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US3085199A
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Tunable microwave cavity resonator with calibrated dial
Assignee: Varian Medical Systems Inc
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Filing: 1961-01-16
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Granted: 1963-04-09
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Expires: 1981-01-16
Abstract
No abstract record available.
Inventors
- 👤 David W Foss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:05
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
137 words
A MICROWAVE CAVITY RESONATOR TUNABLE OVER A PREDETERMINED FREQUENCY BAND AND DEFINING A HOLLOW CYLINDRICAL CAVITY WITH A MOVABLE TUNING PLUNGER DISPOSED THEREIN ALONG THE CYLINDER AXIS, ACTUATING MEANS DISPOSED PERPENDICULARLY TO THE CYLINDER AXIS AND COOPERATING WITH SAID PLUNGER TO AXIALLY MOVE SAME, SAID ACTUATING MEANS COMPRISING A GEAR SYSTEM ACTIVATING A MOVABLE FRAME MEMBER CONTROLLED BY A ROTATABLE MEMBER TO THEREBY ADVANCE SAID FRAME MEMBER HORIZONTALLY A PREDETERMINED DIMENSION FOR EACH INCREMENT OF ROTATION, ROTATABLE FREQUENCY INDICATING MEANS SECURED TO SAID ROTATABLE MEMBER AND DISPOSED ABOVE SAID FRAME MEMBER, SAID INDICATING MEANS COMPRISING A DIAL MEMBER HAVING INSCRIBED THEREON A PLURALITY OF SUBSTANTIALLY EQUALLY SPACED MARKINGS FORMING A HELICAL ARRAY, SAID FRAME MEMBER MOVING PROGRESSIVELY IN A HORIZONTAL DIRECTION AS SAID DIAL MEMBER ROTATES TO THEREBY INDICATE THE FREQUENCY AT WHICH THE RESONATOR IS RESONANT.
Claim 2
Dependent Claim
137 words
A MICROWAVE CAVITY RESONATOR TUNABLE OVER A PREDETERMINED FREQUENCY BAND AND DEFINING A HOLLOW CYLINDRICAL CAVITY WITH A MOVABLE TUNING PLUNGER DISPOSED THEREIN ALONG THE CYLINDER AXIS, ACTUATING MEANS DISPOSED PERPENDICULARLY TO THE CYLINDER AXIS AND COOPERATING WITH SAID PLUNGER TO AXIALLY MOVE SAME, SAID ACTUATING MEANS COMPRISING A GEAR SYSTEM ACTIVATING A MOVABLE FRAME MEMBER CONTROLLED BY A ROTATABLE MEMBER TO THEREBY ADVANCE SAID FRAME MEMBER HORIZONTALLY A PREDETERMINED DIMENSION FOR EACH INCREMENT OF ROTATION, ROTATABLE FREQUENCY INDICATING MEANS SECURED TO SAID ROTATABLE MEMBER AND DISPOSED ABOVE SAID FRAME MEMBER, SAID INDICATING MEANS COMPRISING A DIAL MEMBER HAVING INSCRIBED THEREON A PLURALITY OF SUBSTANTIALLY EQUALLY SPACED MARKINGS FORMING A HELICAL ARRAY, SAID FRAME MEMBER MOVING PROGRESSIVELY IN A HORIZONTAL DIRECTION AS SAID DIAL MEMBER ROTATES TO THEREBY INDICATE THE FREQUENCY AT WHICH THE RESONATOR IS RESONANT.
Claim 3
Dependent Claim
141 words
A TUNING MECHANISM FOR ELECTRONIC APPARATUS OF THE TYPE EMPLOYING A NON-LINEAR RELATIONSHIP BETWEEN A MOVABLE PISTON MEMBER AND A FIXED COMPONENT WITHIN A RESONANT CAVITY TO THEREBY TUNE THE APPARATUS TO A SELECTED FREQUENCY, SAID TUNING MECHANISM COMPRISING ROTATABLE SCREW MEMBER ACTIVATING A HORIZONTAL FRAME MEMBER THROUGH A SYSTEM OF MESHING GEARS, SAID ROTATABLE MEMBER SUPPORTING A ROTATABLE PLANAR DIAL MEMBER ABOVE SAID FRAME MEMBER, A PLURALITY OF SUBSTANTIALLY EQUALLY SPACED FREQUENCY MARKINGS DEFINED ON SAID DIAL MEMBER IN A HELICAL ARRAY, THE ARRAY COMMENCING ADJACENT TO THE CENTER OF THE DIAL MEMBER INDICATING THE LOWER FREQUENCY LIMIT AND PROGRESSING OUTWARDLY TO THE UPPER FREQUENCY LIMIT, SAID FRAME MEMBER ADVANCING IN A STRAIGHT LINE A PREDETERMINED DIMENSION FOR EACH INCREMENT OF ROTATION OF SAID ROTATABLE DIAL MEMBER AND HAVING MEANS FOR INDICATING THE FREQUENCY AT WHICH THE APPARATUS IS RESONANT.
Claim 4
Dependent Claim
141 words
A TUNING MECHANISM FOR ELECTRONIC APPARATUS OF THE TYPE EMPLOYING A NON-LINEAR RELATIONSHIP BETWEEN A MOVABLE PISTON MEMBER AND A FIXED COMPONENT WITHIN A RESONANT CAVITY TO THEREBY TUNE THE APPARATUS TO A SELECTED FREQUENCY, SAID TUNING MECHANISM COMPRISING ROTATABLE SCREW MEMBER ACTIVATING A HORIZONTAL FRAME MEMBER THROUGH A SYSTEM OF MESHING GEARS, SAID ROTATABLE MEMBER SUPPORTING A ROTATABLE PLANAR DIAL MEMBER ABOVE SAID FRAME MEMBER, A PLURALITY OF SUBSTANTIALLY EQUALLY SPACED FREQUENCY MARKINGS DEFINED ON SAID DIAL MEMBER IN A HELICAL ARRAY, THE ARRAY COMMENCING ADJACENT TO THE CENTER OF THE DIAL MEMBER INDICATING THE LOWER FREQUENCY LIMIT AND PROGRESSING OUTWARDLY TO THE UPPER FREQUENCY LIMIT, SAID FRAME MEMBER ADVANCING IN A STRAIGHT LINE A PREDETERMINED DIMENSION FOR EACH INCREMENT OF ROTATION OF SAID ROTATABLE DIAL MEMBER AND HAVING MEANS FOR INDICATING THE FREQUENCY AT WHICH THE APPARATUS IS RESONANT.
References Cited (Backward Citations)
US2373168A
Cited
US2496454A
Cited
US2517605A
Cited
US2572232A
Cited
US2849691A
Cited
US2919419A
Cited
US2912957A
Cited
US2970562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |