Stacy C Smith

US Patent:

6804954, Oct 19, 2004

Filed:

Jun 26, 2002

Appl. No.:

10/180911

Inventors:

Timothy R. Osterberg - Hubertus WI
Philip H. Pierce - West Bend WI
William P. Pari - Waukesha WI
Stacy L. Smith - Oconomowoc WI

Assignee:

Buell Motorcycle Company - East Troy WI

International Classification:

F02B 2702

US Classification:

60313, 60312, 60314, 60323

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.

US Patent:

7347045, Mar 25, 2008

Filed:

Jun 30, 2004

Appl. No.:

10/881189

Inventors:

Alexander J. Bozmoski - Brookfield WI, US
Timothy R. Osterberg - Hubertus WI, US
Michael P. Christopherson - Waukesha WI, US
Anthony L. Coffey - Cedarburg WI, US
William P. Pari - Waukesha WI, US
Michael R. Richter - East Troy WI, US
Stacy L. Smith - Oconomowoc WI, US
Richard G. Pierson - New Berlin WI, US
Michael A. Selwa - Oconomowoc WI, US

Assignee:

Harley-Davidson Motor Company Group, Inc. - Milwaukee WI

International Classification:

F02B 27/02

US Classification:

60312, 60287, 60324

Abstract:

The present invention provides a method of operating a dynamic exhaust system of a motorcycle engine. The method includes providing a valve in the exhaust system that is movable to direct exhaust gases between a first flow path through the exhaust system and a second flow path through the exhaust system. The method includes actuating the valve at a first speed to redirect exhaust gases from the first flow path to the second flow path and actuating the valve at a second speed greater than the first speed to redirect exhaust gases from the second flow path to the first flow path.

US Patent:

7424931, Sep 16, 2008

Filed:

Dec 29, 2005

Appl. No.:

11/321440

Inventors:

Stacy L. Smith - Oconomowoc WI, US

Assignee:

Harley-Davidson Motor Company Group, Inc. - Milwaukee WI

International Classification:

F01N 1/10
F01N 1/24
F01N 1/04

US Classification:

181256, 181252, 181227

Abstract:

A muffler for a motorcycle, the muffler including an outer tube and an inner tube disposed substantially within the outer tube. The inner tube includes a first end adapted to receive the exhaust gases from the engine, a second end opposite the first end adapted to release the exhaust gases to the environment, and first and second apertures positioned between the ends. The muffler also includes a mesh tube disposed between the outer tube and the inner tube. The mesh tube defines a chamber between the inner tube and the mesh tube such that the exhaust gases exit the inner tube through the first aperture into the chamber, and exit the chamber into the inner tube through the second aperture. The muffler also includes a noise attenuating material disposed between the mesh tube and the outer tube.

US Patent:

7493881, Feb 24, 2009

Filed:

Mar 12, 2007

Appl. No.:

11/684810

Inventors:

Stacy L. Smith - Oconomowoc WI, US
Michael E. Protasiewicz - Waukesha WI, US

Assignee:

Harley-Davidson Motor Company Group, Inc. - Milwaukee WI

International Classification:

F02M 35/14

US Classification:

12318421, 12318436

Abstract:

The present invention provides an air intake assembly including a first portion defining a first chamber through which airflow passes. The first portion is coupled to a first throttle member to allow communication from the first chamber to the first throttle member. The air intake assembly also includes a first filter element coupled to the first portion and positioned upstream of the first chamber, and a second portion defining a second chamber through which airflow passes. The second portion is coupled to a second throttle member to allow communication from the second chamber to the second throttle member. The air intake assembly further includes a second filter element coupled to the second portion and positioned upstream of the second chamber, and a conduit coupling the first and second portions. The conduit allows communication between the first and second chambers at a location downstream of the first and second filter elements.

US Patent:

20070256673, Nov 8, 2007

Filed:

Jun 20, 2007

Appl. No.:

11/765520

Inventors:

Alexander Bozmoski - Brookfield WI, US
Timothy Osterberg - Hubertus WI, US
Michael Christopherson - Waukesha WI, US
Anthony Coffey - Cedarburg WI, US
William Pari - Waukesha WI, US
Michael Richter - East Troy WI, US
Stacy Smith - Oconomowoc WI, US
Richard Pierson - New Berlin WI, US
Michael Selwa - Oconomowoc WI, US

Assignee:

Harley-Davidson Motor Company Group, Inc. - Milwaukee WI

International Classification:

F01N 7/08

US Classification:

123568110

Abstract:

The present invention provides a method of operating a dynamic exhaust system of a motorcycle engine. The method includes providing a valve in the exhaust system that is movable to direct exhaust gases between a first flow path through the exhaust system and a second flow path through the exhaust system. The method includes actuating the valve at a first speed to redirect exhaust gases from the first flow path to the second flow path and actuating the valve at a second speed greater than the first speed to redirect exhaust gases from the second flow path to the first flow path.