Patents by Inventor William J. Krisko

William J. Krisko 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).

  • Publication number: 20040139707
    Abstract: A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has first and second ends. The second panel section has third and fourth ends. The first and third ends have a first distance therebetween while the second and fourth ends have a second distance therebetween. The second distance is generally greater than the first distance. The first and second panel sections and the second frame structure define an air flow aperture. A seal arrangement circumscribes the air flow aperture and projects outwardly from the second frame structure. The first frame structure defines a first receiver indent. Assemblies and methods are also included.
    Type: Application
    Filed: January 12, 2004
    Publication date: July 22, 2004
    Applicant: Donaldson Company, Inc.
    Inventors: Gary R. Gillingham, Stan M. Koehler, William J. Krisko, Thomas G. Miller, Winston E. Olson, Fred H. Wahlquist, Ervin P. Fuchs, Eugene D. Wilson
  • Patent number: 6676721
    Abstract: A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has first and second ends. The second panel section has third and fourth ends. The first and third ends have a first distance therebetween while the second and fourth ends have a second distance therebetween. The second distance is generally greater than the first distance. The first and second panel sections and the second frame structure define an air flow aperture. A seal arrangement circumscribes the air flow aperture and projects outwardly from the second frame structure. The first frame structure defines a first receiver indent. Assemblies and methods are also included.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: January 13, 2004
    Assignee: Donaldson Company, Inc.
    Inventors: Gary R. Gillingham, Stan M. Koehler, William J. Krisko, Thomas G. Miller, Winston E. Olson, Fred H. Wahlquist, Ervin P. Fuchs, Eugene D. Wilson
  • 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
  • Patent number: 4647373
    Abstract: A renewable, multi-layered filter apparatus (20) is disclosed. The filter apparatus (20) includes a housing (22) having a fluid inlet (24) for ingress of a contaminated fluid flow and a fluid outlet (26) for egress of a filtered fluid flow. A filter element (28) is supported intermediate of the fluid inlet (24) and the fluid outlet (26). The filter element (28) includes a nested, pleated filter media (30) having multiple filter media layers (30a,b,c) which are independently removable from the filter element (28) so as to enable renewal of the filter function by simply removing one of the filter layers (30a,b,c).
    Type: Grant
    Filed: August 30, 1984
    Date of Patent: March 3, 1987
    Assignee: Donaldson Company, Inc.
    Inventors: Joseph C. Tokar, William J. Krisko
  • Patent number: 4198219
    Abstract: An air inlet grille for an engine compartment of a military ground vehicle sed in dusty atmospheres, e.g. the desert. The grille comprises a number of relatively thick air-guiding louvers of sinuous shape, each louver being relatively thick in the transverse direction so that the grille has ballistic properties, i.e. the ability to deflect or intercept enemy projectiles directed toward the engine disposed behind the grille. Each louver includes or contains a dust removal mechanism immediately downstream from each air-turn surface on the louver, whereby the grille is enabled to clean the dust-laden air, thereby preventing ambient dust from coating the engine and/or the air passages of engine coolers and radiators.
    Type: Grant
    Filed: November 22, 1978
    Date of Patent: April 15, 1980
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: William J. Krisko