Patents by Inventor Donald W. Larcen

Donald W. Larcen 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).

  • Rotary burner control
    Patent number: 4113418
    Abstract: An improved embodiment of the rotary fuel-steam burner system described in copending application Ser. No. 664,214 filed Mar. 5, 1976, now U.S. Pat. No. 4,035,133.A fuel flow set point signal is delivered to a diaphragm motor valve to set a desired fuel flow-area therein; and, a differential pressure regulator maintains a correspondingly desired pressure drop thereacross.In a sonic flow embodiment regulator steam flow is controlled by a differential pressure regulator having its low pressure side connected to a ratio control device and its high pressure side connected to a downstream point in the steam line.
    Type: Grant
    Filed: June 8, 1977
    Date of Patent: September 12, 1978
    Inventor: Donald W. Larcen
  • Rotary burner control
    Patent number: 4035133
    Abstract: A system and method for controlling a rotary burner of the type in which attempts have been made to maintain predetermined differential pressures between steam and fuel delivered thereto. The fuel flow is adjusted to provide a given heat release; and without regard to pressure, the steam flow is adjusted in accordance with a predetermined ratio to correspond to the given fuel flow.
    Type: Grant
    Filed: March 5, 1976
    Date of Patent: July 12, 1977
    Inventor: Donald W. Larcen