Patents by Inventor Daniel E. Merriam

Daniel E. Merriam 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).

  • Heating control system which minimizes AC power line voltage fluctuations
    Patent number: 6727475
    Abstract: An electrical heater control system reduces flicker. The system includes an electrical heating system; an AC (alternating current) power source for supplying AC current to the electrical heating system; an AC power control device connected between the electrical heating system and the AC power source for controlling the supply of AC current to the electrical heating system; and a controller unit coupled to the AC power control device for activating the device at zero crossings of the AC power to minimize flicker in AC current supplied to the electrical heating system from the AC power source.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: April 27, 2004
    Assignee: Eastman Kodak Company
    Inventors: James W. Kennard, Daniel E. Merriam
  • Heating control system which minimizes AC power line voltage fluctuations
    Publication number: 20030019866
    Abstract: An electrical heater control system with reduced flicker comprising: an electrical heating system; an AC (alternating current) power source for supplying AC current to said electrical heating system; an AC power control device connected between said electrical heating system and said AC power source for controlling the supply of AC current to said electrical heating system; and a controller unit coupled to said AC power control device for activating said device at zero crossings of said AC power to minimize flicker in AC current supplied to said electrical heating system from said AC power source.
    Type: Application
    Filed: July 27, 2001
    Publication date: January 30, 2003
    Applicant: Eastman Kodak Company
    Inventors: James W. Kennard, Daniel E. Merriam