Patents by Inventor Paul Nan-Jiune Liang

Paul Nan-Jiune Liang 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).

  • Primary housing assembly for a motorcycle engine
    Patent number: 7395799
    Abstract: A primary housing for a motorcycle engine includes an inner housing that defines internal coupling apertures, transmission coupling apertures, and external coupling apertures. Internal fasteners extend through the internal coupling apertures and the transmission coupling apertures to couple the inner housing to the crankcase and the transmission. An outer housing defines coupling apertures that align with the external coupling apertures and fasteners extend through the coupling apertures, through the external coupling apertures, and into the engine crankcase to couple the inner and outer housings to the crankcase. A resonant damping device is rigidly or moveably coupled to an anti-node region of the outer housing to reduce noise emissions from the outer housing during engine operation.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: July 8, 2008
    Assignee: Harley-Davidson Motor Company Group, Inc.
    Inventors: Paul Nan-Jiune Liang, Richard G. Pierson, Scott J. Nash, Alexander J. Bozmoski, Peter J. Duvernell, Sean A. Rusch, William M. Kernen, John W. Schanz, Samir Mesanovic, Brian P. Dondlinger
  • Primary housing assembly for a motorcycle engine
    Patent number: 7174875
    Abstract: A primary housing for a motorcycle engine includes an inner housing that defines internal coupling apertures, transmission coupling apertures, and external coupling apertures. Internal fasteners extend through the internal coupling apertures and the transmission coupling apertures to couple the inner housing to the crankcase and the transmission. An outer housing defines coupling apertures that align with the external coupling apertures and fasteners extend through the coupling apertures, through the external coupling apertures, and into the engine crankcase to couple the inner and outer housings to the crankcase. A resonant damping device is rigidly or moveably coupled to an anti-node region of the outer housing to reduce noise emissions from the outer housing during engine operation.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: February 13, 2007
    Assignee: Harley-Davidson Motor Company Group, Inc.
    Inventors: Paul Nan-Jiune Liang, Richard G. Pierson, Scott J. Nash, Alexander J. Bozmoski, Peter J. Duvernell, Sean A. Rusch, William M. Kernen, John W. Schanz, Samir Mesanovic, Brian P. Dondlinger
  • PRIMARY HOUSING ASSEMBLY FOR A MOTORCYCLE ENGINE
    Publication number: 20070000469
    Abstract: A primary housing for a motorcycle engine includes an inner housing that defines internal coupling apertures, transmission coupling apertures, and external coupling apertures. Internal fasteners extend through the internal coupling apertures and the transmission coupling apertures to couple the inner housing to the crankcase and the transmission. An outer housing defines coupling apertures that align with the external coupling apertures and fasteners extend through the coupling apertures, through the external coupling apertures, and into the engine crankcase to couple the inner and outer housings to the crankcase. A resonant damping device is rigidly or moveably coupled to an anti-node region of the outer housing to reduce noise emissions from the outer housing during engine operation.
    Type: Application
    Filed: July 1, 2005
    Publication date: January 4, 2007
    Applicant: Harley-Davidson Motor Company Group, Inc.
    Inventors: Paul Nan-Jiune Liang, Richard Pierson, Scott Nash, Alexander Bozmoski, Peter Duvernell, Sean Rusch, William Kernen, John Schanz, Samir Mesanovic, Brian Dondlinger