US3561736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor throttle valve
Assignee: Carter Automotive Co Inc
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Filing: 1969-01-09
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Granted: 1971-02-09
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Expires: 1989-01-09
Abstract
Abstract A carburetor having a conventional throttle valve for controlling the flow of air and fuel in the mixture conduit thereof is further provided with an auxiliary half-throttle arranged in such a manner that the half-throttle blocks off a portion of the mixture conduit during at least part of the opening movement of the conventional throttle thereby increasing air and fuel velocity in the mixing conduit at part throttle conditions.
Inventors
- 👤 Silas Owen Dye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:23
CPC Classifications
F; F02; F02M; F02M3/00; F02M3/08; F02M3/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
In a carburetor for an internal combustion engine having a fuel bowl, fuel level control means, a mixing conduit, main and idle fuel systems for discharging fuel into the said mixing conduit and a throttle valve mounted on a rotatable shaft for regulating the quantity of air/fuel mixture delivered to an intake manifold of an internal combustion engine, the improvement comprising means for blocking off substantially one-half the said mixing conduit whereby all of the air must pass one edge of the said throttle during at least a portion of the initial opening of said throttle, thereby increasing the velocity of the said air, and in which the said means for blocking comprises a halfthrottle journaled about the said shaft and disposed in the mixing conduit adjacent the said idle fuel system.
Claim 2
Dependent Claim
132 words
In a carburetor for an internal combustion engine having a fuel bowl, fuel level control means, a mixing conduit, main and idle fuel systems for discharging fuel into the said mixing conduit and a throttle valve mounted on a rotatable shaft for regulating the quantity of air/fuel mixture delivered to an intake manifold of an internal combustion engine, the improvement comprising means for blocking off substantially one-half the said mixing conduit whereby all of the air must pass one edge of the said throttle during at least a portion of the initial opening of said throttle, thereby increasing the velocity of the said air, and in which the said means for blocking comprises a halfthrottle journaled about the said shaft and disposed in the mixing conduit adjacent the said idle fuel system.
Claim 3
Dependent Claim
24 words
The carburetor of claim 1 including a biasing spring for urging the said half-throttle toward closed position when said throttle is in closed position.
Claim 4
Dependent Claim
136 words
In a carburetor for an internal combustion engine having a fuel bowl, fuel level control means, a mixing conduit, main and idle fuel systems for discharging fuel into the said mixing conduit and a throttle valve mounted on a rotatable shaft for regulating the quantity of air/fuel mixture delivered to an intake manifold of an internal combustion engine, the improvement comprising means for blocking off substantially one-half the said mixing conduit whereby all of the air must pass one edge of the said throttle during at least a portion of the initial opening of said throttle, thereby increasing the velocity of the said air, and in which the said means for blocking includes a half throttle journaled about the said shaft and disposed in the mixing conduit on the side opposite the said idle fuel system.
Claim 5
Dependent Claim
136 words
In a carburetor for an internal combustion engine having a fuel bowl, fuel level control means, a mixing conduit, main and idle fuel systems for discharging fuel into the said mixing conduit and a throttle valve mounted on a rotatable shaft for regulating the quantity of air/fuel mixture delivered to an intake manifold of an internal combustion engine, the improvement comprising means for blocking off substantially one-half the said mixing conduit whereby all of the air must pass one edge of the said throttle during at least a portion of the initial opening of said throttle, thereby increasing the velocity of the said air, and in which the said means for blocking includes a half throttle journaled about the said shaft and disposed in the mixing conduit on the side opposite the said idle fuel system.
Claim 6
Dependent Claim
53 words
The carburetor of claim 1 in which the said half throttle is mounted on a sleeve which surrounds the said shaft over a portion of its length, said sleeve extending through the wall of said mixing conduit, and an actuating lever mounted on said sleeve for controlling the movement of said half throttle.
Claim 7
Dependent Claim
30 words
The carburetor of claim 4 further including sequential actuating means whereby said halF-throttle is caused to begin an opening movement at a predetermined angle of opening of the said throttle.
Claim 8
Dependent Claim
63 words
The carburetor of claim 5 in which the said sequential actuating means includes a slot in the said actuating lever, a rocker arm pivotally mounted on said carburetor, a lever arm on said shaft, a connector link connecting said lever arm and one end of said rocker arm and a second link connecting the other end of said rocker arm with said slot.
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |