Patents by Inventor Terrance A. Bellei

Terrance A. Bellei 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).

  • Coordination arrangment for protective devices in electrical systems
    Patent number: 5402299
    Abstract: An arrangement to coordinate protective devices is provided by defining operation of the instantaneous characteristic portion of an upstream protective device to coordinate with a downstream current-limiting fuse based on the peak let-through current of the downstream current-limiting device, with instantaneous operation being set to occur only above the peak let-through current of the downstream current-limiting fuse. Accordingly, for fault currents which are seen by both the instantaneous device and the current-limiting device and that are within the ratings of the current-limiting device, the upstream device will not respond and the downstream current-limiting fuse will interrupt the fault, as intended.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: March 28, 1995
    Assignee: S&C Electric Company
    Inventor: Terrance A. Bellei