Patents by Inventor William Haffner

William Haffner 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).

  • Deflector exhaust nozzle for AS350/EC130 and for other single engine helicopters
    Patent number: 12584433
    Abstract: A method of fitting a single engine helicopter having a tail boom to avoid exhaust gases at the tail boom, the single engine helicopter comprising a longitudinally centrally positioned single engine and a corresponding symmetrically positioned exhaust manifold and symmetrically positioned rear tail boom, and the method includes securing to the exhaust manifold a curved and bent deflector exhaust nozzle, the deflector exhaust nozzle configured to receive exhaust from the single engine and direct the exhaust gases away from the tail boom. A single engine helicopter includes a longitudinally centrally positioned single engine and a corresponding symmetrically positioned exhaust manifold and a symmetrically positioned rear tail boom, the helicopter having a curved and bent deflector exhaust nozzle secured to the manifold, the deflector exhaust nozzle configured to receive exhaust gases from the single engine and direct the exhaust away from the tail boom.
    Type: Grant
    Filed: November 20, 2024
    Date of Patent: March 24, 2026
    Assignee: PACIFIC CROWN HELICOPTERS
    Inventor: William Haffner
  • DEFLECTOR EXHAUST NOZZLE FOR AS350/EC130 AND FOR OTHER SINGLE ENGINE HELICOPTERS
    Publication number: 20250075652
    Abstract: A method of fitting a single engine helicopter having a tail boom to avoid exhaust gases at the tail boom, the single engine helicopter comprising a longitudinally centrally positioned single engine and a corresponding symmetrically positioned exhaust manifold and symmetrically positioned rear tail boom, and the method includes securing to the exhaust manifold a curved and bent deflector exhaust nozzle, the deflector exhaust nozzle configured to receive exhaust from the single engine and direct the exhaust gases away from the tail boom. A single engine helicopter includes a longitudinally centrally positioned single engine and a corresponding symmetrically positioned exhaust manifold and a symmetrically positioned rear tail boom, the helicopter having a curved and bent deflector exhaust nozzle secured to the manifold, the deflector exhaust nozzle configured to receive exhaust gases from the single engine and direct the exhaust away from the tail boom.
    Type: Application
    Filed: November 20, 2024
    Publication date: March 6, 2025
    Inventor: WILLIAM HAFFNER
  • DEFLECTOR EXHAUST NOZZLE FOR AS350/EC130 AND FOR OTHER SINGLE ENGINE HELICOPTERS
    Publication number: 20220154613
    Abstract: A method of fitting a single engine helicopter having a tail boom to avoid exhaust gases at the tail boom, the single engine helicopter comprising a longitudinally centrally positioned single engine and a corresponding symmetrically positioned exhaust manifold and symmetrically positioned rear tail boom, and the method includes securing to the exhaust manifold a curved and bent deflector exhaust nozzle, the deflector exhaust nozzle configured to receive exhaust from the single engine and direct the exhaust gases away from the tail boom. A single engine helicopter includes a longitudinally centrally positioned single engine and a corresponding symmetrically positioned exhaust manifold and a symmetrically positioned rear tail boom, the helicopter having a curved and bent deflector exhaust nozzle secured to the manifold, the deflector exhaust nozzle configured to receive exhaust gases from the single engine and direct the exhaust away from the tail boom.
    Type: Application
    Filed: November 15, 2021
    Publication date: May 19, 2022
    Inventor: WILLIAM HAFFNER
  • Utility lighter
    Patent number: D377736
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: February 4, 1997
    Assignee: Scripto-Tokai Corporation
    Inventors: Kenji Iwagaki, William Haffner