Patent US4840613B1 successfully refreshed from Google Patents.
US3100294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time-division multiplexer
Assignee: National Aeronautics and Space Administration
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Filing: 1961-09-29
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Granted: 1963-08-06
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Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Hugh L Dryden
- 👤 John F Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:59
CPC Classifications
G; G08; G08C; G08C15/00; G08C15/06; H; H04; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
226 words
APPARATUS FOR SEQUENTIALLY CONNECTING A PLURALITY OF SIGNAL SOURCE TERMINALS TO A SINGLE OUTPUT TERMINAL, SAID APPARATUS COMPRISING A PLURALITY OF LATCHING RELAYS, SAID LATCHING RELAYS BEING ARRANGED IN A SEQUENCE, EACH SAID LATCHING RELAY HAVING A FIRST AND SECOND SIGNAL INPUT TERMINAL AND A SIGNAL OUTPUT TERMINAL, FIRST COIL MEANS, EXCITATION OF WHICH CONNECTS ONLY SAID FIRST INPUT TERMINAL TO SAID SIGNAL OUTPUT TERMINAL, AND SECOND COIL MEANS, EXCITATION OF WHICH CONNECTS ONLY SAID SECOND SIGNAL INPUT TERMINAL TO SAID SIGNAL OUTPUT TERMINAL, MEANS CONNECTING THE FIRST AND SECOND SIGNAL INPUT TERMINALS OF A FIRST OF SAID SEQUENCE OF LATCHING RELAYS TO A FIRST AND SECOND OF SAID PLURALITY OF SIGNAL SOURCE TERMINALS, MEANS RESPECTIVELY CONNECTING A DIFFERENT ONE OF SAID REMAINING SIGNAL SOURCE TERMINALS TO THE SECOND SIGNAL INPUT TERMINAL OF A DIFFERENT ONE OF SAID SEQUENCE OF LATCHING RELAYS, MEANS FOR CONNECTING THE OUTPUT TERMINAL OF EACH OF ONE OF SAID RELAYS IN SAID SEQUENCE TO THE FIRST INPUT TERMINAL OF A SUCCEEDING RELAY IN SAID SEQUENCE, MEANS CONNECTING THE OUTPUT TERMINAL OF THE LAST LATCHING RELAY IN SAID SEQUENCE TO SAID SINGLE OUTPUT TERMINAL, AND MEANS FOR APPLYING EXCITATION SUCCESSIVELY TO SAID SEQUENCE OF LATCHING RELAYS FIRST TO A SECOND COIL MEANS OF ONE OF SAID LATCHING RELAYS, THEN TO A SECOND COIL MEANS OF THE NEXT LATCHING RELAY IN SAID SE-
Claim 2
Dependent Claim
226 words
APPARATUS FOR SEQUENTIALLY CONNECTING A PLURALITY OF SIGNAL SOURCE TERMINALS TO A SINGLE OUTPUT TERMINAL, SAID APPARATUS COMPRISING A PLURALITY OF LATCHING RELAYS, SAID LATCHING RELAYS BEING ARRANGED IN A SEQUENCE, EACH SAID LATCHING RELAY HAVING A FIRST AND SECOND SIGNAL INPUT TERMINAL AND A SIGNAL OUTPUT TERMINAL, FIRST COIL MEANS, EXCITATION OF WHICH CONNECTS ONLY SAID FIRST INPUT TERMINAL TO SAID SIGNAL OUTPUT TERMINAL, AND SECOND COIL MEANS, EXCITATION OF WHICH CONNECTS ONLY SAID SECOND SIGNAL INPUT TERMINAL TO SAID SIGNAL OUTPUT TERMINAL, MEANS CONNECTING THE FIRST AND SECOND SIGNAL INPUT TERMINALS OF A FIRST OF SAID SEQUENCE OF LATCHING RELAYS TO A FIRST AND SECOND OF SAID PLURALITY OF SIGNAL SOURCE TERMINALS, MEANS RESPECTIVELY CONNECTING A DIFFERENT ONE OF SAID REMAINING SIGNAL SOURCE TERMINALS TO THE SECOND SIGNAL INPUT TERMINAL OF A DIFFERENT ONE OF SAID SEQUENCE OF LATCHING RELAYS, MEANS FOR CONNECTING THE OUTPUT TERMINAL OF EACH OF ONE OF SAID RELAYS IN SAID SEQUENCE TO THE FIRST INPUT TERMINAL OF A SUCCEEDING RELAY IN SAID SEQUENCE, MEANS CONNECTING THE OUTPUT TERMINAL OF THE LAST LATCHING RELAY IN SAID SEQUENCE TO SAID SINGLE OUTPUT TERMINAL, AND MEANS FOR APPLYING EXCITATION SUCCESSIVELY TO SAID SEQUENCE OF LATCHING RELAYS FIRST TO A SECOND COIL MEANS OF ONE OF SAID LATCHING RELAYS, THEN TO A SECOND COIL MEANS OF THE NEXT LATCHING RELAY IN SAID SE-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-05 | 1967-02-04 | 1967-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-05 | 1971-02-04 | 1971-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-05 | 1975-02-04 | 1975-08-06 | $7700.00 | Window Closed / Lapsed |