Patents by Inventor Robert Allen Dushek

Robert Allen Dushek 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).

  • Air cleaner; aerosol separator; and method
    Patent number: 6187073
    Abstract: A filter arrangement includes a tubular first filter element having a first media pack defining a first open filter interior and an air flow outlet. The air flow outlet is in gas flow communication with the first open filter interior. A housing construction has a gas flow inlet and a gas flow outlet. The air flow outlet of the first filter element is in gas flow communication with the gas flow outlet. A coalescer filter element is oriented in the housing construction in fluid communication with the gas flow inlet. A tubular second filter element is oriented in the housing construction and has a second media pack defining a second open filter interior. The second open filter interior is in gas flow communication with the gas flow outlet.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: February 13, 2001
    Assignee: Donaldson Company, Inc.
    Inventors: Steven Scott Gieseke, Robert Allen Dushek
  • Aerosol separator; and method
    Patent number: 6171355
    Abstract: An arrangement for separating a hydrophobic liquid phase from a gaseous stream includes a coalescer filter, a housing, a gas flow direction arrangement, and a liquid collection arrangement. The coalescer filter includes a non-woven media of fibers. The housing includes an interior having a gas flow inlet and a gas flow outlet. The liquid collection arrangement is positioned within the housing construction and is oriented for receiving liquid collected from the coalescer filter and drained therefrom. Methods for conducting the separations are also provided.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: January 9, 2001
    Assignee: Donaldson Company, Inc.
    Inventors: Steven Scott Gieseke, Robert Allen Dushek
  • Aerosol separator; and method
    Patent number: 6143049
    Abstract: An arrangement for separating a hydrophobic liquid phase from a gaseous stream includes a coalescer filter, a housing, a gas flow direction arrangement, and a liquid collection arrangement. The coalescer filter includes a non-woven media of fibers. The housing includes an interior having a gas flow inlet and a gas flow outlet. The liquid collection arrangement is positioned within the housing construction and is oriented for receiving liquid collected from the coalescer filter and drained therefrom. Methods for conducting the separations are also provided.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: November 7, 2000
    Assignee: Donaldson Company, Inc.
    Inventors: Steven Scott Gieseke, Robert Allen Dushek
  • Aerosol separator and method
    Patent number: 5853439
    Abstract: An arrangement for separating a hydrophobic liquid phase from a gaseous stream includes a coalescer filter, a housing, a gas flow direction arrangement, and a liquid collection arrangement. The coalescer filter includes a non-woven media of fibers. The housing includes an interior having a gas flow inlet and a gas flow outlet. The liquid collection arrangement is positioned within the housing construction and is oriented for receiving liquid collected from the coalescer filter and drained therefrom. Methods for conducting the separations are also provided.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: December 29, 1998
    Assignee: Donaldson Company, Inc.
    Inventors: Steven Scott Gieseke, Robert Allen Dushek
  • Coalescer filter
    Patent number: D410010
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: May 18, 1999
    Assignee: Donaldson Company, Inc.
    Inventors: Steven Scott Gieseke, Robert Allen Dushek, Jeffrey J. Ivarson
  • Coalescer filter with rear plate
    Patent number: D420117
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: February 1, 2000
    Assignee: Donaldson Company, Inc.
    Inventors: Steven Scott Gieseke, Robert Allen Dushek, Jeffrey J. Ivarson