US3159797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atomic frequency standard
Assignee: Varian Medical Systems Inc
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Filing: 1961-06-12
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Granted: 1964-12-01
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Expires: 1981-06-12
Abstract
No abstract record available.
Inventors
- 👤 Richard M Whitehorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:56
CPC Classifications
G; G01; G01N; G01N24/00; G01N24/006; H; H03; H03L; H03L7/00; H03L7/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
91 words
A FREQUENCY STABILIZATION APPARATUS INCLUDING A LIGHT SOURCE, A LIGHT ABSORPTION CELL ENCLOSED WITHIN A CAVITY RESONATOR, A LIGHT INTENSITY MEANS FOR DETECTING THE INTENSITY OF LIGHT AFTER PASSING THROUGH SAID CELL, AN OSCILLATOR FOR GENERATING A RADIO FREQUENCY, WHICH INDUCES ATOMIC RESONANCE IN SAID CELL, A MODULATOR MEANS FOR PHASE MODULATING SAID RADIO FREQUENCY AS A SQUARE WAVE FUNCTION, AND A PHASE DETECTOR MEANS RESPONSIVE TO SAID LIGHT INTENSITY MEANS AND TO SAID MODULATOR MEANS FOR TUNING SAID OSCILLATOR RELATIVE TO THE LIGHT INTENSITY DETECTED BY SAID LIGHT INTENSITY MEANS.
Claim 2
Dependent Claim
91 words
A FREQUENCY STABILIZATION APPARATUS INCLUDING A LIGHT SOURCE, A LIGHT ABSORPTION CELL ENCLOSED WITHIN A CAVITY RESONATOR, A LIGHT INTENSITY MEANS FOR DETECTING THE INTENSITY OF LIGHT AFTER PASSING THROUGH SAID CELL, AN OSCILLATOR FOR GENERATING A RADIO FREQUENCY, WHICH INDUCES ATOMIC RESONANCE IN SAID CELL, A MODULATOR MEANS FOR PHASE MODULATING SAID RADIO FREQUENCY AS A SQUARE WAVE FUNCTION, AND A PHASE DETECTOR MEANS RESPONSIVE TO SAID LIGHT INTENSITY MEANS AND TO SAID MODULATOR MEANS FOR TUNING SAID OSCILLATOR RELATIVE TO THE LIGHT INTENSITY DETECTED BY SAID LIGHT INTENSITY MEANS.
Claim 3
Dependent Claim
56 words
A FREQUENCY STABILIZATION APPARATUS INCLUDING A LIGHT SOURCE FOR DIRECTING LIGHT INTO AN ABSORPTION CELL DISPOSED WITHIN A CAVITY RESONATOR, SAID CAVITY RESONATOR COMPRISING A CYLINDRICAL CHAMBER HAVING AXIALLY ALIGNED APERTURES, AND MEANS FOR FLATTENING THE PEAK OF THE HALF SINUSOIDAL WAVE SHAPE OF THE MAGNETIC FIELD WHEN SAID RESONATOR IS OSCILLATING IN THE TE011 MODE.
Claim 4
Dependent Claim
56 words
A FREQUENCY STABILIZATION APPARATUS INCLUDING A LIGHT SOURCE FOR DIRECTING LIGHT INTO AN ABSORPTION CELL DISPOSED WITHIN A CAVITY RESONATOR, SAID CAVITY RESONATOR COMPRISING A CYLINDRICAL CHAMBER HAVING AXIALLY ALIGNED APERTURES, AND MEANS FOR FLATTENING THE PEAK OF THE HALF SINUSOIDAL WAVE SHAPE OF THE MAGNETIC FIELD WHEN SAID RESONATOR IS OSCILLATING IN THE TE011 MODE.
Claim 5
Dependent Claim
96 words
A FREQUENCY STABILIZATION APPARATUS INCLUDING A LIGHT SOURCE DIRECTING LIGHT THROUGH AN ABSORPTION CELL WHICH IS AXIALLY DISPOSED WITHIN A CYLINDRICAL CAVITY RESONATOR, MEANS FOR GENERATING AN EXTERNAL STEADY MAGNETIC FIELD DIRECTED AXIALLY THROUGH SAID ABSORPTION CELL, AND MEANS FOR FORMING AND VARYING THE FREQUENCY OF AN ALTERNATING MAGNETIC FIELD DIRECTED TRANSVERSELY TO SAID EXTERNAL MAGNETIC FIELD FOR INCLUDING ZEEMAN TRANSITIONS IN SAID ABSORPTION CELL, SAID MEANS COMPRISING AN ELONGATED MAGNETIC COIL DISPOSED AROUND THE EXTERIOR SURFACE OF SAID CELL WITH THE LONG WIRES OF SAID COIL DISPOSED PARALLEL TO THE AXIS OF SAID CAVITY RESONATOR.
Claim 6
Dependent Claim
96 words
A FREQUENCY STABILIZATION APPARATUS INCLUDING A LIGHT SOURCE DIRECTING LIGHT THROUGH AN ABSORPTION CELL WHICH IS AXIALLY DISPOSED WITHIN A CYLINDRICAL CAVITY RESONATOR, MEANS FOR GENERATING AN EXTERNAL STEADY MAGNETIC FIELD DIRECTED AXIALLY THROUGH SAID ABSORPTION CELL, AND MEANS FOR FORMING AND VARYING THE FREQUENCY OF AN ALTERNATING MAGNETIC FIELD DIRECTED TRANSVERSELY TO SAID EXTERNAL MAGNETIC FIELD FOR INCLUDING ZEEMAN TRANSITIONS IN SAID ABSORPTION CELL, SAID MEANS COMPRISING AN ELONGATED MAGNETIC COIL DISPOSED AROUND THE EXTERIOR SURFACE OF SAID CELL WITH THE LONG WIRES OF SAID COIL DISPOSED PARALLEL TO THE AXIS OF SAID CAVITY RESONATOR.
References Cited (Backward Citations)
US2951992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |