US3395253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telecommunication coordinate relay switching systems having auxiliary holding means
Assignee: Associated Electrical Industries Ltd
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Filing: 1965-08-17
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Granted: 1968-07-30
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Expires: 1985-08-17
Abstract
No abstract record available.
Inventors
- 👤 Warman Bloomfield James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:42
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0008; H04Q3/0012; C; C13; C13K; C13K1/00; C13K1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A CO-ORDINATE RELAY SWITCHING SYSTEM COMPRISING A MULTI-STAGE CO-ORDINATE SWITCHING NETWORK INCLUDING FOR EACH COMMUNICATION PATH ESTABLISHABLE THERETHROUGH A CONTROL CONNECTION WHICH INCLUDES FOR EACH CROSS-POINT INCLUDED IN SAID PATH AN OPERATING WINDING OF A RELAY FOR THAT CROSS-POINT AND AN EXTENDING AND HOLDING MAKE CONTACT OF THE RELAY CONNECTED IN SERIES WITH SAID OPERATING WINDING ON THE OPPOSITE SIDE THEREOF FROM A PARTICULAR END OF THE CONTROL CONNECTION, THE SYSTEM FURTHER COMPRISING MEANS FOR APPLYING AN OPERATING POTENTIAL TO SAID PARTICULAR END OF EACH SUCH CONTROL CONNECTION, MARKING CONNECTIONS WHICH INCLUDE RESPECTIVE UNIDIRECTIONALLY CONDUCTIVE DEVICES AND ARE RESPECTIVELY CONNECTED TO THE JUNCTIONS BETWEEN THE SAID CROSS-POINT RELAY OPERATING WINDINGS AND THEIR SAID MAKE CONTACTS IN SAID CONTROL CONNECTIONS MEANS FOR APPLYING TO SELECTED MARKING CONNECTIONS A MARKING POTENTIAL OF SUCH POLARITY IN RELATION TO THE OPERATING POTENTIAL AS TO BE EFFECTIVE, THROUGH THE UNIDIRECTIONALLY CONDUCTIVE DEVICES IN THE SELECTED MARKING CONNECTIONS, TO OPERATE THE CROSS-POINT RELAYS IN A PARTICULAR
Claim 2
Dependent Claim
160 words
A CO-ORDINATE RELAY SWITCHING SYSTEM COMPRISING A MULTI-STAGE CO-ORDINATE SWITCHING NETWORK INCLUDING FOR EACH COMMUNICATION PATH ESTABLISHABLE THERETHROUGH A CONTROL CONNECTION WHICH INCLUDES FOR EACH CROSS-POINT INCLUDED IN SAID PATH AN OPERATING WINDING OF A RELAY FOR THAT CROSS-POINT AND AN EXTENDING AND HOLDING MAKE CONTACT OF THE RELAY CONNECTED IN SERIES WITH SAID OPERATING WINDING ON THE OPPOSITE SIDE THEREOF FROM A PARTICULAR END OF THE CONTROL CONNECTION, THE SYSTEM FURTHER COMPRISING MEANS FOR APPLYING AN OPERATING POTENTIAL TO SAID PARTICULAR END OF EACH SUCH CONTROL CONNECTION, MARKING CONNECTIONS WHICH INCLUDE RESPECTIVE UNIDIRECTIONALLY CONDUCTIVE DEVICES AND ARE RESPECTIVELY CONNECTED TO THE JUNCTIONS BETWEEN THE SAID CROSS-POINT RELAY OPERATING WINDINGS AND THEIR SAID MAKE CONTACTS IN SAID CONTROL CONNECTIONS MEANS FOR APPLYING TO SELECTED MARKING CONNECTIONS A MARKING POTENTIAL OF SUCH POLARITY IN RELATION TO THE OPERATING POTENTIAL AS TO BE EFFECTIVE, THROUGH THE UNIDIRECTIONALLY CONDUCTIVE DEVICES IN THE SELECTED MARKING CONNECTIONS, TO OPERATE THE CROSS-POINT RELAYS IN A PARTICULAR
References Cited (Backward Citations)
US3308244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |