US3260897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection device for plural phase electrical loads consisting of a plurality of monitoring relays controlling the energization of the load
Assignee: Individual
•
Filing: 1963-08-23
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Granted: 1966-07-12
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Expires: 1983-08-23
Abstract
No abstract record available.
Inventors
- 👤 Iii Roy Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:28
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/24; H02H3/253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN COMBINATION WITH A CIRCUIT BREAKER FOR POLYPHASE POWER LINES CONNECTED TO A LOAD HAVING A CIRCUIT HOLDING COIL ENERGIZED BY POWER SUPPLIED FROM TWO OF SAID POWER LINES TO HOLD THE CIRCUIT BREAKER CLOSED, A POWER FAILURE PROTECTION DEVICE COMPRISING A PLURALIITY OF RELAY DEVICES, TERMINAL MEANS CONNECTING SAID RELAY DEVICES TO THE POWER LINES ON THE INPUT SIDE OF THE CIRCUIT BREAKER FOR ENERGIZATION OF ONE OF THE RELAY DEVICES INCLUDING CONDUCTORS CONNECTING SAID ONE OF THE RELAY DEVICES ACROSS TWO OF THE POWERS LINES, RELAY SWITCH MEANS CLOSED IN RESPONSE TO ENERGIZATION OF SAID ONE RELAY DEVICE FOR CONNECTING ALL OF THE RELAY DEVICES ACROSS DIFFERENT PAIRS OF THE POWER LINES RESPECTIVELY TO SIMULTANEOUSLY ENERGIZE ALL OF THE RELAY DEVICES, AND MEANS RESPONSIVE TO DEENERGIZTION OF ANY OF SAID RELAY DEVICES FOR DEENERGIZING SAID HOLDING COIL AND AUTOMATICALLY REENERGIZING THE HOLDING COIL UPON RESTORATION OF POWER TO ALL OF SAID POWER LINES.
Claim 2
Dependent Claim
155 words
IN COMBINATION WITH A CIRCUIT BREAKER FOR POLYPHASE POWER LINES CONNECTED TO A LOAD HAVING A CIRCUIT HOLDING COIL ENERGIZED BY POWER SUPPLIED FROM TWO OF SAID POWER LINES TO HOLD THE CIRCUIT BREAKER CLOSED, A POWER FAILURE PROTECTION DEVICE COMPRISING A PLURALIITY OF RELAY DEVICES, TERMINAL MEANS CONNECTING SAID RELAY DEVICES TO THE POWER LINES ON THE INPUT SIDE OF THE CIRCUIT BREAKER FOR ENERGIZATION OF ONE OF THE RELAY DEVICES INCLUDING CONDUCTORS CONNECTING SAID ONE OF THE RELAY DEVICES ACROSS TWO OF THE POWERS LINES, RELAY SWITCH MEANS CLOSED IN RESPONSE TO ENERGIZATION OF SAID ONE RELAY DEVICE FOR CONNECTING ALL OF THE RELAY DEVICES ACROSS DIFFERENT PAIRS OF THE POWER LINES RESPECTIVELY TO SIMULTANEOUSLY ENERGIZE ALL OF THE RELAY DEVICES, AND MEANS RESPONSIVE TO DEENERGIZTION OF ANY OF SAID RELAY DEVICES FOR DEENERGIZING SAID HOLDING COIL AND AUTOMATICALLY REENERGIZING THE HOLDING COIL UPON RESTORATION OF POWER TO ALL OF SAID POWER LINES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |