US3173001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control apparatus
Assignee: General Electric Co
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Filing: 1961-09-05
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Granted: 1965-03-09
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 John T Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:49
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/33; G05B19/37; G05B19/371; G05B2219/00; G05B2219/30; G05B2219/43; G05B2219/43006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A PHASE COMPARISON MEANS: A REVERSIBLE COUNTER HAVING TWO INPUT LEADS AND NORMALLY REGISTERING A REFERENCE NUMBER WHICH MAY BE VARIED BY ONE UNIT IN A FIRST ARITHMETIC SENSE FOR EACH PULSE APPLIED TO ONE OF SAID TWO INPUT LEADS AND BY ONE UNIT IN A DIFFERENT ARITHMETIC SENSE FROM SAID FIRST SENSE FOR EACH PULSE APPLIED TO THE OTHER ONE OF SAID TWO INPUT LEADS; DIGITAL TO ANALOG CONVERSION MEANS RESPONSIVE TO THE OUTPUT OF SAID COUNTER FOR GENERATING AN ANALOG SIGNAL OF MANGNITUDE COMMENSURATE WITH THE NUMBER OF UNITS DIFFERENCE BETWEEN SAID REFERENCE NUNBER AND THE ACTUAL NUMBER REGISTERED IN SAID COUNTER OVER AT LEAST A PORTION OF THE RANGE OF OPERATION OF SAID COUNTER; AND INPUT LOGIC MEANS COUPLED TO SAID TWO INPUT LEADS OF SAID COUNTER AND TO SAID CONVERSION MEANS FOR PRECLUDING THE SIMULTANEOUS APPLICATION OF PULSES ON SAID TWO COUNTER INPUT LEADS AND FOR DEFINING BY VIRTUE FO ITS LOGIC STATE, DURING A PORTION F ITS OPERATION, TO WHICH OF SAID INPUTS OF SAID COUNTER A PULSE WAS LAST APPLIED.
Claim 2
Dependent Claim
176 words
A PHASE COMPARISON MEANS: A REVERSIBLE COUNTER HAVING TWO INPUT LEADS AND NORMALLY REGISTERING A REFERENCE NUMBER WHICH MAY BE VARIED BY ONE UNIT IN A FIRST ARITHMETIC SENSE FOR EACH PULSE APPLIED TO ONE OF SAID TWO INPUT LEADS AND BY ONE UNIT IN A DIFFERENT ARITHMETIC SENSE FROM SAID FIRST SENSE FOR EACH PULSE APPLIED TO THE OTHER ONE OF SAID TWO INPUT LEADS; DIGITAL TO ANALOG CONVERSION MEANS RESPONSIVE TO THE OUTPUT OF SAID COUNTER FOR GENERATING AN ANALOG SIGNAL OF MANGNITUDE COMMENSURATE WITH THE NUMBER OF UNITS DIFFERENCE BETWEEN SAID REFERENCE NUNBER AND THE ACTUAL NUMBER REGISTERED IN SAID COUNTER OVER AT LEAST A PORTION OF THE RANGE OF OPERATION OF SAID COUNTER; AND INPUT LOGIC MEANS COUPLED TO SAID TWO INPUT LEADS OF SAID COUNTER AND TO SAID CONVERSION MEANS FOR PRECLUDING THE SIMULTANEOUS APPLICATION OF PULSES ON SAID TWO COUNTER INPUT LEADS AND FOR DEFINING BY VIRTUE FO ITS LOGIC STATE, DURING A PORTION F ITS OPERATION, TO WHICH OF SAID INPUTS OF SAID COUNTER A PULSE WAS LAST APPLIED.
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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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |