US5037461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration apparatus
Assignee: Industrial Filter and Pump Manufacturing Co
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Filing: 1989-09-25
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Granted: 1991-08-06
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Expires: 2009-09-25
Abstract
Abstract A filter suitable for the filtration of high temperature gasses includes a high pressure tank enclosing a chamber divided into a plurality of separate chambers by horizontally disposed rigid tube sheets. A plurality of banks of filter tubes are positioned in mutual alignment between adjacent ones of the tube sheets. Guide channels are provided on the tops and bottoms of the tube sheets for sealably mounting the filter tubes in place between the tube sheets. Fluid outlets open to the ambient through the wall of the tank between each adjacent pair of tube sheets and covers are removably secured over openings in the wall of the tank for access to the filter tubes.
Inventors
- 👤 James F. Zievers
- 👤 Paul Eggerstedt
- 👤 Elmer Kulousek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:46
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/2403; B01D46/2407; B01D46/0002; B01D46/0005; B01D46/0009; B01D2271/00; B01D2271/02; B01D2273/00; B01D2273/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
163 words
Filtration apparatus, comprising in combination a filter tank enclosing a chamber, a plurality of horizontally orientated rigid plates extending in vertically spaced parallel relationship across said tank, means for providing effective sealing for hot gases including first sealing means sealing the peripheries of said plates to said tank to seal the portions of said chamber above and below said plates from one another, said plates each having a plurality of openings therethrough, said openings in said plates being in mutual vertical alignment, a plurality of straight, porous filter tubes each having external flanges at opposite ends thereof and being open at opposite ends thereof, second sealing means sealably mounting said filter tubes between said plates in alignment with respective ones of said openings in said plates, a fluid inlet opening into the top portion of said chamber above the uppermost one of said plates, and a fluid outlet extending from said tank and opening into said chamber at a location between said plates.
Claim 2
Dependent Claim
163 words
Filtration apparatus, comprising in combination a filter tank enclosing a chamber, a plurality of horizontally orientated rigid plates extending in vertically spaced parallel relationship across said tank, means for providing effective sealing for hot gases including first sealing means sealing the peripheries of said plates to said tank to seal the portions of said chamber above and below said plates from one another, said plates each having a plurality of openings therethrough, said openings in said plates being in mutual vertical alignment, a plurality of straight, porous filter tubes each having external flanges at opposite ends thereof and being open at opposite ends thereof, second sealing means sealably mounting said filter tubes between said plates in alignment with respective ones of said openings in said plates, a fluid inlet opening into the top portion of said chamber above the uppermost one of said plates, and a fluid outlet extending from said tank and opening into said chamber at a location between said plates.
Claim 3
Dependent Claim
15 words
Filtration apparatus according to claim 1 wherein said filter tubes are formed of a ceramic.
Claim 4
Dependent Claim
82 words
Filtration apparatus according to claim 1 wherein said openings in said plates are arranged in straight rows, and said sealing means comprises a plurality of elongated channels on said plates enclosing respective ones of said rows of openings, said channels being respectively defined by a pair of spaced members, said spaced members being provided with holes adjacent said openings, and a plurality of rods extending through and between said holes adjacent said filter tubes for locking said filter tubes to said plates.
Claim 5
Dependent Claim
40 words
Filtration apparatus according to claim 3, wherein said second sealing means comprises elongate gasket means disposed in said channels between said filter tubes and said plate and having apertures aligned with associated ones of said openings and said filter tubes.
Claim 6
Dependent Claim
20 words
Filtration apparatus according to claim 3 wherein said channels are provided on both the tops and bottoms of said plates.
Claim 7
Dependent Claim
22 words
Filtration apparatus according to claim 5 wherein said first sealing means comprises imperforate flexible means connected between said tank and said plates.
Claim 8
Dependent Claim
152 words
Filtration apparatus, comprising in combination a filter tank enclosing a chamber, at least three horizontally oriented rigid plates extending in vertically spaced parallel relationship across said tank dividing said tank into an upper section and at least two vertically spaced sections disposed below said upper section, means for providing effective sealing for hot gases including first sealing means sealing the peripheries of said plates to said tank to seal the sections of said chamber above and below said plates from one another, said plates each having a plurality of vertically aligned openings therethrough, a plurality of straight, porous filter tubes having open opposite ends sealably connected to adjacent ones of said plates over said openings, a fluid inlet opening into said top section of said chamber above the uppermost one of said plates, and a plurality of fluid outlets extending from said tank and respectively opening into said sections between said plates.
Claim 9
Dependent Claim
152 words
Filtration apparatus, comprising in combination a filter tank enclosing a chamber, at least three horizontally oriented rigid plates extending in vertically spaced parallel relationship across said tank dividing said tank into an upper section and at least two vertically spaced sections disposed below said upper section, means for providing effective sealing for hot gases including first sealing means sealing the peripheries of said plates to said tank to seal the sections of said chamber above and below said plates from one another, said plates each having a plurality of vertically aligned openings therethrough, a plurality of straight, porous filter tubes having open opposite ends sealably connected to adjacent ones of said plates over said openings, a fluid inlet opening into said top section of said chamber above the uppermost one of said plates, and a plurality of fluid outlets extending from said tank and respectively opening into said sections between said plates.
Claim 10
Dependent Claim
15 words
Filtration apparatus according to claim 7 wherein said filter tubes are formed of a ceramic.
References Cited (Backward Citations)
US4904287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |