Patent JPS5740248A successfully refreshed from Google Patents.
Patent US4610789A successfully refreshed from Google Patents.
US4610789A
Expired / Lapsed
US
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Filtration cartridge and reactor
Assignee: PPG Industries Inc
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Filing: 1985-04-22
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Granted: 1986-09-09
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Expires: 2005-04-22
Abstract
Abstract A filter cartridge is structured of a filtration mat assembly wrapped or rolled about a central distribution tube. The filtration mat includes a plurality of hollow porous fiber strands carried by a fluid permeable sheet. Once the mat has been wrapped about the porous central distribution tube, both ends of the mat and distribution tube are firmly embedded in end caps. The central distribution tube is comprised of two tube segments which are telescopingly connected. Shrinkage and contraction or swelling and elongation of the mat's fibers cause the end caps to move toward or away from each other. This movement of the end caps is able to occur due to the ability of the telescoping central distribution tube to decrease or increase in length.
Inventors
- 👤 Herbert W. Barch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:44
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/02; B01D63/031; C; C12; C12M; C12M29/00; C12M29/16; B01D2313/00; B01D2313/23; B01D2313/44
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
118 words
A hollow fiber filter cartridge usable in a reactor, said filter cartridge comprising: a filtration mat assembly including a plurality of generally parallel elongated hollow strands and at least a first fluid permeable sheet; a porous central distribution tube about which said filtration mat assembly is wrapped; spaced upper and lower end caps, upper and lower end portions of said central distribution tube and said filtration mat assembly being firmly embedded in said upper and lower end caps respectively; and means for adjusting the length of said tube responsive to movement of said end caps toward or away from each other and in amounts sufficient to preclude breaking said strands upon stretching or crushing said strands upon compression.
Claim 2
Dependent Claim
118 words
A hollow fiber filter cartridge usable in a reactor, said filter cartridge comprising: a filtration mat assembly including a plurality of generally parallel elongated hollow strands and at least a first fluid permeable sheet; a porous central distribution tube about which said filtration mat assembly is wrapped; spaced upper and lower end caps, upper and lower end portions of said central distribution tube and said filtration mat assembly being firmly embedded in said upper and lower end caps respectively; and means for adjusting the length of said tube responsive to movement of said end caps toward or away from each other and in amounts sufficient to preclude breaking said strands upon stretching or crushing said strands upon compression.
Claim 3
Dependent Claim
24 words
The cartridge of claim 1 wherein said central distribution tube is comprised of an upper distribution tube segment and a lower distribution tube segment.
Claim 4
Dependent Claim
29 words
The cartridge of claim 2 wherein said means for varying the length of said central distribution tube is a telescoping engagement of said upper and lower distribution tube segments.
Claim 5
Dependent Claim
33 words
The cartridge of claim 3 wherein a first of said tube segments includes a reduced diameter end portion which is receivable within a second of said tube segments to effect said telescoping engagement.
Claim 6
Dependent Claim
33 words
The cartridge of claim 4 wherein said first tube segment includes a shoulder at the termination of said reduced diameter end portion, said shoulder limiting the telescoping contraction of said central distribution tube.
Claim 7
Dependent Claim
49 words
The cartridge of claim 2 wherein a first of said tube segments is firmly embedded in, and passes through, a first one of said end caps, and further wherein a second of said tube segments is firmly embedded in, and terminates in, a second one of said end caps.
Claim 8
Dependent Claim
11 words
The cartridge of claim 1 wherein said strands are glass strands.
Claim 9
Dependent Claim
117 words
A hollow fiber filter cartridge usable in a reactor, said filter cartridge comprising: a filtration mat assembly including a plurality of generally parallel elongated hollow strands and at least a first fluid permeable sheet; a porous central distribution tube about which said filtration mat assembly is wrapped; spaced upper and lower end caps, upper and lower end portions of said central distribution tube and said filtration mat assembly being firmly embedded in said upper and lower end caps respectively; and means for adjusting the length of said tube responsive to movement of said end caps toward or away from each other and in amounts sufficient to preclude breaking said strands upon stretching or crushing strands upon compression.
Claim 10
Dependent Claim
117 words
A hollow fiber filter cartridge usable in a reactor, said filter cartridge comprising: a filtration mat assembly including a plurality of generally parallel elongated hollow strands and at least a first fluid permeable sheet; a porous central distribution tube about which said filtration mat assembly is wrapped; spaced upper and lower end caps, upper and lower end portions of said central distribution tube and said filtration mat assembly being firmly embedded in said upper and lower end caps respectively; and means for adjusting the length of said tube responsive to movement of said end caps toward or away from each other and in amounts sufficient to preclude breaking said strands upon stretching or crushing strands upon compression.
Claim 11
Dependent Claim
24 words
The cartridge of claim 8 wherein said central distribution tube is comprised of an upper distribution tube segment and a lower distribution tube segment.
Claim 12
Dependent Claim
29 words
The cartridge of claim 9 wherein said means for varying the length of said central distribution tube is a telescoping engagement of said upper and lower distribution tube segments.
Claim 13
Dependent Claim
33 words
The cartridge of claim 10 wherein a first of said tube segments includes a reduced diameter end portion which is receivable within a second of said tube segments to effect said telescoping engagement.
Claim 14
Dependent Claim
33 words
The cartridge of claim 11 wherein said first tube segment includes a shoulder at the termination of said reduced diameter end portion, said shoulder limiting the telescoping contraction of said central distribution tube.
Claim 15
Dependent Claim
49 words
The cartridge of claim 9 wherein a first of said tube segments is firmly embedded in, and passes through, a first one of said end caps, and further wherein a second of said tube segments is firmly embedded in, and terminates in, a second one of said end caps.
Claim 16
Dependent Claim
12 words
The cartridge of claim 8 wherein said porous strands are also hollow.
Claim 17
Dependent Claim
11 words
The cartridge of claim 14 wherein said strands are glass strands.
Claim 18
Dependent Claim
11 words
The cartridge of claim 8 wherein said strands are glass strands.
References Cited (Backward Citations)
US4210536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-08 | 1990-03-10 | 1990-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-08 | 1994-03-10 | 1994-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-08 | 1998-03-10 | 1998-09-09 | $7700.00 | Window Closed / Lapsed |