US3308307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo amplifier utilizing composite waveform of sawtooth with high frequency signal imposed thereon
Assignee: Individual
•
Filing: 1963-08-14
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Granted: 1967-03-07
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Expires: 1983-08-14
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Moritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:19
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/155; H02M7/1555
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
A CIRCUIT FOR CONTROLLING THE FIRING OF A GATED ELECTRONIC VALVE OF THE TYPE WHICH FIRES AND BECOMES FULLY CONDUCTIVE UPON RECEIVING A GATING SIGNAL COMPRISING: MEANS TO PRODUCE A COMPOSITE WAVEFORM HAVING GENERALLY A SAWTOOTH SHAPE OF A FIRST CONSTANT FREQUENCY WITH PULSES AT A SECOND HIGHER FREQUENCY MODULATING THE AMPLITUDE OF THE SAWTOOTH WAVE SHAPE, MEANS TO VARY THE AMPLITUDE OF SAID PULSES IN ACCORDANCE WITH AN APPLIED INPUT SIGNAL AND BISTABLE CIRCUIT MEANS CONNECTED TO RECEIVE SAID COMPOSITE WAVEFORM AND OPERABLE TO APPLY A GATING SIGNAL TO SAID GATED ELECTRONIC VALVE WHEN SAID COMPOSITE WAVEFORM REACHES A PREDETERMINED AMPLITUDE.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |