US4703739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine auxiliary starting device
Assignee: Aisin Corp
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Filing: 1986-03-28
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Granted: 1987-11-03
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Expires: 2006-03-28
Abstract
Abstract An engine auxiliary starting device installed in an outer vent control system of an automotive internal combustion engine for leading fuel evaporative gases from a float chamber to a canister. The auxiliary device includes an electromagnetic valve having an integrated circuit board which includes a sensor mechanism for detecting a predetermined temperature and a timer circuit for supplying an electric current to a solenoid coil for a predetermined time.
Inventors
- 👤 Kenji Yogo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:59
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/08; F02M25/0836; F02M2025/0845; Y; Y10; Y10S; Y10S261/00; Y10S261/67; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/1963
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
196 words
An engine auxiliary starting device for leading fuel evaporative gases produced in a float chamber to a canister and for supplying said fuel evaporative gases condensed by said canister to a fuel tank, said engine auxiliary starting device comprising: an electromagenetic valve which includes a bobbin made of a nonmagnetic material and having an inlet port and outlet port formed therein; a solenoid coil wound on said bobbin; an inner core positioned in a central bore formed in said bobbin; a yoke member made of magnetic material and secured on said bobbin for forming a magnetic circuit with said inner core and said solenoid coil; a valve member positioned so as to be attracted by said inner core upon energization of said solenoid coil; a housing secured to said bobbin; and sensor means for detecting a predetermined temperature upon stopping of the engine and timer circuit means responsive to a detection of at least said predetermined temperature by said sensor means for supplying an electric current to said solenoid coil to open said valve member for a predetermined time, wherein said sensor means and timer circuit means comprise an integrated circuit board positioned in said housing.
Claim 2
Dependent Claim
196 words
An engine auxiliary starting device for leading fuel evaporative gases produced in a float chamber to a canister and for supplying said fuel evaporative gases condensed by said canister to a fuel tank, said engine auxiliary starting device comprising: an electromagenetic valve which includes a bobbin made of a nonmagnetic material and having an inlet port and outlet port formed therein; a solenoid coil wound on said bobbin; an inner core positioned in a central bore formed in said bobbin; a yoke member made of magnetic material and secured on said bobbin for forming a magnetic circuit with said inner core and said solenoid coil; a valve member positioned so as to be attracted by said inner core upon energization of said solenoid coil; a housing secured to said bobbin; and sensor means for detecting a predetermined temperature upon stopping of the engine and timer circuit means responsive to a detection of at least said predetermined temperature by said sensor means for supplying an electric current to said solenoid coil to open said valve member for a predetermined time, wherein said sensor means and timer circuit means comprise an integrated circuit board positioned in said housing.
Claim 3
Dependent Claim
17 words
An engine auxiliary starting device as defined in claim 1, wherein said sensor means includes a thermistor.
Claim 4
Dependent Claim
19 words
An engine auxiliary starting device as defined in claim 1, wherein said timer circuit includes a CMOS integrated circuit.
Claim 5
Dependent Claim
21 words
An engine auxiliary starting device as set forth in claim 1, wherein said valve member is positioned in said magnetic circuit.
Claim 6
Dependent Claim
23 words
An engine auxiliary starting device as defined in claim 1, wherein said valve member is disposed in said central bore of said bobbin.
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) | 1990-11-02 | 1991-05-04 | 1991-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-02 | 1995-05-04 | 1995-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-02 | 1999-05-04 | 1999-11-03 | $7700.00 | Window Closed / Lapsed |