US3774071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headlight control
Assignee: Individual
•
Filing: 1972-07-24
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Granted: 1973-11-20
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Expires: 1992-07-24
Abstract
Abstract A vehicle is provided with a relay and circuit for automatically turning on the headlights as soon as the engine is turned on and oil pressure reaches normal operating level or the transmission is automatically shifted into drive and for turning the headlights off when the ignition is turned off or the engine stops.
Inventors
- 👤 R Goodrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:55
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/04; B60Q1/14; B60Q1/1415; B60Q1/1423; B60Q1/143; B60Q9/00; B60Q9/001
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
135 words
An automatic headlight control device for use in a vehicle having a battery, headlights, a headlight switch in series with said battery in a first path and having at least a first and second position such that said first position interconnects said headlights to said battery; and an ignition switch in series with said battery in a second path parallel to said first path, comprising: a. a main relay having a coil and a normally opened contact element; b. first circuit means serially interconnecting said contact element between the second position of said headlight switch and said headlights; c. normally open switch means responsive to the operation of the vehicle and closing in response thereto; and d. second circuit means serially interconnecting said ignition switch, said switch means and said relay coil to said battery.
Claim 2
Dependent Claim
135 words
An automatic headlight control device for use in a vehicle having a battery, headlights, a headlight switch in series with said battery in a first path and having at least a first and second position such that said first position interconnects said headlights to said battery; and an ignition switch in series with said battery in a second path parallel to said first path, comprising: a. a main relay having a coil and a normally opened contact element; b. first circuit means serially interconnecting said contact element between the second position of said headlight switch and said headlights; c. normally open switch means responsive to the operation of the vehicle and closing in response thereto; and d. second circuit means serially interconnecting said ignition switch, said switch means and said relay coil to said battery.
Claim 3
Dependent Claim
19 words
An automatic headlight control device as in claim 1 wherein said switch means includes an automatic transmission position switch.
Claim 4
Dependent Claim
19 words
An automatic headlight control device as in claim 1 wherein said switch means includes an oil pressure switch circuit.
Claim 5
Dependent Claim
21 words
An automatic headlight control device as in claim 1 and further comprising headlight selection means serially interconnected in said first path.
References Cited (Backward Citations)
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 |