US3364438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic search sweep for atomic frequency standard
Assignee: Varian Medical Systems Inc
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Filing: 1964-04-24
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Granted: 1968-01-16
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Expires: 1984-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert J Rorden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:18
CPC Classifications
H; H03; H03B; H03B23/00; H01; H01S; H01S1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A SYSTEM FOR STABILIZING THE FREQUENCY OF A VARIABLE FREQUENCY OSCILLATOR COMPRISING A PASSIVE ATOMIC RESONATOR, A SOURCE OF REFERENCE FREQUENCY AND PHASE, MEANS RESPONSIVE TO SAID OSCILLATOR AND SAID SOURCE FOR APPLYING MICROWAVE ENERGY FREQUENCY MODULATED BY SAID SOURCE TO SAID RESONATOR, MEANS FOR DETECTING OSCILLATIONS DERIVING FROM SAID RESONATOR, MEANS RESPONSIVE TO SAID OSCILLATIONS FOR DERIVING A FIRST SIGNAL INDICATIVE OF THE INPHASE AND QUADRATURE FUNDAMENTAL COMPONENTS OF SAID OSCILLATIONS RELATIVE TO THE REFERENCE FREQUENCY AND PHASE AND A SECOND SIGNAL INDICATIVE OF THE SECOND HARMONIC COMPONENTS OF SAID OSCILLATIONS RELATIVE TO SAID REFERENCE FREQUENCY, MEANS FOR COMBINING SAID FIRST AND SECOND SIGNALS TO DERIVE A CONTROL SIGNAL, MEANS FOR DERIVING A FIRST CONTROL VOLTAGE FOR SWEEPING THE FREQUENCY OF THE OSCILLATOR OVER A WIDE RANGE, MEANS RESPONSIVE TO SAID OSCILLATIONS FOR DERIVING A SECOND CONTROL VOLTAGE INDICATIVE OF THE IN-PHASE COMPONENT OF SAID OSCILLATIONS, AND MEANS RESPONSIVE TO SAID CONTROL SIGNAL FOR SELECTIVELY APPLYING THE FIRST CONTROL VOLTAGE OR THE SECOND CONTROL VOLTAGE TO SAID OSCILLATOR.
Claim 2
Independent Claim
169 words
A SYSTEM FOR STABILIZING THE FREQUENCY OF A VARIABLE FREQUENCY OSCILLATOR COMPRISING A PASSIVE ATOMIC RESONATOR, A SOURCE OF REFERENCE FREQUENCY AND PHASE, MEANS RESPONSIVE TO SAID OSCILLATOR AND SAID SOURCE FOR APPLYING MICROWAVE ENERGY FREQUENCY MODULATED BY SAID SOURCE TO SAID RESONATOR, MEANS FOR DETECTING OSCILLATIONS DERIVING FROM SAID RESONATOR, MEANS RESPONSIVE TO SAID OSCILLATIONS FOR DERIVING A FIRST SIGNAL INDICATIVE OF THE INPHASE AND QUADRATURE FUNDAMENTAL COMPONENTS OF SAID OSCILLATIONS RELATIVE TO THE REFERENCE FREQUENCY AND PHASE AND A SECOND SIGNAL INDICATIVE OF THE SECOND HARMONIC COMPONENTS OF SAID OSCILLATIONS RELATIVE TO SAID REFERENCE FREQUENCY, MEANS FOR COMBINING SAID FIRST AND SECOND SIGNALS TO DERIVE A CONTROL SIGNAL, MEANS FOR DERIVING A FIRST CONTROL VOLTAGE FOR SWEEPING THE FREQUENCY OF THE OSCILLATOR OVER A WIDE RANGE, MEANS RESPONSIVE TO SAID OSCILLATIONS FOR DERIVING A SECOND CONTROL VOLTAGE INDICATIVE OF THE IN-PHASE COMPONENT OF SAID OSCILLATIONS, AND MEANS RESPONSIVE TO SAID CONTROL SIGNAL FOR SELECTIVELY APPLYING THE FIRST CONTROL VOLTAGE OR THE SECOND CONTROL VOLTAGE TO SAID OSCILLATOR.
References Cited (Backward Citations)
US3206693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |