Patent US4874586A successfully refreshed from Google Patents.
US4874586A
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US
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Raghouse bag design for simultaneous particulate capture and chemical reaction
Assignee: Saint Gobain Abrasives Inc
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Filing: 1987-12-03
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Granted: 1989-10-17
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Expires: 2007-12-03
Abstract
Abstract Bag for receiving a gas stream containing solid particulate and undesirable gaseous components, consisting of inner and outer tubular porous walls arranged coextensively to define a space between them, which space is divided at discrete intervals into compartments containing solid particles of chemical to treat the gaseous components.
Inventors
- 👤 Thomas Szymanski
- 👤 Stephen M. Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:17
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/022; F23J15/025; B; B01; B01D; B01D46/00; B01D46/02; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8621; B01D53/8625; B01D53/8631; F23J2215/00; F23J2215/10; F23J2217/00; F23J2217/10; F23J2217/101; F23J2219/00; F23J2219/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
Bag for use in removing particulate from a gas stream and simultaneously treating undesirable gaseous components of the gas stream, comprising: (a) a first tubular porous wall, (b) a second tubular porous wall mounted in telescoping, coextensive relationship inwardly of the first tubular wall to define a space between the two walls, (c) means located at substantial longitudinal intervals between the tubular walls to divide the space into a plurality of discrete compartments, (d) solid particles of chemical contained in each of the compartments, the chemical particles acting to treat an undesirable gaseous component, wherein passage of a gas stream laterally through the tubular walls and space therebetween initially encounters the first wall and deposits particulate thereon, the gas stream subsequently passing through the particles of chemical and the second wall.
Claim 2
Dependent Claim
131 words
Bag for use in removing particulate from a gas stream and simultaneously treating undesirable gaseous components of the gas stream, comprising: (a) a first tubular porous wall, (b) a second tubular porous wall mounted in telescoping, coextensive relationship inwardly of the first tubular wall to define a space between the two walls, (c) means located at substantial longitudinal intervals between the tubular walls to divide the space into a plurality of discrete compartments, (d) solid particles of chemical contained in each of the compartments, the chemical particles acting to treat an undesirable gaseous component, wherein passage of a gas stream laterally through the tubular walls and space therebetween initially encounters the first wall and deposits particulate thereon, the gas stream subsequently passing through the particles of chemical and the second wall.
Claim 3
Dependent Claim
34 words
Bag as recited in claim 1, wherein the first wall is provided with fine pores of a dimension that will not pass the solid particles of chemical particulate, but will pass the gas stream.
Claim 4
Dependent Claim
45 words
Bag as recited in claim 1, wherein one of the walls is formed of a relatively stiff fabric which lends physical strength to the bag, while the other wall is made of a material which is relatively flexible to facilitate the formation of the compartments.
References Cited (Backward Citations)
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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) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |