US3609681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuit for alternately flashing automobile headlamps
Assignee: Individual
•
Filing: 1969-05-22
•
Granted: 1971-09-28
•
Expires: 1989-05-22
Abstract
Abstract A control circuit for the headlamps of a vehicle includes the conventional switches for high beam and low beam control; and includes an additional circuit for effecting alternate blinking or flashing of the high beam lamps or filaments with override for continuous illumination by the high beam lamps or filaments when desired.
Inventors
- 👤 John R Saul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:11
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/50; B60Q1/544
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
319 words
In a vehicle including at least one pair of headlamps, each of said headlamps having a high beam filament and a low beam filament, a control circuit for selectively passing current through said filaments comprising: a. a direct current voltage source having first and second terminals; b. first circuit means electrically interconnecting each of said filaments with said first terminal of said voltage source; c. first switch means having an input terminal and first and second output terminals for alternately electrically interconnecting said input terminal with said first and second output terminals; d. second circuit means interconnecting each of said low beam filaments with said first output terminal of said first switch means; e. third circuit means for interconnecting the input terminal of said first switch means with the second terminal of said voltage source; f. automatic switching means having an input terminal and first and second output terminals, said automatic switching means operative to automatically alternately electrically interconnect said input terminal with said first and second output terminals; g. fourth circuit means for electrically interconnecting the input terminal of said automatic switching means with the second terminal of said voltage source; h. fifth circuit means electrically interconnecting said first output terminal of said automatic switching means with one of said high beam filaments; i. sixth circuit means electrically interconnecting said second output terminal of said automatic switching means with the other of said high beam filaments; and j. first and second diode means, each having first and second terminals, which exhibit between the two terminals a low impedance to current flowing in one direction and a high impedance to current flowing in the opposite direction, said first diode means being electrically interconnected between said fifth circuit means and the second output terminal of said first switch means, said second diode means electrically interconnected between said sixth circuit means and said second output terminal of said first switch means.
Claim 2
Dependent Claim
319 words
In a vehicle including at least one pair of headlamps, each of said headlamps having a high beam filament and a low beam filament, a control circuit for selectively passing current through said filaments comprising: a. a direct current voltage source having first and second terminals; b. first circuit means electrically interconnecting each of said filaments with said first terminal of said voltage source; c. first switch means having an input terminal and first and second output terminals for alternately electrically interconnecting said input terminal with said first and second output terminals; d. second circuit means interconnecting each of said low beam filaments with said first output terminal of said first switch means; e. third circuit means for interconnecting the input terminal of said first switch means with the second terminal of said voltage source; f. automatic switching means having an input terminal and first and second output terminals, said automatic switching means operative to automatically alternately electrically interconnect said input terminal with said first and second output terminals; g. fourth circuit means for electrically interconnecting the input terminal of said automatic switching means with the second terminal of said voltage source; h. fifth circuit means electrically interconnecting said first output terminal of said automatic switching means with one of said high beam filaments; i. sixth circuit means electrically interconnecting said second output terminal of said automatic switching means with the other of said high beam filaments; and j. first and second diode means, each having first and second terminals, which exhibit between the two terminals a low impedance to current flowing in one direction and a high impedance to current flowing in the opposite direction, said first diode means being electrically interconnected between said fifth circuit means and the second output terminal of said first switch means, said second diode means electrically interconnected between said sixth circuit means and said second output terminal of said first switch means.
Claim 3
Dependent Claim
73 words
A control circuit as set forth in claim 1 including a second pair of headlamps, each having a high beam filament therein, the high beam filament of one of said second pair of headlamps electrically connected between said first circuit means and said fifth circuit means, and the high beam filament of the other one of said second pair of headlamps electrically connected between said first circuit means and said sixth circuit means.
Claim 4
Dependent Claim
28 words
The control circuit as set forth in claim 1 wherein said third circuit means includes a switch for selectively opening and closing a circuit through said voltage source.
Claim 5
Dependent Claim
28 words
The control circuit as set forth in claim 1 wherein said fourth circuit means includes a switch for selectively opening and closing a circuit through said voltage source.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |