US4965549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warning device for internal combustion engine
Assignee: Individual
•
Filing: 1989-06-12
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Granted: 1990-10-23
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Expires: 2009-06-12
Abstract
Abstract A warning system for an internal combustion engine that is not provided with external source of electric power and which indicates a malfunction or abnormal condition in the engine. The warning system is operated from the engine ignition circuit upon initial starting to provide self checking.
Inventors
- 👤 Takashi Koike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:24
CPC Classifications
B; B60; B60R; B60R16/00; B60R16/02; B60R16/023; B60R16/0231; B60R16/0232; F; F02; F02B; F02B61/00; F02B61/04; F02B61/045
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
99 words
A warning system for an internal combustion engine devoid of an external source of electric power, generating means driven by said engine, for generating the sole electric power upon the operation of said engine, an electrically powered warning device for indicating an abnormality in an engine condition, and means for operating said warning device upon the existence of both initial starting of said engine and running of said engine at a speed above a predetermined speed and in the absence of an abnormality in the engine condition for a time period only for self checking of said warning device.
Claim 2
Dependent Claim
99 words
A warning system for an internal combustion engine devoid of an external source of electric power, generating means driven by said engine, for generating the sole electric power upon the operation of said engine, an electrically powered warning device for indicating an abnormality in an engine condition, and means for operating said warning device upon the existence of both initial starting of said engine and running of said engine at a speed above a predetermined speed and in the absence of an abnormality in the engine condition for a time period only for self checking of said warning device.
Claim 3
Dependent Claim
24 words
A warning system for an internal combustion engine as set forth in claim 1 wherein the warning device is powered by the generating means.
Claim 4
Dependent Claim
40 words
A warning system for an internal combustion engine as set forth in claim 1 wherein the means for operating the warning device upon initial starting of the engine operates the warning device until the generating means provides full power output.
Claim 5
Dependent Claim
24 words
A warning system for an internal combustion engine as set forth in claim 3 wherein the warning device is powered by the generating means.
Claim 6
Dependent Claim
30 words
A warning system for an internal combustion engine as set forth in claim 1 wherein the generating means comprises a magneto generator for firing a spark plug of the engine.
Claim 7
Dependent Claim
40 words
A warning system for an internal combustion engine as set forth in claim 5 wherein the means for operating the warning device upon initial starting of the engine operates the warning device until the generating means provides full power output.
Claim 8
Dependent Claim
24 words
A warning system for an internal combustion engine as set forth in claim 6 wherein the warning device is powered by the generating means.
Claim 9
Dependent Claim
38 words
A warning system for an internal combustion engine as set forth in claim 5 wherein the means for operating the warning device comprises timer means for operating the warning means before the generating voltage becomes a predetermined voltage.
References Cited (Backward Citations)
US4317364A
Cited
US4447801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |