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Patent US3281591A successfully refreshed from Google Patents.
US3281591A
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Induction wireless communicating system
Assignee: Individual
•
Filing: 1962-03-07
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Granted: 1966-10-25
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Expires: 1982-03-07
Abstract
No abstract record available.
Inventors
- 👤 Takeya Takeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:37
CPC Classifications
B; B61; B61L; B61L3/00; B61L3/16; B61L3/22; B61L3/225; B61L25/00; B61L25/02; B61L25/04; H; H01; H01Q; H01Q13/00; H01Q13/20; H04; H04B; H04B5/00; H04B5/20; H04B5/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN INDUCTION COMMUNICATION SYSTEM COMPRISING A TRANSMISSION LINE LAID SUBSTANTIALLY PARALLEL TO A RAIL OR TRACK, SAID TRANSMISSION LINE COMPRISING A TRANSMISSION PATH COMPRISING A CYLINDRICAL WAVEGUIDE HAVING A PLURALITY OF MAIN SLITS PERFORATED THROUGH ITS WALL AT SUBSTANTIALLY EQUAL SPACING FROM EACH OTHER, A COUPLING PORTION PERTAINING TO EACH MAIN SLIT INCLUDING A SECOND WAVEGUIDE EXTENDING SUBSTANTIALLY AT A RIGHT ANGLE TO SAID TRANSMISSION PATH, SAID COUPLING PORTION COMPRISING A BASE PORTION SECURED TO SAID CYLINDER WAVEGUIDE AROUND THE RESPECTIVE SAID MAIN SLIT, EACH COUPLING PORTION ALOS COMPRISING A RADIATING PORTION FORMED BY A THIRD WAVEGUIDE PARALLEL TO SAID CYLINDRICAL WAVEGUIDE, SAID THIRD WAVEGUIDE BEING CONNECTED WITH SAID COUPLING PORTION, AND A PLURALITY OF SUBSTANTIALLY EQUALLY SPACED SUB-SLITS IN EACH SAID THIRD WAVEGUIDE BEING DESIGNED TO HAVE EQUAL PHASE SPEEDS TO OBTAIN A CONSTANT RADIATING FIELD ALONG THE TRACK OR RAIL BY ELIMINATING DISCONTINUITY OR TURBULENCE OF RADIATED MICROWAVE ENERGY.
Claim 2
Dependent Claim
151 words
AN INDUCTION COMMUNICATION SYSTEM COMPRISING A TRANSMISSION LINE LAID SUBSTANTIALLY PARALLEL TO A RAIL OR TRACK, SAID TRANSMISSION LINE COMPRISING A TRANSMISSION PATH COMPRISING A CYLINDRICAL WAVEGUIDE HAVING A PLURALITY OF MAIN SLITS PERFORATED THROUGH ITS WALL AT SUBSTANTIALLY EQUAL SPACING FROM EACH OTHER, A COUPLING PORTION PERTAINING TO EACH MAIN SLIT INCLUDING A SECOND WAVEGUIDE EXTENDING SUBSTANTIALLY AT A RIGHT ANGLE TO SAID TRANSMISSION PATH, SAID COUPLING PORTION COMPRISING A BASE PORTION SECURED TO SAID CYLINDER WAVEGUIDE AROUND THE RESPECTIVE SAID MAIN SLIT, EACH COUPLING PORTION ALOS COMPRISING A RADIATING PORTION FORMED BY A THIRD WAVEGUIDE PARALLEL TO SAID CYLINDRICAL WAVEGUIDE, SAID THIRD WAVEGUIDE BEING CONNECTED WITH SAID COUPLING PORTION, AND A PLURALITY OF SUBSTANTIALLY EQUALLY SPACED SUB-SLITS IN EACH SAID THIRD WAVEGUIDE BEING DESIGNED TO HAVE EQUAL PHASE SPEEDS TO OBTAIN A CONSTANT RADIATING FIELD ALONG THE TRACK OR RAIL BY ELIMINATING DISCONTINUITY OR TURBULENCE OF RADIATED MICROWAVE ENERGY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |