Patent US3227428A successfully refreshed from Google Patents.
US3227428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic choke mechanism
Assignee: Ford Motor Co
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Filing: 1962-08-02
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Granted: 1966-01-04
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Expires: 1982-08-02
Abstract
No abstract record available.
Inventors
- 👤 William W Charron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:48
CPC Classifications
F; F02; F02M; F02M1/00; F02M1/08; F02M1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A CARBURETOR FOR AN INTERNAL COMBUSTION ENGINE COMPRISING AN INDUCTION PASSAGE, A THROTTLE VALVE POSITIONED IN SAID INDUCTION PASSAGE, A CHOKE VALVE POSITIONED IN SAID INDUCTION PASSAGE ANTERIOR TO SAID THROTTLE VALVE, SAID CHOKE VALVE BEING UNBALANCED SO THAT ENGINE SUCTION TENDS TO OPEN SAID CHOKE VALVE, MANS OPERABLY CONNECTED TO SAID CHOKE VALVE FOR MOVING SAID CHOKE VALVE BETWEEN AN OPENED AND A CLOSED POSITION, SPRING MEANS OPERABLY CONNECTED TO SAID CHOKE VALVE FOR RESISTING ENGINE SUCTION INDUCED OPENING OF SAID CHOKE VALVE, AND MAGNETIC MEANS SUPPORTED BY SAID CARBURETOR IN SAID INDUCTION PASSAGE FOR ENGAGING SAID CHOKE VALVE WHEN SAID CHOKE VALVE IS IN ITS FULLY CLOSED POSITION, SAID CHOKE VALVE BEING FORMED AT LEAST IN PART OF A MAGNETIC MATERIAL WHEREBY SAID MAGNETIC MEANS RESISTS ENGINE SUCTION INDUCED OPENING OF SAID CHOKE VALVE.
Claim 2
Dependent Claim
136 words
A CARBURETOR FOR AN INTERNAL COMBUSTION ENGINE COMPRISING AN INDUCTION PASSAGE, A THROTTLE VALVE POSITIONED IN SAID INDUCTION PASSAGE, A CHOKE VALVE POSITIONED IN SAID INDUCTION PASSAGE ANTERIOR TO SAID THROTTLE VALVE, SAID CHOKE VALVE BEING UNBALANCED SO THAT ENGINE SUCTION TENDS TO OPEN SAID CHOKE VALVE, MANS OPERABLY CONNECTED TO SAID CHOKE VALVE FOR MOVING SAID CHOKE VALVE BETWEEN AN OPENED AND A CLOSED POSITION, SPRING MEANS OPERABLY CONNECTED TO SAID CHOKE VALVE FOR RESISTING ENGINE SUCTION INDUCED OPENING OF SAID CHOKE VALVE, AND MAGNETIC MEANS SUPPORTED BY SAID CARBURETOR IN SAID INDUCTION PASSAGE FOR ENGAGING SAID CHOKE VALVE WHEN SAID CHOKE VALVE IS IN ITS FULLY CLOSED POSITION, SAID CHOKE VALVE BEING FORMED AT LEAST IN PART OF A MAGNETIC MATERIAL WHEREBY SAID MAGNETIC MEANS RESISTS ENGINE SUCTION INDUCED OPENING OF SAID CHOKE VALVE.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |