Patents by Inventor Tom Stoll

Tom Stoll 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).

  • Branch circuit emergency lighting transfer switch utilizing relay controls and safety relay for load power control
    Patent number: 12015305
    Abstract: A device, system and method for sequenced switching of a transfer switch. The method includes receiving a first monitoring signal indicating either one of an actuation of a fire alarm system or a first change of state in a primary power source from an on state to an off state. The method includes opening a first control relay connected to the primary power source and a second control relay connected to the secondary power source. The method further includes switching a safety relay from a first connection to the primary power source to a second connection to the secondary power source. The method further includes closing the first and second control relays so that the secondary power source energizes the lighting load.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: June 18, 2024
    Assignee: SIGNIFY HOLDING, B.V.
    Inventors: James Nourse, Tom Stoll, Madan Venn, Mohammad Amini