US3613359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aspirated exhaust system
Assignee: Lear Siegler Inc
•
Filing: 1970-01-15
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Granted: 1971-10-19
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Expires: 1990-01-15
Abstract
Abstract AN AIR ASPIRATING DEVICE IN THE FORM OF A TUBULAR MEMBER WHICH IS DISPOSED IN THE EXHAUST GAS PASSAGE ADJACENT THE EXHAUST VALVE AND EQUIPPED WITH A CHECK VALVE TO ASPIRATE AMBIENT AIR INTO THE EXHAUST STREAM THEREBY TO PROMOTE CONTINUING EXHAUST GAS COMBUSTION AFTER REMOVAL FROM THE COMBUSTION CHAMBER. THE AIR ASPIRATING DEVICE MAY BE INSTALLED IN THE HEAD ASSEMBLY OF THE ENGINE OR IN THE EXHAUST MANIFOLD OR IN AN ADAPTOR MEMBER WHICH IS TO BE DISPOSED BETWEEN THE HEAD ASSEMBLY AND THE EXHAUST MANIFOLD.
Inventors
- 👤 Raymond C Posh
- 👤 William T Downs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:35
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/30; F01N3/34; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |