Patents by Inventor John H. Toy

John H. Toy 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).

  • System and method for providing an uninterruptible power supply to a critical load
    Patent number: 6191500
    Abstract: A system and method for providing an uninterrupted supply of power to a critical load includes at least two uninterruptible power supply UPS modules that receive power from separate utility sources. A controller controls the UPS modules so that the output power from one UPS module is substantially in-phase with the output power from the other UPS module. As a result, the output powers from the UPS modules can be combined with one another to provide a sufficient source of uninterruptible power to the critical load regardless of the phase difference in the power provided by the separate utility sources.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: February 20, 2001
    Assignee: Kling Lindquist Partnership, Inc.
    Inventor: John H. Toy