Reinforced filter tube and method of making the same
First Claim
Patent Images
1. A filter including, in combination:
- (a) a porous filter tube formed of randomly oriented glass fibers,(b) at least one layer of a suitable thin sheet material wrapped around said porous filter tube and being in intimate contact therewith, and(c) a seamless outer tubular support structure of sufficient rigidity to radially inwardly compress said porous filter tube and said suitable thin sheet material and having an inside diameter slightly smaller than the outside diameter of the combination of the porous filter tube and said outer layer of sheet material and completely surrounding said combination, said support structure having a low coefficient of friction in relation to said suitable thin sheet material thereby holding said combination in compression, and causing said outer layer of sheet material to be in intimate contact at virtually all points of said porous filter.
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Abstract
There is disclosed a porous, vacuum formed filter tube having randomly oriented glass fibers and having at least one layer of a suitable sheet material wrapped around said porous filter tube and being in intimate contact therewith, said disclosed combination having an outer support structure of a predetermined inside diameter sufficient to compress the assembly of said porous filter tube and said material when it is slipped thereover, thus providing compression from the outside to the inside and forcing the layer of sheet material into intimate contact at virtually all points with said porous filter tube.
46 Citations
20 Claims
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1. A filter including, in combination:
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(a) a porous filter tube formed of randomly oriented glass fibers, (b) at least one layer of a suitable thin sheet material wrapped around said porous filter tube and being in intimate contact therewith, and (c) a seamless outer tubular support structure of sufficient rigidity to radially inwardly compress said porous filter tube and said suitable thin sheet material and having an inside diameter slightly smaller than the outside diameter of the combination of the porous filter tube and said outer layer of sheet material and completely surrounding said combination, said support structure having a low coefficient of friction in relation to said suitable thin sheet material thereby holding said combination in compression, and causing said outer layer of sheet material to be in intimate contact at virtually all points of said porous filter. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 20)
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2. A filter, including in combination;
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(a) a seamless inner tubular support structure, (b) an inner layer suitable sheet material wrapped around said tubular support structure, (c) a porous filter tube formed of randomly oriented glass fibers, (d) at least one outer layer of a suitable thin sheet material wrapped around said porous filter tube, and being in intimate contact therewith; and (e) a seamless outer tubular support structure of sufficient rigidity to radially inwardly compress said porous filter tube and said suitable thin sheet material and having an inside diameter slightly smaller than the outside diameter of the combination of said inner tubular support structure, said inner layer of suitable sheet material, said porous filter tube, and said outer layer of suitable sheet material and completely surrounding said combination, said support structure having a low coefficient of friction in relation to said suitable thin sheet material, thereby holding said combination in compression, and causing said outer layer of sheet material to be in intimate contact at virtually all points with said porous filter tube. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification