Patent US4369104A successfully refreshed from Google Patents.
US3376524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-mode broadband resonant cavity
Assignee: Unisys Corp
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Filing: 1964-07-13
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Granted: 1968-04-02
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Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Wang Chao Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:18
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/18; H01J23/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A BROADBAND RESONANT CAVITY TUBE COMPRISING, A HOLLOW CONDUCTIVE CAVITY MEMBER HAVING FIRST AND SECOND END WALLS, FIRST AND SECOND ALIGNED REENTRANT NIBS ON THE RESPECTIVE END WALLS OF SAID CAVITY AND FORMING A GAP THEREBETWEEN SAID CAVITY BEING ADAPTED TO SUPPORT STANDING ELECTROMAGNETIC WAVES AT A FIRST FREQUENCY IN A FIRST CAVITY MODE CHARACTERIZED BY ELECTRIC FIELD LINES THAT EXTEND ACROSS SAID GAP BETWEEN SAID NIBS, AND SUPPORTING STANDING ELECTROMAGNETIC WAVES AT A SECOND FREQUENCY IN A SECOND CAVITY MODE CHARACTERIZED BY ELECTRIC FIELD LINES IN THE GAP THAT EXTENDS BETWEEN THE RESPECTIVE NIBS AND THE SIDE WALL OF SAID CAVITY MEMBER, AN APERTURED CONDUCTIVE CUP-SHAPED MEMBER COAXIALLY DISPOSED IN SAID GAP ADJACENT ONE OF SAID NIBS, SAID CUP-SHAPED MEMBER BEING POSITIONED IN THE REGION OF SAID GAP TO INTERSECT SUBSTANTIALLY NORMALLY THE ELECTRIC FIELD LINES OF SAID FIRST MODE.
Claim 2
Dependent Claim
141 words
A BROADBAND RESONANT CAVITY TUBE COMPRISING, A HOLLOW CONDUCTIVE CAVITY MEMBER HAVING FIRST AND SECOND END WALLS, FIRST AND SECOND ALIGNED REENTRANT NIBS ON THE RESPECTIVE END WALLS OF SAID CAVITY AND FORMING A GAP THEREBETWEEN SAID CAVITY BEING ADAPTED TO SUPPORT STANDING ELECTROMAGNETIC WAVES AT A FIRST FREQUENCY IN A FIRST CAVITY MODE CHARACTERIZED BY ELECTRIC FIELD LINES THAT EXTEND ACROSS SAID GAP BETWEEN SAID NIBS, AND SUPPORTING STANDING ELECTROMAGNETIC WAVES AT A SECOND FREQUENCY IN A SECOND CAVITY MODE CHARACTERIZED BY ELECTRIC FIELD LINES IN THE GAP THAT EXTENDS BETWEEN THE RESPECTIVE NIBS AND THE SIDE WALL OF SAID CAVITY MEMBER, AN APERTURED CONDUCTIVE CUP-SHAPED MEMBER COAXIALLY DISPOSED IN SAID GAP ADJACENT ONE OF SAID NIBS, SAID CUP-SHAPED MEMBER BEING POSITIONED IN THE REGION OF SAID GAP TO INTERSECT SUBSTANTIALLY NORMALLY THE ELECTRIC FIELD LINES OF SAID FIRST MODE.
References Cited (Backward Citations)
US2644889A
Cited
US3287673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |