US5201291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throttle valve controller
Assignee: Aisan Industry Co Ltd
•
Filing: 1992-08-21
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Granted: 1993-04-13
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Expires: 2012-08-21
Abstract
Abstract A throttle valve controller for an engine includes a throttle valve pivotally movable along with a throttle shaft in an intake passage of the engine, an electronic control transmission path for transmitting input torque to the throttle shaft, an electromagnetic actuator for applying torque to the electronic control transmission path, a mechanical control transmission path for transmitting manipulation force of an accelerator pedal to the throttle shaft, and switching means for connecting one of the electronic control and mechanical control transmission paths and disconnecting the other.
Inventors
- 👤 Yukiya Katoh
- 👤 Takeru Yasuda
- 👤 Sunao Kitamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:57
CPC Classifications
F; F02; F02D; F02D11/00; F02D11/06; F02D11/10; F02D11/107; F02D9/00; F02D9/02; F02D2009/0201; F02D2009/0267; F02D2009/0277
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
A throttle valve controller for an engine comprising: a throttle valve pivotally movable along with a throttle shaft in an intake passage of the engine; an electronic control transmission path for transmitting input torque to the throttle shaft; an electromagnetic actuator for applying torque to the electronic control transmission path; a mechanical control transmission path for transmitting manipulation force of an accelerator pedal to the throttle shaft; and switching means for connecting one of the electronic control and mechanical control transmission paths and disconnecting the other.
Claim 2
Dependent Claim
86 words
A throttle valve controller for an engine comprising: a throttle valve pivotally movable along with a throttle shaft in an intake passage of the engine; an electronic control transmission path for transmitting input torque to the throttle shaft; an electromagnetic actuator for applying torque to the electronic control transmission path; a mechanical control transmission path for transmitting manipulation force of an accelerator pedal to the throttle shaft; and switching means for connecting one of the electronic control and mechanical control transmission paths and disconnecting the other.
Claim 3
Dependent Claim
49 words
The throttle valve controller as defined in claim 1, wherein the switching means has three positions including a first position wherein one of the transmission paths is connected, a second position wherein the other is connected and the other position wherein both of the transmission paths are simultaneously disconnected.
Claim 4
Dependent Claim
94 words
The throttle valve controller as defined in claim 1, wherein the electronic control and mechanical control transmission paths are disposed coaxially of the throttle shaft, with a clutch plate provided axially displaceably therebetween; the switching means includes a solenoid for axially displacing the clutch plate; and the axial displacement of the clutch plate results in switching between a position wherein the electronic control transmission path is connected but the mechanical control transmission path is disconnected and a position wherein the electronic control transmission path is disconnected but the mechanical control transmission path is connected.
Claim 5
Dependent Claim
58 words
The throttle valve controller as defined in claim 1, wherein, so long as no malfunction signal is produced, the switching means connects the electronic control transmission path but the mechanical control transmission path is disconnected, and if a malfunction signal is produced, the switching means disconnects the electronic control transmission path but connects the mechanical control transmission path.
Claim 6
Dependent Claim
31 words
The throttle valve controller as defined in claim 4, wherein the switching means can switch from the electronic control transmission path to the mechanical control transmission path but cannot switch oppositely.
Claim 7
Dependent Claim
24 words
The throttle valve controller as defined in claim 3, wherein the clutch plate is mounted on the throttle shaft through a ball spline structure.
Claim 8
Dependent Claim
42 words
The throttle valve controller as defined in claim 6, wherein a shaft of the electromagnetic actuator, the throttle shaft and a shaft of an accelerator lever pivotally movable by manipulation force of the accelerator pedal are arranged in parallel to one another.
Claim 9
Dependent Claim
35 words
The throttle valve controller as defined in claim 7, wherein the clutch plate is biased in such a position wherein the electronic control transmission path is disconnected but the mechanical control transmission path is connected.
Claim 10
Dependent Claim
39 words
The throttle valve controller as defined in claim 7, wherein clutch reaction force of the clutch plate is set in a such direction that the electronic control transmission path is disconnected but the mechanical control transmission path is connected.
References Cited (Backward Citations)
JPH01173355A
Cited
JPH01227825A
Cited
US5134979A
Cited
US5117791A
Cited
US5121727A
Cited
US5161506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-12 | 1996-10-12 | 1997-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-12 | 2000-10-12 | 2001-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-12 | 2004-10-12 | 2005-04-13 | $7700.00 | Window Closed / Lapsed |