Patent US3618581A successfully refreshed from Google Patents.
US3618581A
Expired / Lapsed
US
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Carburetors for internal combustion engines
Assignee: Societe du Carburateur Zenith SA
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Filing: 1969-08-29
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Granted: 1971-11-09
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Expires: 1989-08-29
Abstract
Abstract Carburetors for internal combustion engines are provided with means which, on stopping of the engine, obturate the fuel path from the float chamber to the inlet manifold, and thus prevent the passage of fuel from the float chamber while the engine is standing. Restarting of the engine is thereby facilitated.
Inventors
- 👤 Jocelyn Elie Louis Simonet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:12
CPC Classifications
F; F02; F02M; F02M5/00; F02M5/10; F02M3/00; F02M3/02; Y; Y10; Y10S; Y10S123/00; Y10S123/11; Y10S261/00; Y10S261/74; Y10S261/81
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
In a carburetor for an internal combustion engine having an ignition coil and a key switch for controlling the circuit of said ignition coil, said carburetor including an exit orifice for fuel located on one side with respect to an inlet manifold to which said fuel is delivered for normal running, constant level chamber for feeding said orifice with fuel through a liquid path, the improvement consisting in an obturator in the form of a rod on said liquid path and having a pointed end which engages said orifice, which rod transversely passes through said maniFold and, outside thereof, is urged in direction of said orifice by a coaxial coil spring and in opposite direction by a coaxial electromagnet coil, the coil of said electromagnet being fed by the same circuit as the ignition coil.
Claim 2
Dependent Claim
135 words
In a carburetor for an internal combustion engine having an ignition coil and a key switch for controlling the circuit of said ignition coil, said carburetor including an exit orifice for fuel located on one side with respect to an inlet manifold to which said fuel is delivered for normal running, constant level chamber for feeding said orifice with fuel through a liquid path, the improvement consisting in an obturator in the form of a rod on said liquid path and having a pointed end which engages said orifice, which rod transversely passes through said maniFold and, outside thereof, is urged in direction of said orifice by a coaxial coil spring and in opposite direction by a coaxial electromagnet coil, the coil of said electromagnet being fed by the same circuit as the ignition coil.
References Cited (Backward Citations)
US2009109A
Cited
US2131848A
Cited
US2445097A
Cited
AT175416B
Cited
FR1118214A
Cited
US2943615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |