US3267218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four-wire/two-wire converter
Assignee: International Standard Electric Corp
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Filing: 1964-09-08
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Granted: 1966-08-16
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Expires: 1984-09-08
Abstract
No abstract record available.
Inventors
- 👤 Hans Helmuth Adelaar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:08
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/54; H04B1/58; H04B1/588; H04B14/00; H04B14/02; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/047; H04J3/20; H04Q; H04Q11/00; H04Q11/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
A FOUR-WIRE/TWO-WIRE CONVERTER COMPRISING: THREE LINE-TERMINALS, ONE FOR AN INCOMING LINE OF A FOUR-WIRE LINE, ONE FOR AN OUTGOING LINE OF A FOUR-WIRE LINE AND ONE FOR A BI-DIRECTIONAL LINE; THREE GATES FOR RESPECTIVE LINE TERMINALS, EACH GATE HAVING TWO TERMINALS; MEANS CONNECTING ONE TERMINAL OF EACH GATE TO RESPECTIVE ONES OF SAID LINE TERMINALS; A REACTIVE STORAGE DEVICE; THE OTHER TERMINALS OF SAID THREE GATES BEING CONNECTED IN COMMON TO SAID STORAGE DEVICE; THREE NON-COINCIDENT TIME CHANNELS FOR RESPECTIVE ONES OF SAID GATES; AND MEANS CONNECTING EACH OF SAID TIME CHANNELS TO ITS RESPECTIVE GATE FOR CYCLICALLY UNBLOCKING SAID GATES DURING SAID NON-COINCIDENT TIME INTERVALS WHEREBY SAID INCOMING LINE, SAID BI-DIRECTIONAL LINE AND SAID OUTGOING LINE, IN THE ORDER NAMED, ARE CONNECTED TO SAID STORAGE DEVICE DURING SAID NONCOINCIDENT INTERVALS AND EXCHANGE ENERGY BETWEEN THE CONNECTED LINE AND SAID STORAGE DEVICE.
Claim 2
Dependent Claim
142 words
A FOUR-WIRE/TWO-WIRE CONVERTER COMPRISING: THREE LINE-TERMINALS, ONE FOR AN INCOMING LINE OF A FOUR-WIRE LINE, ONE FOR AN OUTGOING LINE OF A FOUR-WIRE LINE AND ONE FOR A BI-DIRECTIONAL LINE; THREE GATES FOR RESPECTIVE LINE TERMINALS, EACH GATE HAVING TWO TERMINALS; MEANS CONNECTING ONE TERMINAL OF EACH GATE TO RESPECTIVE ONES OF SAID LINE TERMINALS; A REACTIVE STORAGE DEVICE; THE OTHER TERMINALS OF SAID THREE GATES BEING CONNECTED IN COMMON TO SAID STORAGE DEVICE; THREE NON-COINCIDENT TIME CHANNELS FOR RESPECTIVE ONES OF SAID GATES; AND MEANS CONNECTING EACH OF SAID TIME CHANNELS TO ITS RESPECTIVE GATE FOR CYCLICALLY UNBLOCKING SAID GATES DURING SAID NON-COINCIDENT TIME INTERVALS WHEREBY SAID INCOMING LINE, SAID BI-DIRECTIONAL LINE AND SAID OUTGOING LINE, IN THE ORDER NAMED, ARE CONNECTED TO SAID STORAGE DEVICE DURING SAID NONCOINCIDENT INTERVALS AND EXCHANGE ENERGY BETWEEN THE CONNECTED LINE AND SAID STORAGE DEVICE.
Claim 3
Dependent Claim
83 words
IN A TIME DIVISION COMMUNICATION SYSTEM, A TWO-WAY TRANSMISSION LINE, AN INCOMING ONE-WAY TRANSMISSION LINE, AN OUTGOING ONE-WAY TRANSMISSION LINE, A CONVERTER, SAID CONVERTER COMPRISING GATING MEANS CONNECTED TO SAID TWOWAY TRANSMISSION LINE AND SEND AND RECEIVE GATING MEANS CONNECTED TO SAID OUTGOING AND INCOMING LINES RESPECTIVELY, STORAGE MEANS, MEANS CONNECTING SAID STORAGE MEANS TO SAID GATING MEANS, AND CONNECTIONS TO EACH OF SAID GATING MEANS FOR RECEIVING SIGNALS WHEREBY SUITABLE SIGNALS MAY BE RECEIVED FOR CONTROLLING THE CONDUCTIVITY OF THE GATING MEANS.
Claim 4
Dependent Claim
83 words
IN A TIME DIVISION COMMUNICATION SYSTEM, A TWO-WAY TRANSMISSION LINE, AN INCOMING ONE-WAY TRANSMISSION LINE, AN OUTGOING ONE-WAY TRANSMISSION LINE, A CONVERTER, SAID CONVERTER COMPRISING GATING MEANS CONNECTED TO SAID TWOWAY TRANSMISSION LINE AND SEND AND RECEIVE GATING MEANS CONNECTED TO SAID OUTGOING AND INCOMING LINES RESPECTIVELY, STORAGE MEANS, MEANS CONNECTING SAID STORAGE MEANS TO SAID GATING MEANS, AND CONNECTIONS TO EACH OF SAID GATING MEANS FOR RECEIVING SIGNALS WHEREBY SUITABLE SIGNALS MAY BE RECEIVED FOR CONTROLLING THE CONDUCTIVITY OF THE GATING MEANS.
References Cited (Backward Citations)
US2962552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |