Patent US3524754A successfully refreshed from Google Patents.
Patent US3346771A successfully refreshed from Google Patents.
US3346771A
Expired / Lapsed
US
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Digital electronic speed control governor utilizing pulse width comparison
Assignee: Individual
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Filing: 1964-10-27
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Granted: 1967-10-10
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Expires: 1984-10-27
Abstract
No abstract record available.
Inventors
- 👤 Robert S Sutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:26
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/24; F02D41/26; F02D41/28; F02D31/00; F02D31/001; F02D31/002; F02D41/30; F02D41/38; H; H02; H02H; H02H7/00; H02H7/08; H02H7/093; F02D11/00; F02D11/06; F02D11/10; F02D2011/101; F02D2011/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A DIGITAL ELECTRONIC SPEED CONTROL GOVERNOR FOR CONTROLLING THE SPEED OF A CONTROLLED APPARATUS HAVING A SPEEDCONTROLLING REGULATOR, SAID GOVERNOR COMPRISING MEANS ASSOCIATED WITH SAID APPARATUS AND RESPONSIVE TO THE SPEED THEREOF FOR GENERATING AN ELECTRONIC PULSE HAVING A WIDTH PROPORTIONAL TO SAID SPEED, MEANS FOR DIVIDING THE THUS GENERATED PULSE INTO TWO PULSE OUTPUTS, A VARIABLE WIDTH SQUARE WAVE BRANCH CIRCUIT CONNECTED TO ONE OF SAID PULSE OUTPUTS AND EFFECTIVE TO CONVERT THE RECEIVED PULSE INTO A SQUARE WAVE HAVING A WIDTH VARYING IN ACCORDANCE WITH THE VARIATION OF SPEED OF THE CONTROLLED APPARATUS, A CONSTANT WIDTH SQUARE WAVE BRANCH CIRCUIT CONNECTED TO THE OTHER OF SAID PULSE OUTPUTS AND EFFECTIVE TO CONVERT THE RECEIVED PULSE INTO A SQUARE WAVE HAVING A CONSTANT WIDTH PROPORTIONAL TO THE SPEED DESIRED FOR THE APPARATUS, SAID BRANCH CIRCUITS BEING CONNECTED IN PARALLEL RELATIONSHIP TO ONE ANOTHER, MEANS IN ONE OF SAID BRANCH CIRCUITS FOR INVERTING THE SQUARE WAVE PRODUCED BY THE PULSE CONVERSION ACTION OF SAID ONE BRANCH CIRCUIT.
Claim 2
Dependent Claim
167 words
A DIGITAL ELECTRONIC SPEED CONTROL GOVERNOR FOR CONTROLLING THE SPEED OF A CONTROLLED APPARATUS HAVING A SPEEDCONTROLLING REGULATOR, SAID GOVERNOR COMPRISING MEANS ASSOCIATED WITH SAID APPARATUS AND RESPONSIVE TO THE SPEED THEREOF FOR GENERATING AN ELECTRONIC PULSE HAVING A WIDTH PROPORTIONAL TO SAID SPEED, MEANS FOR DIVIDING THE THUS GENERATED PULSE INTO TWO PULSE OUTPUTS, A VARIABLE WIDTH SQUARE WAVE BRANCH CIRCUIT CONNECTED TO ONE OF SAID PULSE OUTPUTS AND EFFECTIVE TO CONVERT THE RECEIVED PULSE INTO A SQUARE WAVE HAVING A WIDTH VARYING IN ACCORDANCE WITH THE VARIATION OF SPEED OF THE CONTROLLED APPARATUS, A CONSTANT WIDTH SQUARE WAVE BRANCH CIRCUIT CONNECTED TO THE OTHER OF SAID PULSE OUTPUTS AND EFFECTIVE TO CONVERT THE RECEIVED PULSE INTO A SQUARE WAVE HAVING A CONSTANT WIDTH PROPORTIONAL TO THE SPEED DESIRED FOR THE APPARATUS, SAID BRANCH CIRCUITS BEING CONNECTED IN PARALLEL RELATIONSHIP TO ONE ANOTHER, MEANS IN ONE OF SAID BRANCH CIRCUITS FOR INVERTING THE SQUARE WAVE PRODUCED BY THE PULSE CONVERSION ACTION OF SAID ONE BRANCH CIRCUIT.
References Cited (Backward Citations)
US3184606A
Cited
US3281630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |