US3125751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
R- winters
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
•
Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:20
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A SYSTEM FOR INDICATING THE PRESENCE OF AN ENERGIZED ELECTRICAL CIRCUIT, SAID SYSTEM COMPRISING A FIRST ANTENNA MEANS FOR SENSING THE PRESENCE OF THE FLOW OF ELECTRIC CURRENT, A SECOND ANTENNA MEANS FOR SENSING THE PRESENCE OF THE FLOW OF ELECTRIC CURRENT, MEANS FOR ELECTRICALLY SHIELDING SAID FIRST ANTENNA MEANS FROM SAID SECOND ANTENNA MEANS, A NORMALLY ENERGIZED RELAY, AN ALARM, ENERGIZING MEANS CONNECTED TO SAID RELAY AND ALARM FOR ENERGIZING SAID ALARM WHEN SAID RELAY IS DEENERGIZED, AND CONTROL MEANS CONNECTED TO SAID FIRST ANTENNA AND SECOND ANTENNA MEANS AND TO SAID RELAY FOR DEENERGIZING SAID RELAY WHEN SAID FIRST ANTENNA MEANS DETECTS THE PRESENCE OF AN ELECTRIC CURRENT FLOW AND FOR DEENERGIZING SAID RELAY WHEN SAID SECOND ANTENNA MEANS DETECTS THE PRESENCE OF AN ELECTRIC CURRENT FLOW.
Claim 2
Independent Claim
129 words
A SYSTEM FOR INDICATING THE PRESENCE OF AN ENERGIZED ELECTRICAL CIRCUIT, SAID SYSTEM COMPRISING A FIRST ANTENNA MEANS FOR SENSING THE PRESENCE OF THE FLOW OF ELECTRIC CURRENT, A SECOND ANTENNA MEANS FOR SENSING THE PRESENCE OF THE FLOW OF ELECTRIC CURRENT, MEANS FOR ELECTRICALLY SHIELDING SAID FIRST ANTENNA MEANS FROM SAID SECOND ANTENNA MEANS, A NORMALLY ENERGIZED RELAY, AN ALARM, ENERGIZING MEANS CONNECTED TO SAID RELAY AND ALARM FOR ENERGIZING SAID ALARM WHEN SAID RELAY IS DEENERGIZED, AND CONTROL MEANS CONNECTED TO SAID FIRST ANTENNA AND SECOND ANTENNA MEANS AND TO SAID RELAY FOR DEENERGIZING SAID RELAY WHEN SAID FIRST ANTENNA MEANS DETECTS THE PRESENCE OF AN ELECTRIC CURRENT FLOW AND FOR DEENERGIZING SAID RELAY WHEN SAID SECOND ANTENNA MEANS DETECTS THE PRESENCE OF AN ELECTRIC CURRENT FLOW.
References Cited (Backward Citations)
US2615969A
Cited
US2789282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |