US3281591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction wireless communicating system
Assignee: Individual
•
Filing: 1962-03-07
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Granted: 1966-10-25
•
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 21:16
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.
References Cited (Backward Citations)
US2641688A
Cited
US2636113A
Cited
US2624003A
Cited
US2702342A
Cited
US2618744A
Cited
US2580155A
Cited
US2765401A
Cited
US2993205A
Cited
US2961658A
Cited
US3078463A
Cited
US3032762A
Cited
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 |