US4083344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for controlling vaporized hydrocarbon of fuel for a gasoline engine
Assignee: Toyota Motor Corp
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Filing: 1976-05-11
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Granted: 1978-04-11
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Expires: 1996-05-11
Abstract
Abstract There is disclosed a system for controlling vaporized hydrocarbon of fuel for a gasoline engine wherein the vaporized hydrocarbon is led from a carburetor float chamber to a canister through a pipe in which a chamber for separating fuel and vapor is provided.
Inventors
- 👤 Shigenori Sakurai
- 👤 Shigeo Murakami
- 👤 Masanori Torii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:35
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/08; F02M25/089; F02B; F02B1/00; F02B1/02; F02B1/04; F02M2025/0863
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
97 words
A system for controlling vaporized hydrocarbon of fuel for a gasoline engine, comprising: a carburetor float chamber having inner and outer vents, said float chamber being connected through said inner vent thereof with a carburetor for a gasoline engine driven vehicle; a canister containing an absorbent therein; and means for connecting said outer vent of said float chamber with said canister so that the vaporized hydrocarbon may be led from said float chamber to said canister, said connecting means including a chamber positioned fluidly intermediate said float chamber and said canister for separating fuel and vapor therein.
Claim 2
Independent Claim
97 words
A system for controlling vaporized hydrocarbon of fuel for a gasoline engine, comprising: a carburetor float chamber having inner and outer vents, said float chamber being connected through said inner vent thereof with a carburetor for a gasoline engine driven vehicle; a canister containing an absorbent therein; and means for connecting said outer vent of said float chamber with said canister so that the vaporized hydrocarbon may be led from said float chamber to said canister, said connecting means including a chamber positioned fluidly intermediate said float chamber and said canister for separating fuel and vapor therein.
Claim 3
Dependent Claim
13 words
The system of claim 1 wherein said connecting means is a connecting pipe.
Claim 4
Dependent Claim
15 words
The system of claim 1 wherein said separating chamber is connected with a purge pipe.
Claim 5
Dependent Claim
33 words
The system of claim 1 which further comprises an electromagnetic valve provided in place between said float chamber and said canister for controlling the flow of the vaporized hydrocarbon through said connecting pipe.
Claim 6
Dependent Claim
33 words
The system of claim 4 wherein said electromagnetic valve is actuated in response to the ON-OFF action of an ignition key which is electrically connected with said electromagnetic valve and a battery, respectively.
Claim 7
Dependent Claim
24 words
The system of claim 3 wherein said purge pipe is connected with said carburetor at a position near from a throttle valve provided therein.
Claim 8
Dependent Claim
17 words
The system of claim 3 wherein a check valve is provided in position in said purge pipe.
Claim 9
Dependent Claim
20 words
The system of claim 4 wherein said separating chamber is provided in position between said electromagnetic valve and said canister.
Claim 10
Dependent Claim
18 words
The system of claim 1 wherein said separating chamber is positioned below the upper level of said absorbent.
Claim 11
Dependent Claim
18 words
The system of claim 1 wherein said separating chamber is positioned above the upper level of said absorbent.
Claim 12
Independent Claim
164 words
A system for controlling vaporized hydrocarbon of fuel for a gasoline engine comprising: a carburetor float chamber having inner and outer vents, said float chamber being connected through said inner vent thereof with a carburetor for a gasoline engine-driven vehicle; a canister containing an absorbent therein; and a connecting pipe for connecting said outer vent of said float chamber with said canister so that the vaporized hydrocarbon may be led from said float chamber to said canister, said connecting pipe including a chamber for separating fuel and vapor therein and a purge pipe that is connected with said carburetor at a position near a throttle valve provided therein, there being further included an electromagnetic valve provided in place between said float chamber and said canister for controlling the flow of the vaporized hydrocarbon through said connecting pipe, said electromagnetic valve being actuated in response to the ON-OFF action of an ignition key which is electrically connected with said electromagnetic valve and a battery, respectively.
Claim 13
Independent Claim
164 words
A system for controlling vaporized hydrocarbon of fuel for a gasoline engine comprising: a carburetor float chamber having inner and outer vents, said float chamber being connected through said inner vent thereof with a carburetor for a gasoline engine-driven vehicle; a canister containing an absorbent therein; and a connecting pipe for connecting said outer vent of said float chamber with said canister so that the vaporized hydrocarbon may be led from said float chamber to said canister, said connecting pipe including a chamber for separating fuel and vapor therein and a purge pipe that is connected with said carburetor at a position near a throttle valve provided therein, there being further included an electromagnetic valve provided in place between said float chamber and said canister for controlling the flow of the vaporized hydrocarbon through said connecting pipe, said electromagnetic valve being actuated in response to the ON-OFF action of an ignition key which is electrically connected with said electromagnetic valve and a battery, respectively.
Claim 14
Dependent Claim
17 words
The system of claim 11 wherein a check valve is provided in position in said purge pipe.
Claim 15
Dependent Claim
20 words
The system of claim 11 wherein said separating chamber is provided in position between said electromagnetic valve and said canister.
Claim 16
Dependent Claim
18 words
The system of claim 11 wherein said separating chamber is positioned below the upper level of said absorbent.
Claim 17
Dependent Claim
18 words
The system of claim 11 wherein said separating chamber is positioned above the upper level of said absorbent.
Claim 18
Independent Claim
108 words
A system for controlling vaporized hydrocarbon of fuel for a gasoline engine, comprising: a carburetor float chamber having inner and outer vents, said float chamber being connected through said inner vent thereof with a carburetor for a gasoline enginedriven vehicle; a canister containing an absorbent therein; and a connecting pipe for connecting said outer vent of said float chamber with said canister so that the vaporized hydrocarbon may be led from said float chamber to said canister, said connecting pipe including a chamber for separating fuel and vapor therein and a purge pipe that is connected with said carburetor at a position near a throttle valve provided therein.
Claim 19
Independent Claim
108 words
A system for controlling vaporized hydrocarbon of fuel for a gasoline engine, comprising: a carburetor float chamber having inner and outer vents, said float chamber being connected through said inner vent thereof with a carburetor for a gasoline enginedriven vehicle; a canister containing an absorbent therein; and a connecting pipe for connecting said outer vent of said float chamber with said canister so that the vaporized hydrocarbon may be led from said float chamber to said canister, said connecting pipe including a chamber for separating fuel and vapor therein and a purge pipe that is connected with said carburetor at a position near a throttle valve provided therein.
Claim 20
Dependent Claim
33 words
The system of claim 16 which further comprises an electromagnetic valve provided in place between said float chamber and said canister for controlling the flow of the vaporized hydrocarbon through said connecting pipe.
Claim 21
Dependent Claim
33 words
The system of claim 17 wherein said electromagnetic valve is actuated in response to the ON-OFF action of an ignition key which is electrically connected with said electromagnetic valve and a battery, respectively.
Claim 22
Dependent Claim
17 words
The system of claim 16 wherein a check valve is provided in positioned in said purge pipe.
Claim 23
Dependent Claim
20 words
The system of claim 17 wherein said separating chamber is provided in position between said electromagnetic valve and said canister.
Claim 24
Dependent Claim
18 words
The system of claim 16 wherein said separating chamber is positioned below the upper level of said absorbent.
Claim 25
Dependent Claim
18 words
The system of claim 16 wherein said separating chamber is positioned above the upper level of said absorbent.
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) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |