Patents by Inventor William E. Couillard

William E. Couillard 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).

  • Restriction indicator
    Patent number: 6976448
    Abstract: The present disclosure relates to a restriction indicator for an air cleaner system of an internal combustion engine. The restriction indicator includes a housing divided into first and second chambers by a diaphragm. A signal member is connected to the diaphragm. The signal member is moveable along an axis between a reset position and a first indicator position, and defines an axial opening within which a first retaining shoulder is located. A guide member is provided for guiding the signal member as the signal member is moved between the reset position and the first axial position. A retaining member is provided for retaining the signal member in the first indicator position. The retaining member extends within the axial opening of the signal member and includes at least two fingers that project radially outward from the axis. The fingers are configured to engage the first retaining shoulder to retain the signal member in the first indicator position.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: December 20, 2005
    Assignee: Donaldson Company, Inc.
    Inventors: William J. Krisko, William E. Couillard, Robert W. Diver, Wayne A. Kaul, Bernard A. Matthys, Larry R. Nepsund
  • Restriction indicator
    Publication number: 20040187765
    Abstract: The present disclosure relates to a restriction indicator for an air cleaner system of an internal combustion engine. The restriction indicator includes a housing divided into first and second chambers by a diaphragm. A signal member is connected to the diaphragm. The signal member is moveable along an axis between a reset position and a first indicator position, and defines an axial opening within which a first retaining shoulder is located. A guide member is provided for guiding the signal member as the signal member is moved between the reset position and the first axial position. A retaining member is provided for retaining the signal member in the first indicator position. The retaining member extends within the axial opening of the signal member and includes at least two fingers that project radially outward from the axis. The fingers are configured to engage the first retaining shoulder to retain the signal member in the first indicator position.
    Type: Application
    Filed: August 12, 2003
    Publication date: September 30, 2004
    Applicant: DONALDSON COMPANY, INC.
    Inventors: William J. Krisko, William E. Couillard, Robert W. Diver, Wayne A. Kaul, Bernard A. Matthys, Larry R. Nepsund
  • Restriction indicator
    Patent number: 6604486
    Abstract: The present disclosure relates to a restriction indicator for an air cleaner system of an internal combustion engine. The restriction indicator includes a housing divided into first and second chambers by a diaphragm. A signal member is connected to the diaphragm. The signal member is moveable along an axis between a reset position and a first indicator position, and defines an axial opening within which a first retaining shoulder is located. A guide member is provided for guiding the signal member as the signal member is moved between the reset position and the first axial position. A retaining member is provided for retaining the signal member in the first indicator position. The retaining member extends within the axial opening of the signal member and includes at least two fingers that project radially outward from the axis. The fingers are configured to engage the first retaining shoulder to retain the signal member in the first indicator position.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: August 12, 2003
    Assignee: Donaldson Company, Inc.
    Inventors: William J. Krisko, William E. Couillard, Robert W. Diver, Wayne A. Kaul, Bernard A. Matthys, Larry R. Nepsund