US3351769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static switching system with a single means for selecting any of a plurality of d. c. loads to be supplied
Assignee: Brush Electrical Engineering Co Ltd
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Filing: 1964-08-03
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Granted: 1967-11-07
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Expires: 1984-08-03
Abstract
No abstract record available.
Inventors
- 👤 Rex M Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:08
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A STATIC SWITCHING SYSTEM FOR SELECTIVELY CONNECTING A PLURALITY OF LOADS IN PARALLEL BETWEEN THE POSITIVE AND NEGATIVES LINES OF A D.C. SUPPLY, COMPRISING A RESPECTIVE STATIC SWITCHING DEVICE INTERPOSED BETWEEN ONE OF THE D.C. SUPPLY LINES AND EACH LOAD, AND A SINGLE MEANS INTERPOSED BETWEEN BOTH D.C. SUPPLY LINES ON THE ONE HAND AND THE LOADS WITH THEIR RESPECTIVE STATIC SWITCHING DEVICES ON THE OTHER HAND TO CAUSE A REVERSE VOLTAGE TO BE APPLIED TO ALL OF SAID RESPECTIVE STATIC SWITCHING DEVICES TO TURN THEN OFF AND THEREBY INHIBIT CURRENT FLOW THROUGH SAID LOADS, SAID REVERSE VOLTAGE BEING OF LONGER DURATION THAN THE TURN-OFF TIME OF THE ONE OF SAID RESPECTIVE STATIC SWITCHING DEVICES LAST TO ACHIEVE THE TURNED-OFF CONDITION.
Claim 2
Dependent Claim
121 words
A STATIC SWITCHING SYSTEM FOR SELECTIVELY CONNECTING A PLURALITY OF LOADS IN PARALLEL BETWEEN THE POSITIVE AND NEGATIVES LINES OF A D.C. SUPPLY, COMPRISING A RESPECTIVE STATIC SWITCHING DEVICE INTERPOSED BETWEEN ONE OF THE D.C. SUPPLY LINES AND EACH LOAD, AND A SINGLE MEANS INTERPOSED BETWEEN BOTH D.C. SUPPLY LINES ON THE ONE HAND AND THE LOADS WITH THEIR RESPECTIVE STATIC SWITCHING DEVICES ON THE OTHER HAND TO CAUSE A REVERSE VOLTAGE TO BE APPLIED TO ALL OF SAID RESPECTIVE STATIC SWITCHING DEVICES TO TURN THEN OFF AND THEREBY INHIBIT CURRENT FLOW THROUGH SAID LOADS, SAID REVERSE VOLTAGE BEING OF LONGER DURATION THAN THE TURN-OFF TIME OF THE ONE OF SAID RESPECTIVE STATIC SWITCHING DEVICES LAST TO ACHIEVE THE TURNED-OFF CONDITION.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |