Patents by Inventor David Meline Webb

David Meline Webb 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).

  • Multi-element filter arrangement and methods
    Patent number: 7837754
    Abstract: A filter element includes a first, outer tubular construction of filter media defining a first open filter interior; a second, inner tuber construction of filter media defining a second open filter interior; the second construction of filter media being located within the first open filter interior and being radially spaced from the first construction of filter media; and the second open filter interior defines an unfiltered fluid channel. A plastic inner liner is within the first open filter interior to support the first construction of filter media. A plastic outer liner is within the first open filter interior to support the second construction of filter media. A filtered fluid channel is defined between the inner liner and the outer liner. A brace arrangement is between the first and second tubular constructions. The brace arrangement can include a spring, a plurality of gussets, or a solid spacer.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: November 23, 2010
    Assignee: Donaldson Company, Inc.
    Inventors: Philip Edward Johnson, David Meline Webb, Paul Stewart Booth, David E. Carlson
  • MULTI-ELEMENT FILTER ARRANGEMENT AND METHODS
    Publication number: 20100006514
    Abstract: A filter element includes a first, outer tubular construction of filter media defining a first open filter interior; a second, inner tuber construction of filter media defining a second open filter interior; the second construction of filter media being located within the first open filter interior and being radially spaced from the first construction of filter media; and the second open filter interior defines an unfiltered fluid channel. A plastic inner liner is within the first open filter interior to support the first construction of filter media. A plastic outer liner is within the first open filter interior to support the second construction of filter media. A filtered fluid channel is defined between the inner liner and the outer liner. A brace arrangement is between the first and second tubular constructions. The brace arrangement can include a spring, a plurality of gussets, or a solid spacer.
    Type: Application
    Filed: August 25, 2009
    Publication date: January 14, 2010
    Applicant: Donaldson Company, Inc.
    Inventors: Philip Edward Johnson, David Meline Webb, Paul Stewart Booth, David E. Carlson
  • Multi-element filter arrangement and methods
    Patent number: 7597734
    Abstract: A filter element includes a first, outer tubular construction of filter media defining a first open filter interior; a second, inner tuber construction of filter media defining a second open filter interior; the second construction of filter media being located within the first open filter interior and being radially spaced from the first construction of filter media; and the second open filter interior defines an unfiltered fluid channel. A plastic inner liner is within the first open filter interior to support the first construction of filter media. A plastic outer liner is within the first open filter interior to support the second construction of filter media. A filtered fluid channel is defined between the inner liner and the outer liner. A brace arrangement is between the first and second tubular constructions. The brace arrangement can include a spring, a plurality of gussets, or a solid spacer.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: October 6, 2009
    Assignee: Donaldson Company, Inc.
    Inventors: Philip Edward Johnson, David Meline Webb, Paul Stewart Booth, David E. Carlson