US4907844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uncancelled turn signal indicator
Assignee: Individual
•
Filing: 1989-03-27
•
Granted: 1990-03-13
•
Expires: 2009-03-27
Abstract
Abstract An uncancelled turn signal indicator senses both that the monitored vehicle has a speed in excess of a predetermined threshold, and that a turn signal indicator for the vehicle has been selected for more than a predetermined period of activation. Upon sensing coincidence of both conditions, audible and visual indicators are provided to the driver of the vehicle to alert the driver of this condition.
Inventors
- 👤 Ralph C. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:31
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/34; B60Q1/36
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
148 words
An uncancelled turn signal indicator for use with a vehicle having at least one turn signal indicator, the uncancelled turn signal indicator comprising: speed sense means for providing a speed sense signal when said vehicle's speed at least equals a predetermined speed; turn signal indicator sense means for sensing activation and deactivation of said turn signal indicator; duration sense means responsive to said turn signal indicator sense means for providing an output signal when said turn signal indicator has been continuously activated for more than at least a predetermined period of activation; logic means responsive to said speed sense signal and said output signal for providing a trigger signal when both said speed sense signal and said output signal are present; and indicator means responsive to said trigger signal for providing an indication to a driver of said vehicle that said turn signal indicator has not been cancelled.
Claim 2
Dependent Claim
148 words
An uncancelled turn signal indicator for use with a vehicle having at least one turn signal indicator, the uncancelled turn signal indicator comprising: speed sense means for providing a speed sense signal when said vehicle's speed at least equals a predetermined speed; turn signal indicator sense means for sensing activation and deactivation of said turn signal indicator; duration sense means responsive to said turn signal indicator sense means for providing an output signal when said turn signal indicator has been continuously activated for more than at least a predetermined period of activation; logic means responsive to said speed sense signal and said output signal for providing a trigger signal when both said speed sense signal and said output signal are present; and indicator means responsive to said trigger signal for providing an indication to a driver of said vehicle that said turn signal indicator has not been cancelled.
Claim 3
Dependent Claim
33 words
The uncancelled turn signal indicator of claim 1 wherein said turn signal indicator is activated by a series of pulses, and said predetermined period of activation comprises a predetermined number of said pulses.
Claim 4
Dependent Claim
23 words
The uncancelled turn signal indicator of claim 1 wherein said indicator means includes display means for providing a visual indication to said driver.
Claim 5
Dependent Claim
24 words
The uncancelled turn signal indicator of claim 1 wherein said indicator means includes audible alarm means for providing an audible indication to said driver.
Claim 6
Dependent Claim
35 words
The uncancelled turn signal indicator of claim 1 wherein said indicator means includes: display means for providing a visual indication to said driver; and audible alarm means for providing an audible indication to said driver.
Claim 7
Dependent Claim
17 words
The uncanceled turn signal indicator of claim 1 wherein said predetermined speed equals 30 miles per hour.
References Cited (Backward Citations)
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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) | 1993-03-12 | 1993-09-11 | 1994-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-12 | 1997-09-11 | 1998-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-12 | 2001-09-11 | 2002-03-13 | $7700.00 | Window Closed / Lapsed |