US3293489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headlamp outage indicator
Assignee: Ford Motor Co
•
Filing: 1964-11-19
•
Granted: 1966-12-20
•
Expires: 1984-11-19
Abstract
No abstract record available.
Inventors
- 👤 Richard G Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:55
CPC Classifications
B; B60; B60Q; B60Q11/00; B60Q11/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A SYSTEM FOR INDICATING A BURNED OUT CONDITION OF A HEADLAMP THE COMBINATION COMPRISING, A SOURCE OF ELECTRICAL ENERGY, A HEADLAMP, A SENSING ELEMENT COUPLING AT ALL TIMES SAID SOURCE OF ELECTRICAL ENERGY WITH SAID HEADLAMP, SAID SENSING ELEMENT INCLUDING A FIRST TERMINAL COUPLED TO SAID SOURCE ELECTRICAL ENERGY AND A SECOND TERMINAL CONNECTED TO SAID HEADLAMP, A U-SHAPED BIMETAL ELEMENT HAVING ONE END CONNECTED TO AND ANCHORED AT SAID FIRST TERMINAL AND HAVING THE OTHER END CONNECTED TO AND ANCHORED AT SAID OTHER TERMINAL, A CENTRAL CONTACT POSITIONED TO ENGAGE THE CENTRAL PORTION OF SAID U-SHAPED BIMETAL ELEMENT WHEN THERE IS NOT CURRENT FLOW THROUGH SAID ELEMENT OF SAID HEADLAMP, AND AN INDICATOR LAMP CONNECTED TO SAID CENTRAL CONTACT.
Claim 2
Dependent Claim
121 words
IN A SYSTEM FOR INDICATING A BURNED OUT CONDITION OF A HEADLAMP THE COMBINATION COMPRISING, A SOURCE OF ELECTRICAL ENERGY, A HEADLAMP, A SENSING ELEMENT COUPLING AT ALL TIMES SAID SOURCE OF ELECTRICAL ENERGY WITH SAID HEADLAMP, SAID SENSING ELEMENT INCLUDING A FIRST TERMINAL COUPLED TO SAID SOURCE ELECTRICAL ENERGY AND A SECOND TERMINAL CONNECTED TO SAID HEADLAMP, A U-SHAPED BIMETAL ELEMENT HAVING ONE END CONNECTED TO AND ANCHORED AT SAID FIRST TERMINAL AND HAVING THE OTHER END CONNECTED TO AND ANCHORED AT SAID OTHER TERMINAL, A CENTRAL CONTACT POSITIONED TO ENGAGE THE CENTRAL PORTION OF SAID U-SHAPED BIMETAL ELEMENT WHEN THERE IS NOT CURRENT FLOW THROUGH SAID ELEMENT OF SAID HEADLAMP, AND AN INDICATOR LAMP CONNECTED TO SAID CENTRAL CONTACT.
References Cited (Backward Citations)
US1994620A
Cited
US3047771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |