US5199257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for removal of particulates from exhaust and flue gases
Assignee: Rina Consulting - Centro Sviluppo Materiali SpA
•
Filing: 1992-05-20
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Granted: 1993-04-06
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Expires: 2012-05-20
Abstract
Abstract Device for reduction of exhaust gas particulates in an exhaust pipe, comprising in combination a two-pole high-voltage generator, and a plurality of conductors alternately connected to one or the other of the poles. The conductors constitute substantially the only obstruction to flow of exhaust gas through the pipe and occupy a total area which is less than 50% and more than 10% of the pipe cross section. Air is introduced into the pipe upstream of the conductors, and a probe analyzes the downstream gas and regulates the air introduction according to the detected composition.
Inventors
- 👤 Angelo Colletta
- 👤 Giampaolo Giromella
- 👤 Medardo Pinti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:22
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/06; F23G7/061; F23G7/063; B; B01; B01D; B01D53/00; B01D53/32; B01J; B01J19/00; B01J19/08; B01J19/087; B01J19/088; F01; F01N; F01N3/00; F01N3/01; F01N3/02; F01N3/05; F01N3/08; F01N3/10; F01N3/24; F01N3/38; F01N2270/00; F01N2270/04; F01N3/30; F02; F02B; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
In a device for reduction of exhaust gas particulates in an exhaust pipe, comprising in combination a two-pole high-voltage generator, a plurality of conductors alternately connected to one or the other of said poles, said conductors constituting substantially the only obstruction to flow of exhaust gas through said pipe and occupying a total area which is less than 50% and more than 10% of the internal cross section of the pipe, said connectors each consisting of a conductive metal grid arranged inside said pipe perpendicular to the general direction of flow of said exhaust gases, and means for introducing air into said pipe upstream of said conductors; the improvement wherein each said conductive metal grid is of spiderweb configuration consisting of a plurality of radially extending wires supporting and spacing apart a plurality of concentric circular wires.
Claim 2
Dependent Claim
137 words
In a device for reduction of exhaust gas particulates in an exhaust pipe, comprising in combination a two-pole high-voltage generator, a plurality of conductors alternately connected to one or the other of said poles, said conductors constituting substantially the only obstruction to flow of exhaust gas through said pipe and occupying a total area which is less than 50% and more than 10% of the internal cross section of the pipe, said connectors each consisting of a conductive metal grid arranged inside said pipe perpendicular to the general direction of flow of said exhaust gases, and means for introducing air into said pipe upstream of said conductors; the improvement wherein each said conductive metal grid is of spiderweb configuration consisting of a plurality of radially extending wires supporting and spacing apart a plurality of concentric circular wires.
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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) | 1996-04-05 | 1996-10-05 | 1997-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-05 | 2000-10-05 | 2001-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-05 | 2004-10-05 | 2005-04-06 | $7700.00 | Window Closed / Lapsed |