Patent US2302968A successfully refreshed from Google Patents.
Patent US5199257A successfully refreshed from Google Patents.
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
•
Granted: 1993-04-06
•
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 14:09
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.
References Cited (Backward Citations)
US2771736A
Cited
US2989144A
Cited
US3398685A
Cited
US3524316A
Cited
GB1329840A
Cited
US3979193A
Cited
US4038049A
Cited
GB1535500A
Cited
US4216653A
Cited
US4355504A
Cited
JPS5612011A
Cited
US4441971A
Cited
US4299190A
Cited
US4376637A
Cited
US4587808A
Cited
US4571938A
Cited
US4622810A
Cited
US4604868A
Cited
EP0114696A2
Cited
US4741746A
Cited
US4798049A
Cited
EP0283240A2
Cited
JPS63232817A
Cited
JPS63272911A
Cited
US4922714A
Cited
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 |