Patents by Inventor Philip H. Pierce

Philip H. Pierce 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).

  • Motorcycle exhaust system
    Patent number: 6804954
    Abstract: An exhaust system for use with a four-stroke engine having first and second cylinders. The cylinders generate exhaust pulses at uneven time intervals with respect to each other. The exhaust system includes a muffler and first and second exhaust pipes that communicate between the mufflers and the first and second cylinders, respectively. The first and second pipes being sized and shaped to deliver the exhaust pulses to the muffler at even time intervals with respect to each other.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: October 19, 2004
    Assignee: Buell Motorcycle Company
    Inventors: Timothy R. Osterberg, Philip H. Pierce, William P. Pari, Stacy L. Smith
  • Motorcycle exhaust system
    Publication number: 20040000140
    Abstract: An exhaust system for use with a four-stroke engine having first and second cylinders. The cylinders generate exhaust pulses at uneven time intervals with respect to each other. The exhaust system includes a muffler and first and second exhaust pipes that communicate between the mufflers and the first and second cylinders, respectively. The first and second pipes being sized and shaped to deliver the exhaust pulses to the muffler at even time intervals with respect to each other.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 1, 2004
    Applicant: Buell Motorcycle Company
    Inventors: Timothy R. Osterberg, Philip H. Pierce, William P. Pari, Stacy L. Smith