US3262016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load protector
Assignee: RTX Corp
•
Filing: 1962-08-21
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Granted: 1966-07-19
•
Expires: 1982-08-21
Abstract
No abstract record available.
Inventors
- 👤 Henry E Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:30
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/08; H02H3/10; H02H3/26; H02H3/32; H02H3/34; H02H3/353
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PROTECTOR CIRCUIT FOR A THREE-PHASE CIRCUIT HAVING A NEUTRAL POINT, SENSING MEANS CONNECTED TO THE NEUTRAL POINT OF SAID THREE-PHASE CIRCUIT FOR SENSING THE UNBALANCE OF SAID CIRCUIT AND PRODUCING A FIRST A.C. SIGNAL, MEANS RESPONSIVE TO SAID FIRST A.C. SIGNAL FOR PRODUCING A FIRST D.C. SIGNAL WHOSE MAGNITUDE IS REPRESENTATIVE OF AND PROPORTIONAL TO SAID FIRST A.C. SIGNAL, MEANS FOR SENSING THE CURRENT OF ONE PHASE TO PRODUCE A SECOND A.C. SIGNAL REPRESENTATIVE OF AND PROPORTIONAL TO SAID PHASE CURRENT, RECTIFYING MEANS RECEIVING SAID SECOND A.C. SIGNAL TO DERIVE A SECOND D.C. SIGNAL PROPORTIONAL TO SAID SECOND A.C. SIGNAL, A FIRST CIRCUIT MEANS RESPONSIVE TO EITHER SAID FIRST OR SECOND D.C. SIGNALS FOR PRODUCING AN OUTPUT SIGNAL, AND POSITIVE FEEDBACK MEANS CONNECTED BETWEEN THE OUTPUT AND THE INPUT OF SAID FIRST CIRCUIT MEANS.
Claim 2
Dependent Claim
135 words
A PROTECTOR CIRCUIT FOR A THREE-PHASE CIRCUIT HAVING A NEUTRAL POINT, SENSING MEANS CONNECTED TO THE NEUTRAL POINT OF SAID THREE-PHASE CIRCUIT FOR SENSING THE UNBALANCE OF SAID CIRCUIT AND PRODUCING A FIRST A.C. SIGNAL, MEANS RESPONSIVE TO SAID FIRST A.C. SIGNAL FOR PRODUCING A FIRST D.C. SIGNAL WHOSE MAGNITUDE IS REPRESENTATIVE OF AND PROPORTIONAL TO SAID FIRST A.C. SIGNAL, MEANS FOR SENSING THE CURRENT OF ONE PHASE TO PRODUCE A SECOND A.C. SIGNAL REPRESENTATIVE OF AND PROPORTIONAL TO SAID PHASE CURRENT, RECTIFYING MEANS RECEIVING SAID SECOND A.C. SIGNAL TO DERIVE A SECOND D.C. SIGNAL PROPORTIONAL TO SAID SECOND A.C. SIGNAL, A FIRST CIRCUIT MEANS RESPONSIVE TO EITHER SAID FIRST OR SECOND D.C. SIGNALS FOR PRODUCING AN OUTPUT SIGNAL, AND POSITIVE FEEDBACK MEANS CONNECTED BETWEEN THE OUTPUT AND THE INPUT OF SAID FIRST CIRCUIT MEANS.
References Cited (Backward Citations)
US2309433A
Cited
US2700124A
Cited
US2875382A
Cited
US2920242A
Cited
US3107318A
Cited
US3105920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |