US3249175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed regulating mechanisms
Assignee: Curtiss Wright Corp
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Filing: 1964-04-22
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Granted: 1966-05-03
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Expires: 1984-04-22
Abstract
No abstract record available.
Inventors
- 👤 Donald J Baxter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:38
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
IN A MOTOR VEHICLE ENGINE GOVERNING SYSTEM, THE COMBINATION COMPRISING: ACTUATING MEANS FOR MOVING THE ENGINE THROTTLE TO REGULATE VEHICLE SPEED; AN ELECTROMAGNETICALLY OPERABLE VALVE OPERABLY CONNECTED WITH THE ACTUATING MEANS FOR CONTROLLING THE OPERATION THEREOF; ELECTROMAGNETIC MEANS AT THE VALVE FOR OPERATING THE VALVE; CIRCUITRY FOR CONTROLLING THE OPERATION OF SAID ELECTROMAGNETIC MEANS INCLUDING A BATTERY, AN ALTERNATOR, CIRCUIT MEANS OPERABLY CONNECTED WITH THE BATTERY FOR PRODUCING AN ELECTRIC SIGNAL OF ONE POLARITY TO REPRESENT A PRESELECTED SPEED FOR THE VEHICLE, OTHER CIRCUIT MEANS OPERABLY CONNECTED WITH THE ALTERNATOR FOR PRODUCING A UNI-DIRECTIONAL SIGNAL OF OPPOSITE POLARITY HAVING A MAGNITUDE AT LEAST APPROXIMATELY PROPORTIONAL TO VEHICLE SPEED, AMPLIFYING MEANS OPERABLY CONNECTED TO EACH OF SAID CIRCUIT MEANS AND SAID ELECTROMAGNETIC MEANS FOR PRODUCING AN AMPLIFIED SIGNAL TO CONTROL THE ELECTROMAGNETIC MEANS, SWITCH MEANS OPERABLE TO INITIATE CONTROL OF THE ELECTROMAGNETIC MEANS BY SAID CIRCUITRY; AND A HOLDING CIRCUIT FOR MAINTAINING CONTROL OF THE ELECTROMAGNETIC VALVE OPERATING MEANS BY THE SAID CIRCUITRY AFTER THE OPERATION OF SAID SWITCH MEANS, SUCH HOLDING CIRCUIT INCLUDING CONTACT MEANS OPERABLY CONNECTED WITH THE ELECTROMAGNETIC VALVE OPERATING MEANS TO RENDER THE HOLDING CIRCUIT EFFECTIVE UPON OPERATION OF THE ELECTROMAGNETIC MEANS AND VALVE IN RESPONSE TO SAID AMPLIFIED SIGNAL.
Claim 2
Dependent Claim
203 words
IN A MOTOR VEHICLE ENGINE GOVERNING SYSTEM, THE COMBINATION COMPRISING: ACTUATING MEANS FOR MOVING THE ENGINE THROTTLE TO REGULATE VEHICLE SPEED; AN ELECTROMAGNETICALLY OPERABLE VALVE OPERABLY CONNECTED WITH THE ACTUATING MEANS FOR CONTROLLING THE OPERATION THEREOF; ELECTROMAGNETIC MEANS AT THE VALVE FOR OPERATING THE VALVE; CIRCUITRY FOR CONTROLLING THE OPERATION OF SAID ELECTROMAGNETIC MEANS INCLUDING A BATTERY, AN ALTERNATOR, CIRCUIT MEANS OPERABLY CONNECTED WITH THE BATTERY FOR PRODUCING AN ELECTRIC SIGNAL OF ONE POLARITY TO REPRESENT A PRESELECTED SPEED FOR THE VEHICLE, OTHER CIRCUIT MEANS OPERABLY CONNECTED WITH THE ALTERNATOR FOR PRODUCING A UNI-DIRECTIONAL SIGNAL OF OPPOSITE POLARITY HAVING A MAGNITUDE AT LEAST APPROXIMATELY PROPORTIONAL TO VEHICLE SPEED, AMPLIFYING MEANS OPERABLY CONNECTED TO EACH OF SAID CIRCUIT MEANS AND SAID ELECTROMAGNETIC MEANS FOR PRODUCING AN AMPLIFIED SIGNAL TO CONTROL THE ELECTROMAGNETIC MEANS, SWITCH MEANS OPERABLE TO INITIATE CONTROL OF THE ELECTROMAGNETIC MEANS BY SAID CIRCUITRY; AND A HOLDING CIRCUIT FOR MAINTAINING CONTROL OF THE ELECTROMAGNETIC VALVE OPERATING MEANS BY THE SAID CIRCUITRY AFTER THE OPERATION OF SAID SWITCH MEANS, SUCH HOLDING CIRCUIT INCLUDING CONTACT MEANS OPERABLY CONNECTED WITH THE ELECTROMAGNETIC VALVE OPERATING MEANS TO RENDER THE HOLDING CIRCUIT EFFECTIVE UPON OPERATION OF THE ELECTROMAGNETIC MEANS AND VALVE IN RESPONSE TO SAID AMPLIFIED SIGNAL.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |