US3278765A
Expired / Lapsed
US
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Apparatus for shifting the phase of low frequency oscillations
Assignee: Servomex Controls Ltd
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Filing: 1963-04-04
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Granted: 1966-10-11
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Expires: 1983-04-04
Abstract
No abstract record available.
Inventors
- 👤 Mudie Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:27
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/16; H03H11/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
APPARATUS FOR SHIFTING THE PHASE OF A FIRST LOW-FREQUENCY TRIANGULAR WAVE COMPRISING RECTIFYING AND ADDING MEANS FORMING A FIRST SERIES OF CONTINUOUS PULSES IN ONE SENSE FROM THE FIRST TRIANGULAR WAVE, RECTIFYING AND ADDING MEANS FORMING A SECOND SERIES OF CONTINUOUS PULSES IN A SENSE OPPOSITE TO THE FIRST MENTIONED SENSE AND IN PHASE WITH THE FIRST SERIES OF CONTINUOUS PULSES FROM THE FIRST TRIANGULAR WAVE, AND MEANS HAVING THE SAME CYCLIC PERIODICITY AS THE FIRST TRIANGULAR WAVE FOR ADDING A SQUARE WAVE TO THE FIRST AND SECOND SERIES OF CONTINUOUS PULSES ALTERNATELY IN SUCCESSIVE HALF-CYCLES TO PRODUCE A SECOND TRIANGULAR WAVE SHIFTED IN PHASE BY 90* RELATIVE TO THE FIRST TRIANGULAR WAVE.
Claim 2
Dependent Claim
113 words
APPARATUS FOR SHIFTING THE PHASE OF A FIRST LOW-FREQUENCY TRIANGULAR WAVE COMPRISING RECTIFYING AND ADDING MEANS FORMING A FIRST SERIES OF CONTINUOUS PULSES IN ONE SENSE FROM THE FIRST TRIANGULAR WAVE, RECTIFYING AND ADDING MEANS FORMING A SECOND SERIES OF CONTINUOUS PULSES IN A SENSE OPPOSITE TO THE FIRST MENTIONED SENSE AND IN PHASE WITH THE FIRST SERIES OF CONTINUOUS PULSES FROM THE FIRST TRIANGULAR WAVE, AND MEANS HAVING THE SAME CYCLIC PERIODICITY AS THE FIRST TRIANGULAR WAVE FOR ADDING A SQUARE WAVE TO THE FIRST AND SECOND SERIES OF CONTINUOUS PULSES ALTERNATELY IN SUCCESSIVE HALF-CYCLES TO PRODUCE A SECOND TRIANGULAR WAVE SHIFTED IN PHASE BY 90* RELATIVE TO THE FIRST TRIANGULAR WAVE.
References Cited (Backward Citations)
US3049660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |