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OwnerJames A. McGrath, James Allen Morton +3inventors
InventorsJames A. McGrath, James Allen Morton, Stephen Neubert, Joseph C. Anderer, Stephen Sierens
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A filter support sleeve for use with a filter element to provide structural support for the filter element. The support sleeve encompasses the filter element and includes a metal strip wound in helical turns joined by a continuous spiral weld to form a hollow cylinder. The metal strip has substantially square perforation for passage of fluid flow through the support sleeve oriented such that when the metal strip is helically wound, a line parallel to each side of the square-shaped perforation is skew with the axial axis of the support sleeve. The support sleeve present an open structure while protecting the filter element from forces generated by the fluid flow during normal use or back flow during cleaning. When used with a pleated filter element, the support sleeve will not obstruct the entire length of the pleats.
A filter support sleeve for use with a filter element, the support sleeve comprising at least one substantially circular end ring and a metal strip wound in a helical configuration, wherein the metal strip has at least two edges joined by a spiral weld to form a hollow cylinder, wherein the metal strip has a plurality of substantially square-shaped perforations for passage of fluid flow through the support sleeve.
A filter support sleeve for a filter element, comprising at least one end ring and a metal strip, wherein the metal strip is wound in a helical configuration joined by a spiral weld to form a hollow cylinder, and wherein the metal strip has a plurality of multi-sided perforations for passage of fluid flow through the support sleeve oriented such that when the metal strip is helically wound, a line parallel to each of the sides of the multi-sided perforations intersects a plane encompassing the circular end ring.
A filter support sleeve for a filter element, comprising a helical wound sheet wherein edge portions of the sheet are welded to adjacent edge portions of the sheet with a spiral weld having a pitch angle between 30 and 60 degrees to form a hollow cylinder, wherein the sheet has a plurality of square perforation for passage of fluid flow through the support sleeve.
A filter apparatus for filtering a fluid comprising:
A filter apparatus for filtering a pressurized fluid comprising:
A filter support sleeve for a filter element, the sleeve comprising a metal body having parallel edges, wherein the metal body is wound in a helical conformation, and wherein the edges are bonded in a helical weld to form a cylindrical structure, and wherein the body has a plurality of openings, wherein the openings comprise at least three substantially straight sides.
Dependencies are inferred from the claim text.