US3173078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overload protective power supply
Assignee: Raytheon Co
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Filing: 1960-12-01
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Granted: 1965-03-09
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Expires: 1980-12-01
Abstract
No abstract record available.
Inventors
- 👤 Robert P Farnsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:37
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/565; G05F1/569; G05F1/573
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A POWER SUPPLY HAVING A LOAD CURRENT PATH, REGULATING MEANS COUPLED IN THE LOAD CURRENT PATH AND CONTROL MEANS COUPLED TO SAID LOAD CURRENT PATH AND TO SAID REGULATING MEANS AND BEING CAPABLE TO RENDERING SAID REGULATING MEANS NONCONDUCTIVE IN RESPONSE TO A DISCONNECT SIGNAL, AN OVERLOAD SENSING CIRCUIT COMPRISING A TUNNEL DIODE COUPLED IN THE LOAD CURRENT PATH, AND A TRANSISTOR HAVING A BASE AND A FIRST ELECTRODE COUPLED ACROSS SAID TUNNEL DIODE AND HAVING A SECOND ELECTRODE COUPLED TO SAID CONTROL MEANS FOR APPLYING THE DISCONNECT SIGNAL THERETO WHEN THE CURRENT IN SAID LOAD CURRENT PATH INCREASES TO A PREDETERMINED VALUE AND FOR TERMINATING SAID DISCONNECT SIGNAL WHEN THE CURRENT DECREASES IN SAID LOAD PATH IN RESPONSIVE TO SAID REGULATING MEANS BEING RENDERED NONCONDUCTIVE.
Claim 2
Dependent Claim
127 words
IN A POWER SUPPLY HAVING A LOAD CURRENT PATH, REGULATING MEANS COUPLED IN THE LOAD CURRENT PATH AND CONTROL MEANS COUPLED TO SAID LOAD CURRENT PATH AND TO SAID REGULATING MEANS AND BEING CAPABLE TO RENDERING SAID REGULATING MEANS NONCONDUCTIVE IN RESPONSE TO A DISCONNECT SIGNAL, AN OVERLOAD SENSING CIRCUIT COMPRISING A TUNNEL DIODE COUPLED IN THE LOAD CURRENT PATH, AND A TRANSISTOR HAVING A BASE AND A FIRST ELECTRODE COUPLED ACROSS SAID TUNNEL DIODE AND HAVING A SECOND ELECTRODE COUPLED TO SAID CONTROL MEANS FOR APPLYING THE DISCONNECT SIGNAL THERETO WHEN THE CURRENT IN SAID LOAD CURRENT PATH INCREASES TO A PREDETERMINED VALUE AND FOR TERMINATING SAID DISCONNECT SIGNAL WHEN THE CURRENT DECREASES IN SAID LOAD PATH IN RESPONSIVE TO SAID REGULATING MEANS BEING RENDERED NONCONDUCTIVE.
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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |