US3980065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic actuator for carburetor choke valve
Assignee: Honda Motor Co Ltd
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Filing: 1975-04-04
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Granted: 1976-09-14
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Expires: 1995-04-04
Abstract
Abstract An automatic actuator for a carburetor choke valve of the type having a case supporting a heat and electrically conductive shaft therein and attached to said shaft a temperature responsive choke valve operating means, a heater for actuating said choke valve operating means, and a heat sensing means for sensing heat from said heater and for controlling current to said heater.
Inventors
- 👤 Toshio Nomura
- 👤 Masaaki Ozaki
- 👤 Makoto Ishii
- 👤 Masahiko Iiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:22
CPC Classifications
F; F02; F02M; F02M1/00; F02M1/08; F02M1/10; F02M1/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
113 words
In an internal combustion engine carburetion system having a carburetor including an air intake passageway and a choke valve, the improvement of an automatic actuator for the carburetor choke valve comprising: a shaft comprised of heat conductive material fixed relative to said carburetor, temperature responsive choke valve operating means attached to said shaft for actuating said choke valve, a heater attached to said shaft for heating said choke valve operating means, and heat sensing means attached to said shaft for sensing heat from said choke valve operating means and for regulating current to said heater; said choke valve operating means, heater and heat sensing means being thermally associated with said heat conductive shaft.
Claim 2
Dependent Claim
113 words
In an internal combustion engine carburetion system having a carburetor including an air intake passageway and a choke valve, the improvement of an automatic actuator for the carburetor choke valve comprising: a shaft comprised of heat conductive material fixed relative to said carburetor, temperature responsive choke valve operating means attached to said shaft for actuating said choke valve, a heater attached to said shaft for heating said choke valve operating means, and heat sensing means attached to said shaft for sensing heat from said choke valve operating means and for regulating current to said heater; said choke valve operating means, heater and heat sensing means being thermally associated with said heat conductive shaft.
Claim 3
Dependent Claim
109 words
In an internal combustion engine carburetion system having a carburetor including an air intake passageway and a choke valve, the improvement of an automatic actuator for the carburetor choke valve comprising: a shaft comprised of electrically conductive material fixed relative to said carburetor, temperature responsive choke valve operating means attached to said shaft for actuating said choke valve, a heater attached to said shaft for heating said choke valve operating means, and heat sensing means attached to said shaft for sensing heat from said choke valve operating means and for regulating current to said heater; said heater and heat sensing means being electrically associated with said electrically conductive shaft.
Claim 4
Dependent Claim
109 words
In an internal combustion engine carburetion system having a carburetor including an air intake passageway and a choke valve, the improvement of an automatic actuator for the carburetor choke valve comprising: a shaft comprised of electrically conductive material fixed relative to said carburetor, temperature responsive choke valve operating means attached to said shaft for actuating said choke valve, a heater attached to said shaft for heating said choke valve operating means, and heat sensing means attached to said shaft for sensing heat from said choke valve operating means and for regulating current to said heater; said heater and heat sensing means being electrically associated with said electrically conductive shaft.
Claim 5
Dependent Claim
134 words
In an internal combustion engine carburetion system having a carburetor including an air intake passageway and a choke valve, the improvement of an automatic actuator for the carburetor choke valve comprising: a shaft comprised of heat and electrically conductive material fixed relative to said carburetor, temperature responsive choke valve operating means attached to said shaft for actuating said choke valve, a heater attached to said shaft for heating said choke valve operating means, and heat sensing means attached to said shaft for sensing heat from said choke valve operating means and for regulating current to said heater; said choke valve operating means, heater, and heat sensing means being thermally associated with said heat and electrically conductive shaft; and said heater and heat sensing means being electrically associated with said heat and electrically conductive shaft.
Claim 6
Dependent Claim
134 words
In an internal combustion engine carburetion system having a carburetor including an air intake passageway and a choke valve, the improvement of an automatic actuator for the carburetor choke valve comprising: a shaft comprised of heat and electrically conductive material fixed relative to said carburetor, temperature responsive choke valve operating means attached to said shaft for actuating said choke valve, a heater attached to said shaft for heating said choke valve operating means, and heat sensing means attached to said shaft for sensing heat from said choke valve operating means and for regulating current to said heater; said choke valve operating means, heater, and heat sensing means being thermally associated with said heat and electrically conductive shaft; and said heater and heat sensing means being electrically associated with said heat and electrically conductive shaft.
Claim 7
Dependent Claim
41 words
The apparatus as defined in claim 1 wherein said heater is comprised of a circular ceramic plate with a heating wire printed spirally on the face of said ceramic plate, said ceramic plate having a central opening to receive said shaft.
Claim 8
Dependent Claim
30 words
The apparatus as defined in claim 1 wherein said choke valve operating means is comprised of a spiral bimetal connected to said shaft and mechanically associated with said choke valve.
Claim 9
Dependent Claim
34 words
The apparatus as defined in claim 1 wherein said heat sensing means is comprised of a heat and electrically conductive bracket with its base end connected to said shaft and supporting a temperature sensor.
Claim 10
Dependent Claim
41 words
The apparatus as defined in claim 2 wherein said heater is comprised of a circular ceramic plate with a heating wire printed spirally on the face of said ceramic plate, said ceramic plate having a central opening to receive said shaft.
Claim 11
Dependent Claim
30 words
The apparatus as defined in claim 2 wherein said choke valve operating means is comprised of a spiral bimetal connected to said shaft and mechanically associated with said choke valve.
Claim 12
Dependent Claim
34 words
The apparatus as defined in claim 2 wherein said heat sensing means is comprised of a heat and electrically conductive bracket with its base end connected to said shaft and supporting a temperature sensor.
Claim 13
Dependent Claim
41 words
The apparatus as defined in claim 3 wherein said heater is comprised of a circular ceramic plate with a heating wire printed spirally on the face of said ceramic plate, said ceramic plate having a central opening to receive said shaft.
Claim 14
Dependent Claim
30 words
The apparatus as defined in claim 3 wherein said choke valve operating means is comprised of a spiral bimetal connected to said shaft and mechanically associated with said choke valve.
Claim 15
Dependent Claim
34 words
The apparatus as defined in claim 3 wherein said heat sensing means is comprised of a heat and electrically conductive bracket with its base end connected to said shaft and supporting a temperature sensor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |