US3555507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cancelling electronic auto turn signal system
Assignee: BURSONICS Inc
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Filing: 1967-05-19
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Granted: 1971-01-12
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Expires: 1987-05-19
Abstract
Abstract DISCLOSED IS AN AUTOMOTIVE TURN SIGNAL SYSTEM IN WHICH CANCELLATION IS EFFECTED ELECTRONICALLY RATHER THAN MECHANICALLY. THE TURN SIGNAL LEVER ARM IS CONTINUOUSLY BIASED TO A NEUTRAL POSITION AND RETURNS TO THIS POSITION AS SOON AS TI IS RELEASED BY THE DRIVER. MOMENTARY ACTUATION OF THE LEVER CLOSES A HOLDING CIRCUIT AND THE APPROPRIATE LIGHTS BLINK UNTIL AUTOMATICALLY CCANCELLED BY A PULSE COUNT- ING CIRCUIT. CANCELLATION TIME MAY BE MODIFIED BY VEHICLE SPEED. HAZARD WARNING, MANUAL CANCELLATION, AND ADAPTATION TO BRAKE LIGHT SWITCHING ARE ALSO DISCLOSED.
Inventors
- 👤 Benard Burson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:30
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/34; B60Q1/40
Claims Analysis
Total Claims: 0
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |