US3312875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay control for systems distributing electric energy
Assignee: Individual
•
Filing: 1963-02-26
•
Granted: 1967-04-04
•
Expires: 1983-02-26
Abstract
No abstract record available.
Inventors
- 👤 Mayer Ferdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:06
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/26; H02H3/32; H02H3/34; H02H3/347; H02H1/00; H02H1/06; H02H1/063; H02J; H02J13/00; H02J13/13; H02J13/1311; H02J13/1313; H02J13/18; H02J13/34; H02J13/36; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/73; Y; Y02; Y02E; Y02E60/00; Y04; Y04S; Y04S40/00; Y04S40/12; Y04S40/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
EQUIPMENT FOR THE RECEPTION OF ALARM INFORMATION CARRIED BY A.C. MAINS FROM A CENTRAL STATION WHICH DISTRIBUTES THROUGH SAID MAINS AN ALARM SIGNAL HAVING A FREQUENCY DIFFERENT FROM THAT OF SAID MAINS, COMPRISING AT LEAST ONE INDIVIDUAL ALARM RECEIVER, SAID RECEIVER COMPRISING A PRIMARY CIRCUIT CONNECTED ACROSS THE MAINS, A SECONDARY CIRCUIT INDUCTIVELY COUPLED TO THE SAID PRIMARY CIRCUIT, AT LEAST ONE OF SAID PRIMARY AND SECONDARY CIRCUITS COMPRISING FIRST A.C. ENERGY-STORING MEANS TUNED TO THE FREQUENCY OF SAID ALARM SIGNAL, RECTIFYING MEANS, SECOND D.C. ENERGY-STORING MEANS LOADING SAID RECTIFYING MEANS, AN ELECTRONIC CUT-OFF THRESHOLD SWITCH, AND ELECTROMAGNETIC RELAY ALARM MEANS, THE SAID ELECTRONIC SWITCH CONNECTING SAID SECOND ENERGY-STORING MEANS WITH THE ELECTROMAGNETIC RELAY ALARM MEANS TO DISCHARGE THE SAID SECOND ENERGY-STORING MEANS THROUGH THE SAID ELECTROMAGNETIC RELAY ALARM MEANS.
Claim 2
Dependent Claim
130 words
EQUIPMENT FOR THE RECEPTION OF ALARM INFORMATION CARRIED BY A.C. MAINS FROM A CENTRAL STATION WHICH DISTRIBUTES THROUGH SAID MAINS AN ALARM SIGNAL HAVING A FREQUENCY DIFFERENT FROM THAT OF SAID MAINS, COMPRISING AT LEAST ONE INDIVIDUAL ALARM RECEIVER, SAID RECEIVER COMPRISING A PRIMARY CIRCUIT CONNECTED ACROSS THE MAINS, A SECONDARY CIRCUIT INDUCTIVELY COUPLED TO THE SAID PRIMARY CIRCUIT, AT LEAST ONE OF SAID PRIMARY AND SECONDARY CIRCUITS COMPRISING FIRST A.C. ENERGY-STORING MEANS TUNED TO THE FREQUENCY OF SAID ALARM SIGNAL, RECTIFYING MEANS, SECOND D.C. ENERGY-STORING MEANS LOADING SAID RECTIFYING MEANS, AN ELECTRONIC CUT-OFF THRESHOLD SWITCH, AND ELECTROMAGNETIC RELAY ALARM MEANS, THE SAID ELECTRONIC SWITCH CONNECTING SAID SECOND ENERGY-STORING MEANS WITH THE ELECTROMAGNETIC RELAY ALARM MEANS TO DISCHARGE THE SAID SECOND ENERGY-STORING MEANS THROUGH THE SAID ELECTROMAGNETIC RELAY ALARM MEANS.
References Cited (Backward Citations)
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US3030523A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |