Patents by Inventor Ed Applegate

Ed Applegate 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).

  • Adjustable strobe with temperature stabilization
    Patent number: 5355116
    Abstract: A strobe alarm circuit includes a voltage source circuit which has a capacitor connected across its output terminals. The voltage source circuit is connected to a flash circuit which includes a flashtube shunted by a trigger circuit. The trigger circuit causes the flashtube to flash when the voltage across the voltage source circuit capacitor reaches a predetermined threshold firing voltage. A resistor divider network is employed in the trigger circuit to ensure that the flashtube is triggered at virtually the same instant as the voltage across the capacitor exceeds the trigger threshold value.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: October 11, 1994
    Assignee: Wheelock
    Inventors: Ed Applegate, Joseph Kosich, John W. Curran