Patents by Inventor Timothy J. Kirker

Timothy J. Kirker 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).

  • Exhaust flow mixers and nozzles
    Patent number: 4543784
    Abstract: An exhaust mixer of the multi-lobed type for a mixed stream turbofan. In order to promote cortical mixing between the turbine exhaust stream and the fan air stream, the flow surfaces defining the lobes--and the troughs between the lobes--are twisted between their upstream and downstream ends so that opposing sides of each lobe and each trough comprise flow surfaces twisted in opposing senses. Noise suppressing jet propulsion nozzles can be produced with a similar construction.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: October 1, 1985
    Assignee: Rolls-Royce Limited
    Inventor: Timothy J. Kirker
  • By-pass gas turbine engines
    Patent number: 4227370
    Abstract: In a by-pass gas turbine engine, the by-pass exhaust flow is mixed with the core engine exhaust flow internally of the engine before passage through the final exhaust (propulsion) nozzle. The exhaust flow mixer comprises alternate inwardly and outwardly inclined substantially planar "fingers", which are arrayed around and attached to the circumference of the aft end of the core engine and extend generally downstream thereof. The fingers are effective to deflect the exhaust flows by virtue of the Coanda effect.
    Type: Grant
    Filed: October 24, 1978
    Date of Patent: October 14, 1980
    Assignee: Rolls-Royce Limited
    Inventor: Timothy J. Kirker