US3309609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical speedometer with electrical energy regulating means
Assignee: Ford Motor Co
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Filing: 1963-10-03
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Granted: 1967-03-14
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Expires: 1983-10-03
Abstract
No abstract record available.
Inventors
- 👤 Richard D Brewer
- 👤 Bernard G Redin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:08
CPC Classifications
G; G01; G01P; G01P1/00; G01P1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN AN ELECTRICALLY OPERATED SPEEDOMETER FOR A MOTOR VEHICLE, A SOURCE OF ELECTRICAL ENERGY, A RECEIVER HAVING A PLURALITY OF WINDINGS AND A ROTOR DRIVEN BY SAID WINDINGS, A SPEED INDICATING MEANS, SAID ROTOR BEING CONNECTED TO SAID SPEED INDICATING MEANS, MEANS ADAPTED TO BE DRIVEN BY A ROTATABLE PORTION OF A MOTOR VEHICLE AT A SPEED INDICATIVE OF MOTOR SPEED, SAID MEANS COUPLED TO SAID SOURCE OF ELECTRICAL ENERGY AND SAID WINDINGS AND HAVING MEANS FOR SEQUENTIALLY ENERGIZING SAID WINDINGS FROM SAID SOURCE OF ELECTRICAL ENERGY, A TRANSISTOR HAVING AN EMITTER, A COLLECTOR AND A BASE, SAID EMITTER AND COLLECTOR BEING CONNECTED IN SERIES CIRCUIT WITH SAID SOURCE OF ELECTRICAL ENERGY AND SAID WINDINGS, AND MEANS COUPLED TO SAID BASE FOR CAUSING THE CONDUCTION OF SAID TRANSITOR TO INCREASE AS A FUNCTION OF INCREASING VEHICLE SPEED.
Claim 2
Dependent Claim
137 words
IN AN ELECTRICALLY OPERATED SPEEDOMETER FOR A MOTOR VEHICLE, A SOURCE OF ELECTRICAL ENERGY, A RECEIVER HAVING A PLURALITY OF WINDINGS AND A ROTOR DRIVEN BY SAID WINDINGS, A SPEED INDICATING MEANS, SAID ROTOR BEING CONNECTED TO SAID SPEED INDICATING MEANS, MEANS ADAPTED TO BE DRIVEN BY A ROTATABLE PORTION OF A MOTOR VEHICLE AT A SPEED INDICATIVE OF MOTOR SPEED, SAID MEANS COUPLED TO SAID SOURCE OF ELECTRICAL ENERGY AND SAID WINDINGS AND HAVING MEANS FOR SEQUENTIALLY ENERGIZING SAID WINDINGS FROM SAID SOURCE OF ELECTRICAL ENERGY, A TRANSISTOR HAVING AN EMITTER, A COLLECTOR AND A BASE, SAID EMITTER AND COLLECTOR BEING CONNECTED IN SERIES CIRCUIT WITH SAID SOURCE OF ELECTRICAL ENERGY AND SAID WINDINGS, AND MEANS COUPLED TO SAID BASE FOR CAUSING THE CONDUCTION OF SAID TRANSITOR TO INCREASE AS A FUNCTION OF INCREASING VEHICLE SPEED.
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |