Patents by Inventor Jeff S. Rahlf

Jeff S. Rahlf 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).

  • Z-filter media pack arrangement; and, methods
    Publication number: 20120304609
    Abstract: Z-filter media pack arrangements and methods for providing them are described. The preferred arrangements have a cured-in-place jacket around an outside of a coiled z-filter media combination. The preferred cured-in-place jacket is a mold-in-place overmold which includes, integral therein, a housing seal arrangement. Preferably a cured-in-place center core is used, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.
    Type: Application
    Filed: August 13, 2012
    Publication date: December 6, 2012
    Applicant: Donaldson Company., Inc.
    Inventors: KEVIN J. SCHRAGE, Eugene Lensing, Jeff S. Rahlf, Wayne R.W. Bishop, Gregory L. Reichter, Benny K. Nelson, Rodger I. Spears, Bruce R. Crenshaw, Vladimir Kladnitsky
  • Process and materials for coiling z-filter media; and/or closing flutes of filter media; and, products
    Publication number: 20120285610
    Abstract: Approaches to providing z-filter media constructions are provided. Preferred corrugated media, filter constructions having such corrugated media, and filter systems using such filter constructions are provided. Also, preferred methods of forming filter constructions are provided.
    Type: Application
    Filed: July 23, 2012
    Publication date: November 15, 2012
    Applicant: Donaldson Company, Inc.
    Inventors: KEVIN J. SCHRAGE, Eugene Lensing, Donald Raymond Mork, Troy Murphy, Jeff S. Rahlf, Gregory L. Reichter, Daniel T. Risch
  • Z-filter media pack arrangement; and, methods
    Patent number: 8241383
    Abstract: Z-filter media pack arrangements and methods for providing them are described. The preferred arrangements have a cured-in-place jacket around an outside of a coiled z-filter media combination. The preferred cured-in-place jacket is a mold-in-place overmold which includes, integral therein, a housing seal arrangement. Preferably a cured-in-place center core is used, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: August 14, 2012
    Assignee: Donaldson Company, Inc.
    Inventors: Kevin J. Schrage, Eugene Lensing, Jeff S. Rahlf, Wayne R. W. Bishop, Gregory L. Reichter, Benny K. Nelson, Rodger I. Spears, Bruce R. Crenshaw, Vladimir Kladnitsky
  • Process and materials for coiling z-filter media, and/or closing flutes of filter media; and, products
    Patent number: 8226786
    Abstract: Approaches to providing z-filter media constructions are provided. Preferred corrugated media, filter constructions having such corrugated media, and filter systems using such filter constructions are provided. Also, preferred methods of forming filter constructions are provided.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: July 24, 2012
    Assignee: Donaldson Company, Inc.
    Inventors: Kevin J. Schrage, Eugene Lensing, Donald Raymond Mork, Troy Murphy, Jeff S. Rahlf, Gregory L. Reichter, Daniel T. Risch
  • Z-FILTER MEDIA PACK ARRANGEMENT; AND, METHODS
    Publication number: 20110232244
    Abstract: Z-filter media pack arrangements and methods for providing them are described. The preferred arrangements have a cured-in-place jacket around an outside of a coiled z-filter media combination. The preferred cured-in-place jacket is a mold-in-place overmold which includes, integral therein, a housing seal arrangement. Preferably a cured-in-place center core is used, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.
    Type: Application
    Filed: April 4, 2011
    Publication date: September 29, 2011
    Applicant: Donaldson Company, Inc.
    Inventors: KEVIN J. SCHRAGE, Eugene Lensing, Jeff S. Rahlf, Wayne R.W. Bishop, Gregory L. Reichter, Benny K. Nelson, Rodger I. Spears, Bruce R. Crenshaw, Vladimir Kladnitsky
  • Z-filter media pack arrangement; and, methods
    Patent number: 7967886
    Abstract: Z-filter media pack arrangements and methods for providing them are described. Certain aspects concern a cured-in-place seal on an outside of a coiled z-filter media combination. Other aspects concern a cured-in-place center core, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: June 28, 2011
    Assignee: Donaldson Company, Inc.
    Inventors: Kevin J. Schrage, Eugene Lensing, Jeff S. Rahlf, Wayne R. W. Bishop, Gregory L. Reichter, Benny K. Nelson, Rodger I. Spears, Bruce R. Crenshaw, Vladimir Kladnitsky
  • Z-Filter Media Pack Arrangement; and, Methods
    Publication number: 20080250766
    Abstract: Z-filter media pack arrangements and methods for providing them are described. Certain aspects concern a cured-in-place seal on an outside of a coiled z-filter media combination. Other aspects concern a cured-in-place center core, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.
    Type: Application
    Filed: June 6, 2005
    Publication date: October 16, 2008
    Applicant: Donaldson Company, Inc.
    Inventors: Kevin J. Schrage, Eugene Lensing, Jeff S. Rahlf, Wayne R.W. Bishop, Gregory L. Reichter, Benny K. Nelson, Rodger I. Spears, Bruce R. Crenshaw, Vladimir Kladnitsky