US3313532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-smog device
Assignee: ACF Industries Inc
•
Filing: 1965-01-22
•
Granted: 1967-04-11
•
Expires: 1985-01-22
Abstract
No abstract record available.
Inventors
- 👤 Harold A Carlson
- 👤 James T Bickhaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:20
CPC Classifications
F; F02; F02M; F02M3/00; F02M3/08; F02M3/09; F02M23/00; F02M23/04; F02M23/08; F02M23/09; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S261/00; Y10S261/19; Y10S261/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A CARBURETOR FOR AN INTERNAL COMBUSTION ENGINE COMPRISING A MIXTURE CONDUIT HAVING A DOWNSTREAM END PORTION ADAPTED TO BE MOUNTED ON AN ENGINE INTAKE MANIFOLD, A THROTTLE VALVE IN SAID DOWNSTREAM END PORTION OF THE MIXTURE CONDUIT, MEANS FORMING AN IDLE FUEL SYSTEM IN SAID DOWNSTREAM END PORTION AND INCLUDING AN IDLE PORT OPENING INTO SAID MIXTURE CONDUIT, AN AIR PASSAGEWAY CONNECTING SAID IDLE PORT TO ATMOSPHERE, AIR BLEED VALVE MEANS IN SAID PASSAGEWAY RESPONSIVE TO VACUUM AT SAID IDLE PORT, SAID AIR BLEED VALVE MEANS BEING OPENED AT A PREDETERMINED VACUUM AT SAID IDLE PORT TO PERMIT AIR TO BE BELD IN SAID IDLE PORT FOR LEANING OUT THE AIR AND FUEL MIXTURE AND BEING CLOSED UPON A DECREASE IN SAID VACUUM TO BLOCK THE FLOW OF AIR THROUGH SAID PASSAGEWAY, AND AIR BLEED CONTROL MEANS UPSTREAM OF SAID VALVE MEANS TO METER THE FLOW OF AIR BLED IN SAID PASSAGEWAY WHEN SAID VALVE MEANS IS OPENED, SAID CONTROL MEANS BEING ADJUSTABLE TO VARY SELECTIVELY THE VOLUME OF AIR BEING BLED IN SAID AIR PASSAGEWAY WHEN SAID VALVE MEANS IS OPENED AT SAID PREDETERMINED VACUUM.
Claim 2
Dependent Claim
186 words
A CARBURETOR FOR AN INTERNAL COMBUSTION ENGINE COMPRISING A MIXTURE CONDUIT HAVING A DOWNSTREAM END PORTION ADAPTED TO BE MOUNTED ON AN ENGINE INTAKE MANIFOLD, A THROTTLE VALVE IN SAID DOWNSTREAM END PORTION OF THE MIXTURE CONDUIT, MEANS FORMING AN IDLE FUEL SYSTEM IN SAID DOWNSTREAM END PORTION AND INCLUDING AN IDLE PORT OPENING INTO SAID MIXTURE CONDUIT, AN AIR PASSAGEWAY CONNECTING SAID IDLE PORT TO ATMOSPHERE, AIR BLEED VALVE MEANS IN SAID PASSAGEWAY RESPONSIVE TO VACUUM AT SAID IDLE PORT, SAID AIR BLEED VALVE MEANS BEING OPENED AT A PREDETERMINED VACUUM AT SAID IDLE PORT TO PERMIT AIR TO BE BELD IN SAID IDLE PORT FOR LEANING OUT THE AIR AND FUEL MIXTURE AND BEING CLOSED UPON A DECREASE IN SAID VACUUM TO BLOCK THE FLOW OF AIR THROUGH SAID PASSAGEWAY, AND AIR BLEED CONTROL MEANS UPSTREAM OF SAID VALVE MEANS TO METER THE FLOW OF AIR BLED IN SAID PASSAGEWAY WHEN SAID VALVE MEANS IS OPENED, SAID CONTROL MEANS BEING ADJUSTABLE TO VARY SELECTIVELY THE VOLUME OF AIR BEING BLED IN SAID AIR PASSAGEWAY WHEN SAID VALVE MEANS IS OPENED AT SAID PREDETERMINED VACUUM.
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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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |