Patents by Inventor Michael N. Barry

Michael N. Barry 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).

  • Pulse frequency modulation control for a heater
    Patent number: 4604517
    Abstract: A microcomputer is programmed to respond to the zero crossings of an AC power source to trigger a uniform pulse pattern of an integral number of AC cycles as the AC excitation to a heater element to maintain the temperature of the heater element essentially constant.
    Type: Grant
    Filed: May 20, 1985
    Date of Patent: August 5, 1986
    Assignee: Westinghouse Electric Corp.
    Inventor: Michael N. Barry