US3822058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carburetor
Assignee: Individual
•
Filing: 1972-09-14
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Granted: 1974-07-02
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Expires: 1992-09-14
Abstract
Abstract A fuel carbureting device having a housing with an air intake passage therethrough and an engine mounting fixture and utilizing a unique fuel-metering and throttle system including an elongated hollow fuel tube axially movable in the housing and coupled to a source of fuel at an outer end and having an open inner end into which an elongated flat-tapered fuel metering needle is disposed, the needle being essentially fixed in position except for slight axial movement by rotation of an external adjustment knob; the system also including a sliding throttle plate having a relatively large opening through its planar surface registrable with the air intake passage to a degree determined by the throttle linkage, opening of the carburetor''s throttle being accomplished through linkage which causes the plate to move so that more of the opening therein is exposed to the air intake passage, throttle plate movement also causing movement of the fuel tube in an axial direction toward the tip of the tapered needle to enlarge the fuel-metering orifice at the inner end of the fuel tube.
Inventors
- 👤 E Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:06
CPC Classifications
F; F02; F02M; F02M9/00; F02M9/02; F02M9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
349 words
A carburetor for adjustably controlling the amount of fuel and air introduced to an engine on which the carburetor is mounted comprising: a. a carburetor housing with an air intake passage and an axially aligned air-fuel exit passage; b. an elongated hollow fuel delivery tube axially movably mounted in said housing, said tube including an external fuel input end and an internal fuel-metering end; c. a throttle plate having parallel broad planar surfaces with a throttle opening therethrough, said plate being slidably disposed in said housing with said throttle opening registerable with said intake and exit passages to a desired changeable degree, said plate including throttle means for moving said plate and said tube in a direction essentially parallel to the longitudinal axis of said tube and having an elongated bore therethrough axially aligned with the longitudinal axis of said tube; d. an elongated fuel-metering needle having an external end and an axially opposite elongated flat-tapered end portion, said needle passing through said bore and extending into said internal fuel-metering end of said tube and defining at said internal end a fuel-metering orifice which essentially linearly enlarges with movement of said plate and tube in a throttleopening direction exposing more of said throttle opening to said intake and exit passages, said needle including a threaded portion adjacent said external end; e. fuel adjustment means for axially moving said needle relative to said tube coupled to the external end of said elongated fuel-metering needle and including a hollow sleeve with a deformable hollow liner coaxially disposed in said sleeve, said sleeve slidably extending through said elongated bore in said plate and said needle extending through the bore in said hollow liner; f. a rotatable adjustment knob fixedly attached to said external end of said needle, said needle including a threaded portion adjacent said external end; and g. a detent screw mounted in said housing passing through an aperture in said sleeve and deforming inwardly a portion of said liner to contact said threaded portion of said needle whereby said needle is moved axially with the rotation of said adjustment knob.
Claim 2
Dependent Claim
349 words
A carburetor for adjustably controlling the amount of fuel and air introduced to an engine on which the carburetor is mounted comprising: a. a carburetor housing with an air intake passage and an axially aligned air-fuel exit passage; b. an elongated hollow fuel delivery tube axially movably mounted in said housing, said tube including an external fuel input end and an internal fuel-metering end; c. a throttle plate having parallel broad planar surfaces with a throttle opening therethrough, said plate being slidably disposed in said housing with said throttle opening registerable with said intake and exit passages to a desired changeable degree, said plate including throttle means for moving said plate and said tube in a direction essentially parallel to the longitudinal axis of said tube and having an elongated bore therethrough axially aligned with the longitudinal axis of said tube; d. an elongated fuel-metering needle having an external end and an axially opposite elongated flat-tapered end portion, said needle passing through said bore and extending into said internal fuel-metering end of said tube and defining at said internal end a fuel-metering orifice which essentially linearly enlarges with movement of said plate and tube in a throttleopening direction exposing more of said throttle opening to said intake and exit passages, said needle including a threaded portion adjacent said external end; e. fuel adjustment means for axially moving said needle relative to said tube coupled to the external end of said elongated fuel-metering needle and including a hollow sleeve with a deformable hollow liner coaxially disposed in said sleeve, said sleeve slidably extending through said elongated bore in said plate and said needle extending through the bore in said hollow liner; f. a rotatable adjustment knob fixedly attached to said external end of said needle, said needle including a threaded portion adjacent said external end; and g. a detent screw mounted in said housing passing through an aperture in said sleeve and deforming inwardly a portion of said liner to contact said threaded portion of said needle whereby said needle is moved axially with the rotation of said adjustment knob.
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) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |