Patent US5209844A successfully refreshed from Google Patents.
US5209844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot gas filter with jet pulse cleaning
Assignee: UNIVERSAL POROSICS Inc A CORP OF
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Filing: 1991-08-08
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Granted: 1993-05-11
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Expires: 2011-08-08
Abstract
Abstract A combined hold-down and manifold member is formed of ceramic and holds a plurality of candle filters in sealing engagement with a ceramic tube sheet from which the filters are supported. The hold-down and manifold member supports a plurality of gas nozzles over the open ends of the candle filters to direct pulses of cleaning gas into the filters.
Inventors
- 👤 James F. Zievers
- 👤 Elizabeth C. Zievers
- 👤 Peter Aguilar
- 👤 Paul Eggerstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:37
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/2403; B01D46/2407; B01D29/00; B01D29/11; B01D29/114; B01D29/50; B01D29/52; B01D29/62; B01D29/66; B01D29/68; B01D46/0002; B01D46/0005; B01D46/66; B01D46/70; B01D46/71; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0446; B01D2201/0469; B01D2273/00; B01D2273/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
214 words
A filter for removing particulates from a fluid in which said particulates are entrained, comprising in combination, a filter tank having a fluid inlet and a fluid outlet, a support member extending across said tank to separate said tank into first and second chambers, said fluid inlet opening into said first chamber and said fluid outlet opening into said second chamber, a plurality of through holes in said support member, a plurality of porous tubular filter elements each having an open end and a closed end, said filter elements being respectively and sealably mounted in said holes and extending into said first chamber with said closed ends being disposed in said first chamber, a hold down member mounted over said open ends of said filter elements, a plurality of nozzle means mounted to said hold-down member and respectively disposed over said open ends of said filter elements for directing cleaning fluid into said filter elements, at least one manifold passageway extending through said support member, a plurality of branch passageways extending through said support member between said manifold passageway and said nozzle members, said hold-down member having a plurality of through holes aligned with said through holes in said support member through which fluid may flow from said filter elements into said second chamber.
Claim 2
Dependent Claim
214 words
A filter for removing particulates from a fluid in which said particulates are entrained, comprising in combination, a filter tank having a fluid inlet and a fluid outlet, a support member extending across said tank to separate said tank into first and second chambers, said fluid inlet opening into said first chamber and said fluid outlet opening into said second chamber, a plurality of through holes in said support member, a plurality of porous tubular filter elements each having an open end and a closed end, said filter elements being respectively and sealably mounted in said holes and extending into said first chamber with said closed ends being disposed in said first chamber, a hold down member mounted over said open ends of said filter elements, a plurality of nozzle means mounted to said hold-down member and respectively disposed over said open ends of said filter elements for directing cleaning fluid into said filter elements, at least one manifold passageway extending through said support member, a plurality of branch passageways extending through said support member between said manifold passageway and said nozzle members, said hold-down member having a plurality of through holes aligned with said through holes in said support member through which fluid may flow from said filter elements into said second chamber.
Claim 3
Dependent Claim
67 words
The combination set forth in claim 1, wherein said nozzle members each comprises an elongate tubular member having an orifice in the side thereof, one end of said elongate tubular member being sealably closed, and the other end of said elongate tubular member being open and communicating with said manifold passageway, each of said elongate tubular members being mounted in a respective one of said branch passageways.
Claim 4
Dependent Claim
43 words
The combination set forth in claim 2, wherein said one end of said elongate tubular member extends into said hold-down member, and an intermediate portion of said elongate tubular member extends across the associated one of said through holes in said hold-down member.
Claim 5
Dependent Claim
37 words
The combination set forth in claim 3, wherein said intermediate portion of said elongate tubular member is necked down to reduce the resistance to the flow of fluid from the associated filter element to said second chamber.
Claim 6
Dependent Claim
36 words
The combination set forth in claim 4, wherein the necked down portion of said tube is generally elliptical in cross-section with the major diameter thereof lying parallel to the longitudinal axis of the associated filter element.
Claim 7
Dependent Claim
17 words
The combination set forth in claim 1, wherein said hold-down member is affixed to said support member.
Claim 8
Dependent Claim
17 words
The combination set forth in claim 6, wherein said support and said hold-down member are ceramic parts.
Claim 9
Dependent Claim
18 words
The combination set forth in claim 1, wherein said support member and said hold-down member are ceramic parts.
Claim 10
Dependent Claim
57 words
The combination set forth in claim 1, wherein said manifold passageway comprises, a groove in one face of said hold-down member, said hold-down member being mounted with said face adjacent said support member, and sealing means surrounding said groove and sealably engaging said support member and said hold-down member, thereby to seal said groove from the ambient.
Claim 11
Dependent Claim
139 words
In a pressure filter, the combination comprising a filter support member having a plurality of opening therethrough, a plurality of tubular filter elements respectively extending through said openings and supported by said member, said openings having a counterbore and each of said filter elements having at one end an external annular flange received in said counterbores, a hold-down means resting on said support member over said one end of each of said filter elements, conduit means extending through said hold-down means, a plurality of tubular nozzle means mounted to said hold-down means with passageways through said nozzle means communicating with said conduit means, said nozzle means opening at the ends thereof remote from said hold-down means toward the openings in said filter elements to direct pulses of gas supplied to said passageways to the interiors of said filter elements.
Claim 12
Dependent Claim
139 words
In a pressure filter, the combination comprising a filter support member having a plurality of opening therethrough, a plurality of tubular filter elements respectively extending through said openings and supported by said member, said openings having a counterbore and each of said filter elements having at one end an external annular flange received in said counterbores, a hold-down means resting on said support member over said one end of each of said filter elements, conduit means extending through said hold-down means, a plurality of tubular nozzle means mounted to said hold-down means with passageways through said nozzle means communicating with said conduit means, said nozzle means opening at the ends thereof remote from said hold-down means toward the openings in said filter elements to direct pulses of gas supplied to said passageways to the interiors of said filter elements.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-10 | 1996-11-09 | 1997-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-10 | 2000-11-09 | 2001-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-10 | 2004-11-09 | 2005-05-11 | $7700.00 | Window Closed / Lapsed |