Patent US3206665A successfully refreshed from Google Patents.
US3206665A
Expired / Lapsed
US
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Digital speed controller
Assignee: Lear Siegler Inc
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Filing: 1962-12-19
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Granted: 1965-09-14
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Expires: 1982-12-19
Abstract
No abstract record available.
Inventors
- 👤 Charles S Burlingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:40
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/22; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/911; Y10S388/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A DIGITAL MOTOR CONTROL SERVO SYSTEM HAVING A SOURCE OF COMMAND PULSES INDICATIVE OF A DEISRED MOTOR SPEED, A SOURCE OF FEEDBACK PULSES INDICATIVE OF THE ACTUAL MOTOR SPEED, A REVERSIBLE BINARY COUNTER CONNECTED TO SAID SOURCES SO AS TO ACCUMULATE THE DIFFERENCE BETWEEN THE TOTAL NUMBERS OF PULSES DELIVERED BY EACH SOURCEW, AND CONTROL MEANS FOR VARYING THE MOTOR SPEED IN ACCORDANCE WITH THE ACCUMULATED COUNT IN SAID COUNTER, THE IMPROVEMENT COMPRISING INHIBITION MEANS CONNECTED BETWEEN SAID SOURCES AND SAID COUNTER AND TO THE OUTPUT OF SAID COUNTER TO PREVENT PULSES FROM REACHING SAID COUNTER WHENEVER SUCH PULSES WOULD OVERSATURATE SAID COUNTER.
Claim 2
Dependent Claim
104 words
IN A DIGITAL MOTOR CONTROL SERVO SYSTEM HAVING A SOURCE OF COMMAND PULSES INDICATIVE OF A DEISRED MOTOR SPEED, A SOURCE OF FEEDBACK PULSES INDICATIVE OF THE ACTUAL MOTOR SPEED, A REVERSIBLE BINARY COUNTER CONNECTED TO SAID SOURCES SO AS TO ACCUMULATE THE DIFFERENCE BETWEEN THE TOTAL NUMBERS OF PULSES DELIVERED BY EACH SOURCEW, AND CONTROL MEANS FOR VARYING THE MOTOR SPEED IN ACCORDANCE WITH THE ACCUMULATED COUNT IN SAID COUNTER, THE IMPROVEMENT COMPRISING INHIBITION MEANS CONNECTED BETWEEN SAID SOURCES AND SAID COUNTER AND TO THE OUTPUT OF SAID COUNTER TO PREVENT PULSES FROM REACHING SAID COUNTER WHENEVER SUCH PULSES WOULD OVERSATURATE SAID COUNTER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |