Patents by Inventor Randolph G. Zoran

Randolph G. Zoran 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).

  • Exhaust Aftertreatment System with Compliantly Coupled Sections
    Publication number: 20090084094
    Abstract: An exhaust aftertreatment system includes first and second exhaust tubes or assemblies and a coupler compliantly permitting movement of one of the exhaust tubes relative to the other along at least one of axial and transverse directions.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 2, 2009
    Inventors: James R. Goss, Randolph G. Zoran
  • Serviceable exhaust aftertreatment assembly and method
    Publication number: 20080060351
    Abstract: An exhaust aftertreatment assembly and method enables lateral removal of an aftertreatment component from between first and second assembly components for servicing.
    Type: Application
    Filed: September 7, 2006
    Publication date: March 13, 2008
    Inventors: Kenneth Pawson, Jay V. Warner, Patrick M. Pierz, Randolph G. Zoran
  • Exhaust aftertreatment device with star-plugged turbulator
    Patent number: 7328572
    Abstract: An exhaust aftertreatment device has a turbulator provided by a tube having a perforated star-plugged downstream end.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: February 12, 2008
    Assignee: Fleetguard, Inc.
    Inventors: Thomas L. McKinley, Randolph G. Zoran
  • Filter coating, winding, finishing and manufacturing system
    Patent number: 6887343
    Abstract: A coating system (66, 68), winding system (158), finishing system (274, 276) and manufacturing system (FIGS. 6, 7, 22-29) is provided for spiral-wound fluted filter media (74, 130).
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: May 3, 2005
    Assignee: Fleetguard, Inc.
    Inventors: Murray R. Schukar, Brian K. Fillbach, Gary J. Frank, Craig A. Clayton, Douglas P. Marquis, Matthew P. Henrichsen, Robert K. Miller, William C. Haberkamp, Darryl J. Gust, Kurt M. A. Badeau, Steven D. Stokstad, Travis E. Goodlund, Thomas A. Fosdal, O. Michael Bowling, Randolph G. Zoran
  • Filter coating, winding, finishing and manufacturing system
    Publication number: 20040118771
    Abstract: A coating system (66, 68), winding system (158), finishing system (274, 276) and manufacturing system (FIGS. 6,7, 22-29) is provided for spiral-wound fluted filter media (74, 130).
    Type: Application
    Filed: December 20, 2002
    Publication date: June 24, 2004
    Inventors: Murray R. Schukar, Brian K. Fillbach, Gary J. Frank, Craig A. Clayton, Douglas P. Marquis, Matthew P. Henrichsen, Robert K. Miller, William C. Haberkamp, Darryl J. Gust, Kurt M. A. Badeau, Steven D. Stokstad, Travis E. Goodlund, Thomas A. Fosdal, O. Michael Bowling, Randolph G. Zoran
  • Exhaust aftertreatment device with flow diffuser
    Patent number: 6712869
    Abstract: An exhaust aftertreatment device has a diffuser upstream of an aftertreatment element such as a catalyst element or a filter element such as a diesel particulate filter. The diffuser de-focuses centralized velocity force flow against the aftertreatment element from the inlet in a space efficient and flow efficient construction.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: March 30, 2004
    Assignee: Fleetguard, Inc.
    Inventors: C. Raymond Cheng, Z. Gerald Liu, Randolph G. Zoran
  • Exhaust aftertreatment device with flow diffuser
    Publication number: 20030159414
    Abstract: An exhaust aftertreatment device has a diffuser upstream of an aftertreatment element such as a catalyst element or a filter element such as a diesel particulate filter. The diffuser de-focuses centralized velocity force flow against the aftertreatment element from the inlet in a space efficient and flow efficient construction.
    Type: Application
    Filed: February 27, 2002
    Publication date: August 28, 2003
    Inventors: C. Raymond Cheng, Z. Gerald Liu, Randolph G. Zoran
  • Exhaust aftertreatment filter with particulate distribution pattern
    Patent number: 6544310
    Abstract: An exhaust aftertreatment filter and method is provided for filtering engine exhaust. Varying cell size is provided to spread trapped contaminant particulate along a distribution pattern reducing heat concentration and the risk of melting during regeneration, to minimize hot-spot meltdown otherwise caused by high density concentration of trapped particulate during regeneration. Cell size is varied by varying volume and/or height and/or width and/or length. Tapering of cells is also provided to change the cross-sectional area from the upstream to the downstream end.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: April 8, 2003
    Assignee: Fleetguard, Inc.
    Inventors: Kurt M. A. Badeau, Z. Gerald Liu, Thomas M. Yonushonis, William C. Haberkamp, Randolph G. Zoran, Murray R. Schukar
  • Exhaust aftertreatment filter with particulate distribution pattern
    Publication number: 20020174770
    Abstract: An exhaust aftertreatment filter and method is provided for filtering engine exhaust. Varying cell size is provided to spread trapped contaminant particulate along a distribution pattern reducing heat concentration and the risk of melting during regeneration, to minimize hot-spot meltdown otherwise caused by high density concentration of trapped particulate during regeneration. Cell size is varied by varying volume and/or height and/or width and/or length. Tapering of cells is also provided to change the cross-sectional area from the upstream to the downstream end.
    Type: Application
    Filed: May 24, 2001
    Publication date: November 28, 2002
    Inventors: Kurt M.A. Badeau, Z. Gerald Liu, Thomas M. Yonushonis, William C. Haberkamp, Randolph G. Zoran, Murray R. Schukar