US3675634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for containing and subsequently consuming the fuel vapors escaping to the atmosphere for an internal combustion engine
Assignee: Mazda Motor Corp
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Filing: 1970-09-24
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Granted: 1972-07-11
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Expires: 1990-09-24
Abstract
Abstract A system for containing and subsequently consuming the fuel vapors escaping to the atmosphere from an internal combustion engine in which a vapor tube of a condense tank connected to a fuel tank is connected to a connection tube connecting the crankcase to an inlet manifold, and having a valve which opens only during engine operation. A canister is connected between the crankcase and an air cleaner.
Inventors
- 👤 Yasuo Tatsutomi
- 👤 Tetsuo Noma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:47
CPC Classifications
F; F02; F02M; F02M25/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
163 words
A system for containing and subsequently consuming the fuel vapor normally escaping to the atmosphere in an internal combustion engine having an inlet manifold for introducing a mixture of fuel and air to said engine, a carburetor for supplying said mixture of air and fuel to said inlet manifold and an air cleaner mounted on said carburetor, said system comprising: a fuel tank, a condense tank for liquefying and retaining fuel vapor, a crankcase, a canister for absorbing the fuel vapor, first conduit means extending between said crankcase and said inlet manifold, control valve means disposed in said first conduit means so as to open said first conduit means only during engine operation, second conDuit means connecting said condense tank with a portion of said first conduit means between said control valve means and the crankcase, and means including said second conduit means and a portion of said first conduit means for connecting said fuel tank, condense tank, crankcase, and canister, in series.
Claim 2
Independent Claim
163 words
A system for containing and subsequently consuming the fuel vapor normally escaping to the atmosphere in an internal combustion engine having an inlet manifold for introducing a mixture of fuel and air to said engine, a carburetor for supplying said mixture of air and fuel to said inlet manifold and an air cleaner mounted on said carburetor, said system comprising: a fuel tank, a condense tank for liquefying and retaining fuel vapor, a crankcase, a canister for absorbing the fuel vapor, first conduit means extending between said crankcase and said inlet manifold, control valve means disposed in said first conduit means so as to open said first conduit means only during engine operation, second conDuit means connecting said condense tank with a portion of said first conduit means between said control valve means and the crankcase, and means including said second conduit means and a portion of said first conduit means for connecting said fuel tank, condense tank, crankcase, and canister, in series.
Claim 3
Dependent Claim
19 words
The system as claimed in claim 1, wherein said canister is connected between said crankcase and said air cleaner.
Claim 4
Dependent Claim
27 words
The system as claimed in claim 1, wherein said fuel tank includes fuel intake tube and means fluid coupling said fuel intake tube to said condense tank.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |