US3104353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized overload and short-circuit protection device
Assignee: Individual
•
Filing: 1960-12-21
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Granted: 1963-09-17
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Expires: 1980-12-21
Abstract
No abstract record available.
Inventors
- 👤 Donald J Theobald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:03
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/565; G05F1/569; G05F1/573
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
AN OVERLOAD PROTECTOR COMPRISING IN COMBINATION, A POSITIVE AND A NEGATIVE INPUT TERMINAL, A POSITIVE AND A NEGATIVE OUTPUT TERMINAL, SAID NEGATIVE OUTPUT TERMINAL BEING CONNECTED TO SAID NEGATIVE INPUT TERMINAL, A FIRST SWITCH MEANS INTERCONNECTING SAID POSITIVE INPUT AND OUTPUT TERMINALS, A FIRST VOLTAGE DIVIDER NETWORK COUPLED ACROSS SAID INPUT TERMINALS, A SECOND VOLTAGE DIVIDER NETWORK COUPLED ACROSS SAID OUTPUT TERMINALS, A SECOND SWITCH MEANS CONNECTED BETWEEN SAID FIRST SWITCH MEANS AND SAID SECOND VOLTAGE DIVIDER NETWORK, A THIRD SWITCH MEANS CONNECTED TO SAID FIRST AND SECOND SWITCH MEANS AND SAID FIRST VOLTAGE DIVIDER, AND MEANS INTERCONNECTING SAID NEGATIVE INPUT AND OUTPUT TERMINALS AND SAID SECOND AND THIRD SWITCH MEANS FOR SUBSTANTIALLY PROVIDING A PREDETERMINED REFERENCE POTENTIAL THEREAT.
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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |