Patent US1230620A successfully refreshed from Google Patents.
US3090874A
Expired / Lapsed
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Relay pulsing circuit
Assignee: AT&T Inc
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Filing: 1961-07-26
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Granted: 1963-05-21
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Expires: 1981-07-26
Abstract
No abstract record available.
Inventors
- 👤 Victor E Rosene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:34
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H04; H04M; H04M19/00; H04M19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A PULSING CIRCUIT COMPRISING AN ELECTROMAGNETIC RELAY HAVING A PRIMARY WINDING AND A SECONDARY WINDING, MEANS FOR APPLYING CURRENT TO SAID PRIMARY WINDING OF A MAGNITUDE LESS THAN THE NORMAL OPERATE VALUE OF THE RELAY, MEANS FOR APPLYING CURRENT TO SAID SECONDARY WINDING, MEANS FOR CHANGING THE DIRECTION OF THE CURRENT IN SAID SECONDARY WINDING WHEREBY TO AID THE CURRENT IN THE PRIMARY WINDING AND OPERATE THE RELAY OR TO OPPOSE THE CURRENT IN THE PRIMARY WINDING AND RELEASE THE RELAY, MEANS INCLUDING A CAPACITOR FOR CONTROLLING INITIATION OF THE FLOW OF CURRENT IN SAID SECONDARY WINDING, A FIRST RESISTOR, A SECOND RESISTOR, A THIRD RESISTOR, AND MEANS EFFECTIVE IN TURN DURING A SINGLE COMPLETE TRANSITION OF SAID RELAY FROM RELEASED POSITION TO OPERATED POSITION FOR CHARGING SAID CAPACITOR THROUGH A FIRST PATH, FOR DISCHARGING SAID CAPACITOR THROUGH A FIRST PATH, FOR CHARGING SAID CAPACITOR THROUGH A THIRD PATH, THE EFFECTIVE RESISTANCE OF SAID THIRD PATH DIFFERING FROM THAT OF SAID FIRST PATH.
Claim 2
Dependent Claim
163 words
A PULSING CIRCUIT COMPRISING AN ELECTROMAGNETIC RELAY HAVING A PRIMARY WINDING AND A SECONDARY WINDING, MEANS FOR APPLYING CURRENT TO SAID PRIMARY WINDING OF A MAGNITUDE LESS THAN THE NORMAL OPERATE VALUE OF THE RELAY, MEANS FOR APPLYING CURRENT TO SAID SECONDARY WINDING, MEANS FOR CHANGING THE DIRECTION OF THE CURRENT IN SAID SECONDARY WINDING WHEREBY TO AID THE CURRENT IN THE PRIMARY WINDING AND OPERATE THE RELAY OR TO OPPOSE THE CURRENT IN THE PRIMARY WINDING AND RELEASE THE RELAY, MEANS INCLUDING A CAPACITOR FOR CONTROLLING INITIATION OF THE FLOW OF CURRENT IN SAID SECONDARY WINDING, A FIRST RESISTOR, A SECOND RESISTOR, A THIRD RESISTOR, AND MEANS EFFECTIVE IN TURN DURING A SINGLE COMPLETE TRANSITION OF SAID RELAY FROM RELEASED POSITION TO OPERATED POSITION FOR CHARGING SAID CAPACITOR THROUGH A FIRST PATH, FOR DISCHARGING SAID CAPACITOR THROUGH A FIRST PATH, FOR CHARGING SAID CAPACITOR THROUGH A THIRD PATH, THE EFFECTIVE RESISTANCE OF SAID THIRD PATH DIFFERING FROM THAT OF SAID FIRST PATH.
References Cited (Backward Citations)
US2892105A
Cited
US2892954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |