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US 12,605,664 B2Granted
Foldable filter bags, filter bag support assemblies, and filter bag assemblies
AssigneeDonaldson Company, Inc.
InventorsEric W. E. Collin, David V. Gutman, Steven A. Johnson, Benny J. B. Mombaerts, Gabriel J. Safarian, David L. Van Eylen, Iman Vezvaei
Life of this patent
Estimating the term…
Abstract
Foldable filter bags, filter bag support assemblies, and filter bag assemblies are described herein. The foldable filter bags, filter bag support assemblies, and filter bag assemblies may be used in air filter systems to remove particulate matter from air or other gases. Methods of using the air filter systems and methods of assembling the filter bag assemblies are also described.
Claims18
A filter bag comprising:
- a body comprising a bag opening and a closed end, the body extending from the bag opening to the closed end along a bag axis extending between the bag opening to the closed end, wherein the body comprises filter media forming a tubular shape between the bag opening and the closed end in an unfolded configuration;
- a sealing cuff attached to the filter media forming the tubular shape of the body, the sealing cuff attached to an interior surface of the filter media proximate the bag opening in an unfolded configuration, the sealing cuff extending around an entire perimeter of the bag opening, wherein the interior surface of the filter media faces towards an interior volume of the filter bag in an unfolded configuration;
- and
- a fitting cuff positioned on the filter media forming the tubular shape, the fitting cuff located between the sealing cuff and the closed end in an unfolded configuration, the fitting cuff positioned on an exterior surface of the filter media, wherein the exterior surface of the filter media faces away from the interior volume of the filter bag in an unfolded configuration;
- wherein a portion of the filter media forming the body between the sealing cuff and the fitting cuff is folded to define a fitting pocket in the filter media between the sealing cuff and the fitting cuff, wherein an interior surface of the fitting pocket is defined by the exterior surface of the filter media, and wherein the fitting cuff is located in the fitting pocket and the sealing cuff is located outside of the fitting pocket, and wherein, when moving along the bag axis away from the closed end, the bag opening is positioned between the fitting cuff and the closed end of the body after the fitting pocket is formed;
- wherein, when moving along the bag axis away from the closed end body in an unfolded configuration, the sealing cuff comprises a proximal end and a distal end, wherein the proximal end of the sealing cuff is located between the closed end of the body and the distal end of the sealing cuff;
- wherein, when moving along the bag axis away from the closed end of the body in an unfolded configuration fitting cuff comprises a proximal end and a distal end, wherein the proximal end of the fitting cuff is located between the closed end of the body and the distal end of the fitting cuff, and wherein the fitting cuff comprises a fitting cuff length measured along the bag axis;
- wherein, before the fitting pocket is formed, the proximal end of the sealing cuff is separated from the distal end of the fitting cuff by a pocket length that is greater than two times the fitting cuff length.
5 more elements
Dependencies are inferred from the claim text.