US3173022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overload protected switching circuit
Assignee: North American Aviation Corp
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Filing: 1961-06-14
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Granted: 1965-03-09
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Expires: 1981-06-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold E Kunsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:03
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/5387; H02M7/53871
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A SWITCHING CIRCUIT COMPRISING: A LOAD; MEANS FOR PROVIDING FIRST AND SECOND OPPOSITELY DIRECTED CURRENT PATHS THROUGH SAID LOAD, SAID PATHS INCLUDING FIRST AND SECOND SWITCHES CONNECTED TO ONE SIDE OF SAID LOAD; MEANS FOR OPENING AND CLOSING SAID SWITCHES LATERNATELY, MEANS FOR LIMITING CURRENT FLOW THROUGH AT LEAST ONE OF SAID SWITCHES DURING PERIODS OF SHIFTING OF SAID SWITCHES BETWEEN THEIR OPEN AND CLOSED CONDITIONS, AND MEANS RESPONSIVE TO CURRENT FLOW THROUGH SAID LOAD FOR CONTROLLING THE FLOW OF CURRENT THROUGH SAID LOAD.
Claim 2
Dependent Claim
84 words
A SWITCHING CIRCUIT COMPRISING: A LOAD; MEANS FOR PROVIDING FIRST AND SECOND OPPOSITELY DIRECTED CURRENT PATHS THROUGH SAID LOAD, SAID PATHS INCLUDING FIRST AND SECOND SWITCHES CONNECTED TO ONE SIDE OF SAID LOAD; MEANS FOR OPENING AND CLOSING SAID SWITCHES LATERNATELY, MEANS FOR LIMITING CURRENT FLOW THROUGH AT LEAST ONE OF SAID SWITCHES DURING PERIODS OF SHIFTING OF SAID SWITCHES BETWEEN THEIR OPEN AND CLOSED CONDITIONS, AND MEANS RESPONSIVE TO CURRENT FLOW THROUGH SAID LOAD FOR CONTROLLING THE FLOW OF CURRENT THROUGH SAID LOAD.
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 |