high-current, low-voltage relay switch. A second pathway, which is in parallel with the first pathway, includes a low-voltage, low-current switch element in series with a circuit breaker element such as a fuse. When it is desirable to open the main switch element in the first pathway, the second pathway is closed. Once the second pathway is closed, the voltage drop across the first pathway is reduced and the first switch element can be opened. The parallel arrangement provides the ability to use low-voltage switch elements, that are relatively inexpensive compared to high-voltage components.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: March 13, 2001
    Assignee: Lear Automotive Dearborn, Inc.
    Inventors: Richard Bernhart Kolbas, Donald Paul Bilger, Andrew Matzkin-Bridger