Patents by Inventor Christopher P. Nystrom

Christopher P. Nystrom 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).

  • Rectifier-inverter and line voltage regulator system
    Patent number: 3999077
    Abstract: A constant voltage, constant frequency, uninterruptible a.c. power supply having a line voltage regulator, a rectifier-inverter with an emergency battery power supply and a transfer switch for selectively connecting the line voltage regulator and rectifier-inverter to a load. Under normal conditions, the line voltage regulator and rectifier inverter derive their operating power from the power line and are both connected to the load. If the fault detection system detects a power line fault, it causes the transfer switch to disconnect the line voltage regulator from the load and the rectifier-inverter supplies power to the load from the emergency battery power supply. If the fault detection system detects a rectifier-inverter fault, it causes the transfer switch to disconnect the rectifier-inverter from the load. A synchronization control system regulates the phase of the rectifier-inverter.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: December 21, 1976
    Assignee: Sola Basic Industries, Inc.
    Inventors: Henry S. Borkovitz, Christopher P. Nystrom, Robert P. Stirniman