US3796546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust gas purifying system for an internal combustion engine
Assignee: Automobiles Peugeot SA
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Filing: 1971-06-28
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Granted: 1974-03-12
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Expires: 1991-06-28
Abstract
Abstract A single enclosure in which partition walls define two chambers and a by-pass passage interposed between the chambers. Each chamber contains an exhaust gas catalytic cleaning unit. A passage puts the outlet of the first chamber in communication with the inlet of the second chamber so that the exhaust gas enters the first chamber and issues from the second chamber. A single valve member is employed to either close the outlet of the by-pass passage and open the outlet passage of the second chamber or open the outlet of the by-pass passage and close the outlet passage of the second chamber.
Inventors
- 👤 B Poullot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:22
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N13/00; F01N13/009; F01N13/0097; F01N3/18; F01N3/20; F01N3/2053; F01N3/30; F01N3/34; F01N2290/00; F01N2410/00; F01N2410/02; F01N2450/00; F01N2450/30; F01N2550/00; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
A system as claimed in claim 1, wherein the exhaust gas purifying units are disposed obliquely in the chambers and thus define in each chamber two tapering spaces on opposite sides of the corresponding purifying unit which tapering spaces have large ends respectively adjacent the inlet and the outlet of the chamber.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |