Patent US4952419A successfully refreshed from Google Patents.
US3183443A
Expired / Lapsed
US
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Transmission system with antenna means for coupling to an insulated conductror
Assignee: Charbonnages de France CDF
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Filing: 1962-09-11
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Granted: 1965-05-11
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Expires: 1982-09-11
Abstract
No abstract record available.
Inventors
- 👤 Lefevre Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:08
CPC Classifications
H; H04; H04B; H04B5/00; H04B5/20; H04B5/22; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/273; H01Q1/276
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
COUPLING APPARATUS FOR THE TRANSMISSION OR RECEPTION OF HIGH-FREQUENCY SIGNALS THROUGH CAPACITIVE COUPLING ON AN INSULATED CONDUCTOR EXTENDING AT LEAST ADJACENT TO THE POINTS OF TRANSMISSIONS AND RECEPTION COMPRISING: A COUPLER FOR CAPACITIVE COUPLING WITH SAID INSULATED CONDUCTOR; AND TRANSMITTING OR RECEIVING APPARATUS OPERATIVELY CONNECTED TO SAID COUPLER; SAID COUPLER INCLUDING A HELMET FOR WEAR BY AN OPERATOR TRANSMITTING OR RECEIVING THE SIGNALS HAVING AN INSULATED HEADGEAR FITTED INSIDE SAID HELMET, A METALLIZED PART OF SAID HELMET HAVING A SURFACE OF SUBSTANTIALLY CONSTANT ELECTRICAL VALUE IN ANY ORIENTATION IN RELATION TO SAID INSULATED CONDUCTOR A METALLIZED PORTION HAVING CONTACT WITH THE EARTH TERMINAL OF THE APPARATUS FOR TRANSMISSION OR RECEPTION OF HIGH-FREQUENCY SIGNALS AND CONTACT WITH THE BODY OF THE OPERATOR WEARING SAID HELMET WHEREBY THE EARTH RETURN IS AFFECTED THROUGH THE INTERMEDIARY OF THE BODY OF THE OPERATOR, A CASING WORN BY THE OPERATOR, AND CONTROL MEANS ON SAID CASING FOR SELECTING SIGNALS FOR TRANSMISSION THROUGH SAID COUPLER TO THE INSULATED CONDUCTOR.
Claim 2
Dependent Claim
163 words
COUPLING APPARATUS FOR THE TRANSMISSION OR RECEPTION OF HIGH-FREQUENCY SIGNALS THROUGH CAPACITIVE COUPLING ON AN INSULATED CONDUCTOR EXTENDING AT LEAST ADJACENT TO THE POINTS OF TRANSMISSIONS AND RECEPTION COMPRISING: A COUPLER FOR CAPACITIVE COUPLING WITH SAID INSULATED CONDUCTOR; AND TRANSMITTING OR RECEIVING APPARATUS OPERATIVELY CONNECTED TO SAID COUPLER; SAID COUPLER INCLUDING A HELMET FOR WEAR BY AN OPERATOR TRANSMITTING OR RECEIVING THE SIGNALS HAVING AN INSULATED HEADGEAR FITTED INSIDE SAID HELMET, A METALLIZED PART OF SAID HELMET HAVING A SURFACE OF SUBSTANTIALLY CONSTANT ELECTRICAL VALUE IN ANY ORIENTATION IN RELATION TO SAID INSULATED CONDUCTOR A METALLIZED PORTION HAVING CONTACT WITH THE EARTH TERMINAL OF THE APPARATUS FOR TRANSMISSION OR RECEPTION OF HIGH-FREQUENCY SIGNALS AND CONTACT WITH THE BODY OF THE OPERATOR WEARING SAID HELMET WHEREBY THE EARTH RETURN IS AFFECTED THROUGH THE INTERMEDIARY OF THE BODY OF THE OPERATOR, A CASING WORN BY THE OPERATOR, AND CONTROL MEANS ON SAID CASING FOR SELECTING SIGNALS FOR TRANSMISSION THROUGH SAID COUPLER TO THE INSULATED CONDUCTOR.
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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |