Patent US5290441A successfully refreshed from Google Patents.
US5290441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated collar, filter bag, cage and locking ring assembly for baghouses
Assignee: Menardi Mikropul LLC
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Filing: 1993-01-15
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Granted: 1994-03-01
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Expires: 2013-01-15
Abstract
Abstract Disclosed is a filter assembly for use in a baghouse having a cell plate provided with openings. The filter assembly includes a collar, filter bag, tubular supporting cage and locking ring. The filter bag filters particulate material and extends below the cell plate. The collar supports the filer bag and has a longitudinally extended portion and a flange portion. The longitudinally extended portion is affixed to the filter bag below the cell plate, while the flange portion extends along the cell plate as a rim above a respective opening. The collar acts as a gasket to seal a respective opening in the cell plate. The tubular supporting cage has a longitudinally extended portion that supports the filter bag. The locking ring locks the filter bag, collar and cage in place. The locking ring can include a venturi affixed thereto to assist in filtering and cleaning operations.
Inventors
- 👤 James W. Griffin
- 👤 Billy A. Bunn
- 👤 Darrell Dunning
- 👤 Larry E. Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:52
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/06
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
148 words
A filter assembly for use in a baghouse having a cell plate provided with openings, said filter assembly comprising: a filter bag for filtering particulate material carried in gas or liquid passing through the baghouse, said filter bag extending below the cell plate; a collar for supporting said filter bag, said collar having a longitudinally extended portion and a flange portion, the longitudinally extended portion being affixed to said filter bag below the cell plate and the flange portion extending along the cell plate as a rim around a respective opening; a tubular supporting cage having a longitudinally extended portion for structurally supporting said filter bag; and a locking ring including an annular rim for locking an arrangement of said filter bag, collar and cage in place in a respective opening in the cell plate and an annular channel collar for protecting said arrangement above the cell plate.
Claim 2
Dependent Claim
148 words
A filter assembly for use in a baghouse having a cell plate provided with openings, said filter assembly comprising: a filter bag for filtering particulate material carried in gas or liquid passing through the baghouse, said filter bag extending below the cell plate; a collar for supporting said filter bag, said collar having a longitudinally extended portion and a flange portion, the longitudinally extended portion being affixed to said filter bag below the cell plate and the flange portion extending along the cell plate as a rim around a respective opening; a tubular supporting cage having a longitudinally extended portion for structurally supporting said filter bag; and a locking ring including an annular rim for locking an arrangement of said filter bag, collar and cage in place in a respective opening in the cell plate and an annular channel collar for protecting said arrangement above the cell plate.
Claim 3
Dependent Claim
19 words
A filter assembly according to claim 1, wherein said collar and said filter bag are made of compatible materials.
Claim 4
Dependent Claim
23 words
A filter assembly according to claim 1, wherein said collar is made from needle felt including at least one of polyester and polypropylene.
Claim 5
Dependent Claim
19 words
A filter assembly according to claim 1, wherein said filter bag is affixed to said collar by heat fusing.
Claim 6
Dependent Claim
18 words
A filter assembly according to claim 1, wherein said filter bag is affixed to said collar by sewing.
Claim 7
Dependent Claim
18 words
A filter assembly according to claim 1, wherein said filter bag is affixed to said collar by adhesives.
Claim 8
Dependent Claim
41 words
A filter assembly according to claim 1, wherein said collar comprises a gasket to seal a respective opening in the cell plate by compression fit between the annular rim of said locking ring and a respective opening in the cell plate.
Claim 9
Dependent Claim
36 words
A filter assembly according to claim 1, wherein said collar is molded from needle felt and a chemical binder to provide the required properties of softness for gasketing and stiffness for support of said filter bag.
Claim 10
Dependent Claim
24 words
A filter assembly according to claim 8, wherein the chemical binder is selected from the group consisting of low density extruded polyethylene and polypropylene.
Claim 11
Dependent Claim
29 words
A filter assembly according to claim 1, further comprising a venturi affixed to said locking ring to assist in at least one of a filtering and a cleaning operation.
Claim 12
Dependent Claim
22 words
A filter assembly according to claim 1, wherein said cage has a collar portion partially overlapping the flange portion of said collar.
Claim 13
Dependent Claim
151 words
A filter assembly for use in a baghouse having a cell plate provided with openings, said filter assembly comprising: a filter bag for filtering particulate material carried in gas or liquid passing through the baghouse, said filter bag extending below the cell plate; a molded collar supporting said filter bag, said collar having a longitudinally extended portion and a flange portion, the longitudinally extended portion being affixed to said filter below the cell plate and the flange portion extending along the cell plate as a rim above a respective opening; a tubular supporting cage structurally supporting said filter bag; and a locking ring for locking an arrangement of said filter bag, collar and cage in place, said locking ring including an annular rim for locking said arrangement around the perimeter of a respective opening in the cell plate and an annular channel collar for protecting said arrangement above the cell plate.
Claim 14
Dependent Claim
151 words
A filter assembly for use in a baghouse having a cell plate provided with openings, said filter assembly comprising: a filter bag for filtering particulate material carried in gas or liquid passing through the baghouse, said filter bag extending below the cell plate; a molded collar supporting said filter bag, said collar having a longitudinally extended portion and a flange portion, the longitudinally extended portion being affixed to said filter below the cell plate and the flange portion extending along the cell plate as a rim above a respective opening; a tubular supporting cage structurally supporting said filter bag; and a locking ring for locking an arrangement of said filter bag, collar and cage in place, said locking ring including an annular rim for locking said arrangement around the perimeter of a respective opening in the cell plate and an annular channel collar for protecting said arrangement above the cell plate.
Claim 15
Dependent Claim
19 words
A filter assembly according to claim 12, wherein said collar and said filter bag are made of compatible materials.
Claim 16
Dependent Claim
25 words
A filter assembly according to claim 12, wherein said collar is made of needle felt and further includes at least one of polyester and polypropylene.
Claim 17
Dependent Claim
19 words
A filter assembly according to claim 12, wherein said filter bag is affixed to said collar by heat fusing.
Claim 18
Dependent Claim
18 words
A filter assembly according to claim 12, wherein said filter bag is affixed to said collar by sewing.
Claim 19
Dependent Claim
19 words
A filter bag assembly according to claim 12, wherein said filter bag is affixed to said collar by adhesives.
Claim 20
Dependent Claim
41 words
A filter assembly according to claim 12, wherein said collar comprises a gasket to seal a respective opening in the cell plate by compression fit between the annular rim of said locking ring and a respective opening in the cell plate.
Claim 21
Dependent Claim
36 words
A filter assembly according to claim 12, wherein said collar is molded from needle felt and a chemical binder to provide the required properties of softness for gasketing and stiffness for support of said filter bag.
Claim 22
Dependent Claim
24 words
A filter assembly according to claim 19, wherein the chemical binder is selected from the group consisting of low density extruded polyethylene and polypropylene.
Claim 23
Dependent Claim
29 words
A filter assembly according to claim 12, further comprising a venturi affixed to said locking ring to assist in at least one of a filtering and a cleaning operation.
Claim 24
Dependent Claim
22 words
A filter assembly according to claim 12, wherein said cage has a collar portion partially overlapping the flange portion of said collar.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-28 | 1997-08-30 | 1998-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-28 | 2001-08-30 | 2002-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-28 | 2005-08-30 | 2006-03-01 | $7700.00 | Window Closed / Lapsed |