Combination filter assembly
AssigneeBTG International Limited
InventorsBrendan Hogan, Jan Willem Marinus Myers
Life of this patent
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Abstract
A combination filter assembly having a plurality of filter sieves positioned in parallel one after the other in the direction of flow. The filter sieves are stretched and mounted in housing elements to form filter elements. The housing elements are in contact with each other by means of top and bottom bearing faces, and are maintained in a stack. The filter elements have a cylindrical shape with annular bearing faces, wherein one bearing face includes a centering male coupling and sealing formation, and the other bearing face includes a corresponding centering female coupling and sealing formation.
Claims34
A combination filter assembly having a number of filter sieves, said filter sieves being positioned in parallel one after the other in the direction of flow, wherein the filter sieves are stretched and mounted in housing elements to form filter elements, wherein the housing elements, by means of top and bottom bearing faces, are in contact with each other and are maintained in a stacked arrangement, wherein the filter elements each comprise a cylindrical shape with annular bearing faces, wherein each filter element on either its top or bottom bearing face comprises a centering male coupling and sealing formation, and on the other of its top or bottom bearing face comprises a corresponding centering female coupling and sealing formation, and wherein the male coupling and sealing formation comprises an annular protrusion and the female coupling and sealing formation comprises a corresponding annular groove.
A combination filter assembly having a number of filter sieves, said filter sieves being positioned in parallel one after the other in the direction of flow, wherein the filter sieves are stretched and mounted in housing elements to form filter elements, wherein the housing elements, by means of top and bottom bearing faces, are in contact with each other and are maintained in a stacked arrangement, wherein the filter elements each comprise a cylindrical shape with annular bearing faces, wherein each filter element on either its top or bottom bearing face comprises a centering male coupling and sealing formation, and on the other of its top or bottom bearing face comprises a corresponding centering female coupling and sealing formation, wherein the male coupling and sealing formation comprises an annular protrusion and the female coupling and sealing formation comprises a corresponding annular groove, wherein the filter elements are positioned as a coaxial stack within a housing, that the filter elements are mounted in the housing with an axial load and, that the housing comprises an entry section and an exit section, said entry section and said exit section being mountable to each other in an axial relationship, and wherein the entry section includes a female coupling and sealing formation and the exit section is includes a male coupling and sealing formation
A method for producing a combination filter assembly comprising a number of filter sieves that are stretched and mounted in housing elements to thereby form filter elements, said filter sieves being positioned in parallel one after the other in the direction of flow, said housing elements being positioned by means of top and bottom bearing faces in contact with each other so as to form a stack within a housing, wherein each filter element is provided with a centering male coupling and sealing formation on one of its bearing faces, and is provided with a centering female coupling and sealing formation on its opposite bearing face, said method comprising the steps of:
- a) stacking the filter elements with interengaging male and female sealing formations to form a column;
- b) positioning the column of filter elements between an entry section and an exit section;
- c) axially compressing the column of filter elements;
- and
- d) connecting the entry section with the exit section.
Dependencies are inferred from the claim text.