US5027031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Truck trailer lighting control circuit
Assignee: Individual
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Filing: 1989-08-23
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Granted: 1991-06-25
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Expires: 2009-08-23
Abstract
Abstract A lighting control circuit having particular adaptability to tractor-trailer truck usage where a considerable increase of illumination is provided for the best interests of safety. The circuitry provides non-blinking left and right turn signal lights which supplement the blinking of the existing turn signal lights. Additionally, backup lights are programmed into the circuit operation. Through the use of a four-way flasher control, all the lights on the vehicle are caused to serve flashing, signaling an/or blinking purposes, except those provided by the invention which remain non-blinking.
Inventors
- 👤 Robert K. Wheelock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:15
CPC Classifications
H; H05; H05B; H05B39/00; H05B39/09; B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/30; B60Q1/305
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
86 words
In combination with a first circuit having a selectively blinking first signal light, a second circuit including a first transistor controlled by a blink signal controlling said first signal light and actuated on and off with said first signal light of said first circuit and a second transistor actuated, and maintained actuated, by a capacitor slowly charged by operation of said first transistor, energizing a coil actuated relay controlling the energization of a second non-blinking signal light cause by operation of said first blinking signal light.
Claim 2
Dependent Claim
86 words
In combination with a first circuit having a selectively blinking first signal light, a second circuit including a first transistor controlled by a blink signal controlling said first signal light and actuated on and off with said first signal light of said first circuit and a second transistor actuated, and maintained actuated, by a capacitor slowly charged by operation of said first transistor, energizing a coil actuated relay controlling the energization of a second non-blinking signal light cause by operation of said first blinking signal light.
Claim 3
Dependent Claim
15 words
The combination of claim 1 where said second circuit is spliced into said first circuit.
Claim 4
Dependent Claim
91 words
The combination of claim 1 in combination with a third circuit having a selectively blinking third signal light, a fourth circuit including a third transistor controlled by a blink signal controlling said third signal light and actuated on and off with said third signal light of said third circuit and a fourth transistor actuated, and maintained actuated, by a capacitor slowly charged by operation of said third transistor, energizing a coil actuated relay controlling the energization of a fourth non-blinking signal light caused by operation of said third blinking signal light.
Claim 5
Dependent Claim
26 words
The combination of claim 3 where said second circuit is spliced into said first circuit, and where said fourth circuit is spliced into said third circuit.
Claim 6
Dependent Claim
36 words
The combination of claim 3 in combination with a fifth circuit, where said fifth circuit, controlling operation of another signal light, becomes operative only upon energization of said relays in said second and said fourth circuits.
Claim 7
Dependent Claim
13 words
The combination of claim 5 where said another signal light provides non-blinking illumination.
References Cited (Backward Citations)
GB2054289A
Cited
US4751431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |