US3412329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Linde Sverige AB
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Filing: 1966-04-01
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Granted: 1968-11-19
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Expires: 1986-04-01
Abstract
No abstract record available.
Inventors
- 👤 Carl-Erik Granqvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:28
CPC Classifications
G; G01; G01R; G01R23/00; G01R23/02; G01R23/10; G04; G04F; G04F10/00; G04F10/04; G06; G06F; G06F7/00; G06F7/60; G06F7/68; H; H03; H03K; H03K21/00; H03K21/02; H03K23/00; H03K23/64; H03K23/66; H03K23/667; H03L; H03L7/00; H03L7/06; H03L7/16; H03L7/18; H03L7/183
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
AN ARRANGEMENT FOR MEASURING THE FREQUENCY OF A PULSATING VOLTAGE, AND COMPRISING A FREQUENCY DIVIDING COUNTER CONNECTED TO A SOURCE OF PULSATING VOLTAGE AND PRODUCING AN OUTPUT SIGNAL, A FREQUENCY DETECTOR CONNECTED TO THE OUTPUT OF SAID DIVIDING COUNTER TO RECEIVE THE OUTPUT THEREFROM AND CONNECTED TO A REFERENCE FREQUENCY SOURCE, SAID FREQUENCY DETECTOR HAVING TWO OUTPUT CIRCUITS WITH OUTPUT PULSES BEING PRODUCED IN EITHER OF SAID TWO OUTPUT CIRCUITS WHEN SAID REFERENCE FREQUENCY DIFFERS FROM THE FREQUENCY OF THE OUTPUT SIGNAL OF SAID DIVIDING COUNTER, A FORWARD AND BACKWARD COUNTER HAVING AN INPUT CIRCUIT CONNECTED TO SAID DETECTOR OUTPUT CIRCUITS, A COINCIDENCE CIRCUIT CONNECTING SAID FORWARD AND BACKWARD COUNTER WITH SAID DIVIDING COUNTER AND HAVING AN OUTPUT, SAID COINCIDENCE CIRCUIT PRODUCING AN OUTPUT PULSE WHEN A PREDETERMINED NUMBER OF PULSES OF THE FREQUENCY OF THE PULSATING VOLTAGE HAVE BEEN SUPPLIED TO SAID DIVIDING COUNTER, CONTROL MEANS CONNECTED TO SAID OUTPUT OF SAID COINCIDENCE CIRCUIT AND SAID DIVIDING COUNTER, MEANS CONNECTED TO SAID CONTROL MEANS AND SAID DIVIDING COUNTER OUTPUT FOR PRODUCING PULSES OF A SECOND FREQUENCY HAVING A FIXED RELATION TO THE FREQUENCY OF SAID SOURCE OF PULSATING
Claim 2
Dependent Claim
189 words
AN ARRANGEMENT FOR MEASURING THE FREQUENCY OF A PULSATING VOLTAGE, AND COMPRISING A FREQUENCY DIVIDING COUNTER CONNECTED TO A SOURCE OF PULSATING VOLTAGE AND PRODUCING AN OUTPUT SIGNAL, A FREQUENCY DETECTOR CONNECTED TO THE OUTPUT OF SAID DIVIDING COUNTER TO RECEIVE THE OUTPUT THEREFROM AND CONNECTED TO A REFERENCE FREQUENCY SOURCE, SAID FREQUENCY DETECTOR HAVING TWO OUTPUT CIRCUITS WITH OUTPUT PULSES BEING PRODUCED IN EITHER OF SAID TWO OUTPUT CIRCUITS WHEN SAID REFERENCE FREQUENCY DIFFERS FROM THE FREQUENCY OF THE OUTPUT SIGNAL OF SAID DIVIDING COUNTER, A FORWARD AND BACKWARD COUNTER HAVING AN INPUT CIRCUIT CONNECTED TO SAID DETECTOR OUTPUT CIRCUITS, A COINCIDENCE CIRCUIT CONNECTING SAID FORWARD AND BACKWARD COUNTER WITH SAID DIVIDING COUNTER AND HAVING AN OUTPUT, SAID COINCIDENCE CIRCUIT PRODUCING AN OUTPUT PULSE WHEN A PREDETERMINED NUMBER OF PULSES OF THE FREQUENCY OF THE PULSATING VOLTAGE HAVE BEEN SUPPLIED TO SAID DIVIDING COUNTER, CONTROL MEANS CONNECTED TO SAID OUTPUT OF SAID COINCIDENCE CIRCUIT AND SAID DIVIDING COUNTER, MEANS CONNECTED TO SAID CONTROL MEANS AND SAID DIVIDING COUNTER OUTPUT FOR PRODUCING PULSES OF A SECOND FREQUENCY HAVING A FIXED RELATION TO THE FREQUENCY OF SAID SOURCE OF PULSATING
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |