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US3774152A Expired / Lapsed US ⏱️ 0.0 years remaining

Speed controlled taillight system for a vehicle

Assignee: Individual
•
Filing: 1971-11-01
•
Granted: 1973-11-20
•
Expires: 1991-11-01
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Abstract

Abstract A pair of groups of taillights for a vehicle for indicating to the driver of a following vehicle the condition of driving operation of the vehicle equipped with the groups of taillights. The lights of each group are of different colors and a switching arrangement, including speed responsive control switch means and brake operated switch means, are utilized to provide color combinations and color changes to indicate driving conditions of the vehicle, to the following driver.

Inventors

  • 👤 J Tandy

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 02:28
CPC Classifications
G; G01; G01P; G01P1/00; G01P1/07; G01P1/08; G01P1/10; B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44; B60Q1/444

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 251 words
A speed controlled taillight system for a vehicle, said system comprising; first, second and third lamp means each of a different color; said first lamp means including a lamp having a pair of filaments; vehicle wheel speed responsive control switch means; a brake operated switch; a manually operated ignition control switch; a source of electrical potential; and circuit means including: a. first circuitry comprising one of the filaments of said first lamp means, speed responsive control switch means, ignition control switch, and said source, for illuminating said first lamp means when the vehicle is at rest or the wheels thereof are rotating forwardly up to a predetermined low speed; b. second circuitry including said second lamp means, ignition switch, and said source, for illuminating said second lamp means; c. third circuitry including said third lamp means, brake operated switch and said source, for illuminating said third lamp means responsive to energization of the vehicle brake; d. said speed responsive control switch means being responsive to deceleration of the vehicle to said predetermined low speed to close the circuit through said first lamp means so that said first and third lamp means are illuminated during braking of the vehicle at and below said predetermined low speed; e. and fourth circuitry including said source, a manually operated lamp switch, and the other filament of said pair in said first lamp means, for illuminating said first lamp means independently of said others of the lamp means and independently of the others of said circuits.
Claim 2
Dependent Claim 251 words
A speed controlled taillight system for a vehicle, said system comprising; first, second and third lamp means each of a different color; said first lamp means including a lamp having a pair of filaments; vehicle wheel speed responsive control switch means; a brake operated switch; a manually operated ignition control switch; a source of electrical potential; and circuit means including: a. first circuitry comprising one of the filaments of said first lamp means, speed responsive control switch means, ignition control switch, and said source, for illuminating said first lamp means when the vehicle is at rest or the wheels thereof are rotating forwardly up to a predetermined low speed; b. second circuitry including said second lamp means, ignition switch, and said source, for illuminating said second lamp means; c. third circuitry including said third lamp means, brake operated switch and said source, for illuminating said third lamp means responsive to energization of the vehicle brake; d. said speed responsive control switch means being responsive to deceleration of the vehicle to said predetermined low speed to close the circuit through said first lamp means so that said first and third lamp means are illuminated during braking of the vehicle at and below said predetermined low speed; e. and fourth circuitry including said source, a manually operated lamp switch, and the other filament of said pair in said first lamp means, for illuminating said first lamp means independently of said others of the lamp means and independently of the others of said circuits.
Claim 3
Dependent Claim 44 words
The system defined in claim 1 in which said second circuitry comprises a circuit including said source, ignition switch, and second lamp means only, for illuminating said second lamp means independently of the others of said lamp means and independently of vehicle wheel speeds.
Claim 4
Dependent Claim 47 words
The system defined in claim 1 in which said second circuitry comprises a circuit including said source, ignition switch, second lamp means, and a second speed responsive control switch means, for illuminating said second lamp means respOnsive to increase of vehicle wheel speeds above said predetermined speed.

References Cited (Backward Citations)

US1573638A Cited
US2090332A Cited
US2079539A Cited
US2632152A Cited
FR1175300A Cited
US3395388A Cited
US3535680A Cited
US3444514A Cited
US3601794A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-11-19 1977-05-21 1977-11-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-11-19 1981-05-21 1981-11-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-11-19 1985-05-21 1985-11-20 $7700.00 Window Closed / Lapsed

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