Patent US3200390A successfully refreshed from Google Patents.
US3200390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage monitoring circuit
Assignee: Unisys Corp
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Filing: 1960-12-20
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Granted: 1965-08-10
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Expires: 1980-12-20
Abstract
No abstract record available.
Inventors
- 👤 Jr John Presper Eckert
- 👤 Lukoff Herman
- 👤 Porath Nachum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:47
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/165; G01R19/16504; G01R19/16509
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A SYSTEM FOR CHECKING THE OUTPUT VOLTAGE LEVELS OF A PLURALITY OF VOLTAGE SOURCES, SAID SYSTEM COMPRISING A REGULATED VOLTAGE SOURCE FOR PRODUCING AN ACCURATELY DEFINED VOLTAGE, VOLTAGE DIVIDER MEANS CONNECTED ACROSS SAID REGULATED VOLTAGE SOURCE THEREBY TO PROVIDE A DIFFERENT REFERENCE VOLTAGE LEVEL AT EACH OF THE TERMINALS OF SAID VOLTAGE DIVIDER MEANS, MEANS FOR COMPARING THE VOLTAGE LEVELS AT SAID VOLTAGE DIVIDER TERMINALS WITH THE OUTPUT VOLTAGE LEVELS OF SAID PLURALITY OF VOLTAGE SOURCES TO BE CHECKED, SAID COMPARING MEANS INCLUDING AT LEAST TWO OPPOSITELY POLED UNILATERAL CONDUCTOR MEANS EACH CONNECTED TO A DIFFERENT ONE OF SAID VOLTAGE DIVIDER TERMINALS AND HAVING A SINGLE COMMON JUNCTION THEREBETWEEN, SAID SINGLE COMMON JUNCTION BEING ADAPTED TO RECEIVE SAID OUTPUT VOLTAGE LEVELS TO BE CHECKED, SAID UNILATERAL CONDUCTOR MEANS BEING NORMALLY REVERSE BIASED WHEN THE VOLTAGE LEVEL APPLIED TO SAID COMMON JUNCTION TO BE CHECKED FALLS
Claim 2
Independent Claim
145 words
A SYSTEM FOR CHECKING THE OUTPUT VOLTAGE LEVELS OF A PLURALITY OF VOLTAGE SOURCES, SAID SYSTEM COMPRISING A REGULATED VOLTAGE SOURCE FOR PRODUCING AN ACCURATELY DEFINED VOLTAGE, VOLTAGE DIVIDER MEANS CONNECTED ACROSS SAID REGULATED VOLTAGE SOURCE THEREBY TO PROVIDE A DIFFERENT REFERENCE VOLTAGE LEVEL AT EACH OF THE TERMINALS OF SAID VOLTAGE DIVIDER MEANS, MEANS FOR COMPARING THE VOLTAGE LEVELS AT SAID VOLTAGE DIVIDER TERMINALS WITH THE OUTPUT VOLTAGE LEVELS OF SAID PLURALITY OF VOLTAGE SOURCES TO BE CHECKED, SAID COMPARING MEANS INCLUDING AT LEAST TWO OPPOSITELY POLED UNILATERAL CONDUCTOR MEANS EACH CONNECTED TO A DIFFERENT ONE OF SAID VOLTAGE DIVIDER TERMINALS AND HAVING A SINGLE COMMON JUNCTION THEREBETWEEN, SAID SINGLE COMMON JUNCTION BEING ADAPTED TO RECEIVE SAID OUTPUT VOLTAGE LEVELS TO BE CHECKED, SAID UNILATERAL CONDUCTOR MEANS BEING NORMALLY REVERSE BIASED WHEN THE VOLTAGE LEVEL APPLIED TO SAID COMMON JUNCTION TO BE CHECKED FALLS
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |