US3231824A
Expired / Lapsed
US
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Pulse counter detector
Assignee: Ampex Corp
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Filing: 1962-08-02
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Granted: 1966-01-25
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Expires: 1982-08-02
Abstract
No abstract record available.
Inventors
- 👤 Paul E Drapkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:04
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/153; H03K5/1536; H03D; H03D3/00; H03D3/02; H03D3/04; H03K3/00; H03K3/02; H03K3/33
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
A CIRCUIT FOR CONVERTING AN INPUT WAVEFORM INTO A FIXED DURATION PULSE OUTPUT INCLUDING: A PAIR OF ACTIVE SWITCHING ELEMENTS HAVING CONTROL ELECTRODES AND OUTPUT ELECTRODES AND HAVING CHARGE STORAGE TIMES SHORTER THAN THE PERIOD OF THE INPUT WAVEFORM, MEANS COUPLED TO THE CONTROL ELECTRODES OF THE ACTIVE SWITCHING ELEMENTS FOR PRODUCING SHARP SPIKE PULSES IN RESPONSE TO THE INSTANTANEOUS FREQUENCY CHARACTERISTICS OF THE INPUT WAVEFORM, THE SHARP SPIKE PULSES BEING OF SUCH POLARITY AND AMPLITUDE AS TO CAUSE THE ACTIVE SWITCHING ELEMENTS TO GO THROUGH ALTERNATE SATURATION-DESATURATION CYCLES AND THUS TO FORM PULSES AT A JUNCTION POINT OF THEIR OUTPUT ELECTRODES HAVING FIXED DURATIONS EQUAL TO SAID CHARGE STORAGE TIMES.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |