US3722492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forcibly closing an engine throttle valve
Assignee: Honda Motor Co Ltd
•
Filing: 1970-12-23
•
Granted: 1973-03-27
•
Expires: 1990-12-23
Abstract
Abstract An apparatus for forcibly closing a throttle valve in a suction passage of an internal combustion engine, the throttle valve being movable to open and close by an acceleration operation member such as an acceleration pedal or the like. The apparatus for forcibly closing the throttle valve is mounted on one side of the throttle valve, and is operated when the throttle valve is not closed and the acceleration operation member is released from operation. The apparatus for forcibly closing the throttle valve comprises an electromagnetic solenoid with a core which is advanced with rotation when the solenoid is energized, there being a first detecting switch which is closed when the acceleration operation member is released from operation and a second detecting switch which is closed when the throttle valve is in its open position, the two switches being interposed in series in an electrical circuit containing the solenoid and an electric source.
Inventors
- 👤 Y Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:00
CPC Classifications
G; G05; G05G; G05G1/00; G05G1/30; F; F01; F01L; F01L1/00; F01L2710/00; F01L2710/006; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20528
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
100 words
For a throttle valve in a suction passage of an internal combustion engine wherein the throttle valve is opened by the operation of an acceleration operation member and is closed when the acceleration operation member is released, an improvement comprising first means for forcibly closing said throttle valve, and second means including detecting means to detect when the acceleration operation member is released and the throttle valve remains opened, and means coupling the first and second means to effect operation of the first means when the second means detects release of the acceleration operation member and an open throttle valve.
Claim 2
Dependent Claim
100 words
For a throttle valve in a suction passage of an internal combustion engine wherein the throttle valve is opened by the operation of an acceleration operation member and is closed when the acceleration operation member is released, an improvement comprising first means for forcibly closing said throttle valve, and second means including detecting means to detect when the acceleration operation member is released and the throttle valve remains opened, and means coupling the first and second means to effect operation of the first means when the second means detects release of the acceleration operation member and an open throttle valve.
Claim 3
Dependent Claim
51 words
An improvement as claimed in claim 1 wherein said first means comprises a displaceable and turnable member having an inoperative position and being displaceable to an operative position with rotation to close the throttle valve, and an electromagnet acting on said displaceable and turnable member upon activation of said second means.
Claim 4
Dependent Claim
58 words
An improvement as claimed in claim 2 wherein said second means comprises an electrical circuit containing said electromagnet, an electrical power source therefor, a first switch means which is closed when the throttle valve is open, and a second switch means in series with the first switch means and being closed when the acceleration operation member is released.
Claim 5
Dependent Claim
62 words
An improvement as claimed in claim 3 comprising a rotatable shaft supporting said throttle valve, a disc fixedly mounted on said shaft, a pulley loosely mounted for rotation on said disc and coupled to the acceleration operation member for being rotated on said disc by the operation of said acceleration operation member, and a lost motion mechanism coupling said pulley and disc.
Claim 6
Dependent Claim
45 words
An improvement as claimed in claim 4 wherein said lost motion mechanism comprises a spring having one end fixedly connected to the disc and means connected to the other end of the spring and supported for relative travel in a slot provided in said pulley.
Claim 7
Dependent Claim
44 words
An improvement as claimed in claim 4 wherein said displaceable and turnable member is a second disc facing the first disc and in spaced relation therewith when said first means is inoperative, said discs being coupled in rotation when the first means is operated.
Claim 8
Dependent Claim
23 words
An improvement as claimed in claim 6 comprising teeth on said discs engageable with one another when the discs are coupled in rotation.
Claim 9
Dependent Claim
46 words
An improvement as claimed in claim 6 wherein said electromagnet comprises a displaceable core connected to the second disc, said core having a helical slot therein, and a fixed Pin engaged in said slot to produce turning of the second disc as the core is displaced.
Claim 10
Dependent Claim
30 words
An improvement as claimed in claim 6 comprising a return spring acting on said pulley to return the same to an initial position after the acceleration operation member is released.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |