Patents by Inventor Robert Howard Griffioen

Robert Howard Griffioen 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).

  • Pilot assembly
    Patent number: 6293784
    Abstract: A pilot assembly includes a two part pilot housing and an orifice member mounted between the two housing parts. One housing part is fixable to a mount in a gas burning device and has a through passage. The orifice member is received in the passage. At least a portion of the other housing part is received in the passage to fix the orifice member in the passage.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: September 25, 2001
    Inventor: Robert Howard Griffioen
  • Dual orifice pilot assembly
    Patent number: 6162048
    Abstract: A pilot assembly for producing a pilot flame including a pilot which includes a housing and a multiple orifice member mounted to the housing. The housing includes a gas flow passageway providing gas fuel from a gas source to the pilot flame. The orifice member positions one orifice in the passageway for metering the rate of gas flowing through the passageway, and hence combusted by the pilot, according to the type of gas. The orifice member can be moved relative to the housing so that another orifice is in the passageway for metering the gas when the pilot receives a different type of gas.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: December 19, 2000
    Assignee: Robert Howard Griffioen
    Inventors: Robert Howard Griffioen, Randall Raymond Dillivan, Douglas Charles Johnson, Don Alan Weber
  • Pilot assembly
    Patent number: 6027335
    Abstract: A pilot assembly includes a two part pilot housing and an orifice member mounted between the two housing parts. One housing part is fixable to a mount in a gas burning device and has a through passage. The orifice member is received in the passage. At least a portion of the other housing part is received in the passage to fix the orifice member in the passage.
    Type: Grant
    Filed: February 3, 1999
    Date of Patent: February 22, 2000
    Inventor: Robert Howard Griffioen