US4587522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle warning system
Assignee: Individual
•
Filing: 1984-01-27
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Granted: 1986-05-06
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Expires: 2004-01-27
Abstract
Abstract This system provides a warning or alert to persons in vehicles of the presence of emergency vehicles which are emitting audio warning signals. The system converts audio signals to discrete signals, which are also frequency indicative, and then determines whether the discrete frequency indicative signals represent warning signal frequencies. The system also determines whether any warning signal is of sufficient duration to be valid, and if they are, activates the warning device in the vehicle. The warning device may alert the vehicle occupants of emergency vehicles in the vicinity by either audio or visual alarms, or by both.
Inventors
- 👤 Bob E. Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:51
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G08G1/0962; G08G1/0965
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
213 words
A warning system for a vehicle or the like comprising: means for receiving and sensing audio energy and for transducing such audio energy to output signals indicative of the frequencies, and of the amplitude of each frequency, of the audio energy sensed; means for converting output signals from said sensor means to discrete output signals representative of the frequencies of the audio energy received by said sensor means, said signal converting means being in output signal receiving contact with said sensor means; means for measuring the time during which signals are transmitted by said sensor means, and which, after one or more predetermined time period, transmits activating signals, said timer means being in output signal receiving contact with said sensor means; means for counting the discrete signals output by said signal converting means, said counter means being in discrete signal receiving contact with said converting means, and which, after making one or more predetermined count transmits an activating signal; and means for activating an alarm, said alarm activating means being in activating signal receiving contact with both said timer means and said counter means, whereby, when predetermined activating signals are received by said alarm activating means from both said timer means and said counter means said alarm activating means generates alarm activating signals.
Claim 2
Dependent Claim
213 words
A warning system for a vehicle or the like comprising: means for receiving and sensing audio energy and for transducing such audio energy to output signals indicative of the frequencies, and of the amplitude of each frequency, of the audio energy sensed; means for converting output signals from said sensor means to discrete output signals representative of the frequencies of the audio energy received by said sensor means, said signal converting means being in output signal receiving contact with said sensor means; means for measuring the time during which signals are transmitted by said sensor means, and which, after one or more predetermined time period, transmits activating signals, said timer means being in output signal receiving contact with said sensor means; means for counting the discrete signals output by said signal converting means, said counter means being in discrete signal receiving contact with said converting means, and which, after making one or more predetermined count transmits an activating signal; and means for activating an alarm, said alarm activating means being in activating signal receiving contact with both said timer means and said counter means, whereby, when predetermined activating signals are received by said alarm activating means from both said timer means and said counter means said alarm activating means generates alarm activating signals.
Claim 3
Dependent Claim
73 words
The warning system of claim 1 in which the alarm activating means includes at least a first switch and a second switch, said switches being in activating signal receiving contact with both said timer means and said counter means, each said switch normally being in either a signal transmitting condition or in a signal non-transmitting condition, whereby, in response to predetermined signals from said counter means said switches produce an alarm activating signal.
Claim 4
Dependent Claim
71 words
The warning system of claim 2 in which one said switch is normally in a signal non-transmitting condition; a second said switch is normally in a signal transmitting condition, and in which predetermined activating signals from said counter means maintain at least one switch signal nontransmitting or both switches signal transmitting to thereby either not produce or to produce alarm activating signals indicative of the audio frequencies sensed by the system.
Claim 5
Dependent Claim
12 words
The warning system of claim 2 in which the switches are latches.
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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) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |