US3074035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunable filter
Assignee: ARF Products Inc
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Filing: 1958-04-18
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Granted: 1963-01-15
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Expires: 1978-04-18
Abstract
No abstract record available.
Inventors
- 👤 John J Pakan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:27
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/201; H01P1/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A TUNABLE FILTER COMPRISING A PLURALITY OF COAXIAL RESONATORS INCLUDING MEANS HAVING A GENERALLY FLAT WALL DEFINING A CAVITY WITH ELECTRICALLY CONDUCTING SURFACES, SAID CAVITY HAVING AN AXIAL CONDUCTOR DISPOSED THEREIN AND CONNECTED TO THE SURFACE OF THE CAVITY AT ONE END, THE WALL OF SAID CAVITY DEFINING MEANS HAVING A GROOVE THEREIN EXTENDING FROM AN OPENING IN THE CAVITY DISPOSED ADJACENT TO THE JUNCTION OF THE ROD AND CAVITY SURFACE, MEANS FOR MOUNTING THE RESONATORS IN ABUTTING RELATIONSHIP WITH THE FLAT WALL OF ONE RESONATOR ABUTTING THE FLAT WALL OF THE OTHER, SAID MEANS MOUNTING THE GROOVES IN CONFRONTING RELATIONSHIP AND ELECTRICALLY COUPLING THE CAVITIES THROUGH THE OPENINGSS, AND ONE RESONATOR BEING TRANSLATABLE ALONG THE AXIS OF THE GROOVES RELATIVE TO THE OTHER RESONATOR.
Claim 2
Dependent Claim
125 words
A TUNABLE FILTER COMPRISING A PLURALITY OF COAXIAL RESONATORS INCLUDING MEANS HAVING A GENERALLY FLAT WALL DEFINING A CAVITY WITH ELECTRICALLY CONDUCTING SURFACES, SAID CAVITY HAVING AN AXIAL CONDUCTOR DISPOSED THEREIN AND CONNECTED TO THE SURFACE OF THE CAVITY AT ONE END, THE WALL OF SAID CAVITY DEFINING MEANS HAVING A GROOVE THEREIN EXTENDING FROM AN OPENING IN THE CAVITY DISPOSED ADJACENT TO THE JUNCTION OF THE ROD AND CAVITY SURFACE, MEANS FOR MOUNTING THE RESONATORS IN ABUTTING RELATIONSHIP WITH THE FLAT WALL OF ONE RESONATOR ABUTTING THE FLAT WALL OF THE OTHER, SAID MEANS MOUNTING THE GROOVES IN CONFRONTING RELATIONSHIP AND ELECTRICALLY COUPLING THE CAVITIES THROUGH THE OPENINGSS, AND ONE RESONATOR BEING TRANSLATABLE ALONG THE AXIS OF THE GROOVES RELATIVE TO THE OTHER RESONATOR.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |