US3388352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waveguide
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1966-02-25
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Granted: 1968-06-11
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Expires: 1986-02-25
Abstract
No abstract record available.
Inventors
- 👤 Ramonat Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:44
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/04; H01P5/08; H01P5/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A BROADBAND WAVEGUIDE TRANSITION MEMBER HAVING LOW REFLECTION, FOR THE CONNECTION OF A CORRUGATED WAVEGUIDE HAVING A SUBSTANTIALLY ELLIPTICAL CROSS-SECTION TO A RECTANGULAR WAVEGUIDE, COMPRISING IN COMBINATION: A RECTANGULAR WAVEGUIDE FOR DIRECTLY ABUTING A CORRUGATED ELLIPTICAL WAVEGUIDE, SAID RECTANGULAR WAVEGUIDE FORMING THE TRANSITION MEMBER AND INCLUDING TWO PAIRS OF SPACED PARALLEL INNER SURFACES ARRANGED TRANSVERSELY TO EACH OTHER WITH ONE OF SAID PAIR OF SURFACES BEING SPACED MORE CLOSELY THAN THE OTHER PAIR, EACH OF SAID CLOSELY SPACED SURFACES BEING PROVIDED WITH AN AXIALLY SYMMETRICAL TAPERED RECESS, SAID TAPERED RECESSES ENLARGING IN THE DIRECTION OF THE ELLIPTICAL WAVEGUIDE AND EXTENDING 3/4$HR WHEREIN $HR IS THE WAVELENGTH OF THE RECTANGULAR WAVEGUIDE, AND SAID TAPERED RECESSES BEING PROVIDED WITH A CONSTANT INCLINATION ANGLE WHICH LIES BETWEEN 2* AND 12*;
Claim 2
Dependent Claim
127 words
A BROADBAND WAVEGUIDE TRANSITION MEMBER HAVING LOW REFLECTION, FOR THE CONNECTION OF A CORRUGATED WAVEGUIDE HAVING A SUBSTANTIALLY ELLIPTICAL CROSS-SECTION TO A RECTANGULAR WAVEGUIDE, COMPRISING IN COMBINATION: A RECTANGULAR WAVEGUIDE FOR DIRECTLY ABUTING A CORRUGATED ELLIPTICAL WAVEGUIDE, SAID RECTANGULAR WAVEGUIDE FORMING THE TRANSITION MEMBER AND INCLUDING TWO PAIRS OF SPACED PARALLEL INNER SURFACES ARRANGED TRANSVERSELY TO EACH OTHER WITH ONE OF SAID PAIR OF SURFACES BEING SPACED MORE CLOSELY THAN THE OTHER PAIR, EACH OF SAID CLOSELY SPACED SURFACES BEING PROVIDED WITH AN AXIALLY SYMMETRICAL TAPERED RECESS, SAID TAPERED RECESSES ENLARGING IN THE DIRECTION OF THE ELLIPTICAL WAVEGUIDE AND EXTENDING 3/4$HR WHEREIN $HR IS THE WAVELENGTH OF THE RECTANGULAR WAVEGUIDE, AND SAID TAPERED RECESSES BEING PROVIDED WITH A CONSTANT INCLINATION ANGLE WHICH LIES BETWEEN 2* AND 12*;
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) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |