US3230452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test apparatus for plotting the load characteristic curves of low power direct current power sources
Assignee: Individual
•
Filing: 1962-03-19
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Granted: 1966-01-18
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Expires: 1982-03-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Angello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:40
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A TEST CIRCUIT FOR A LOW POWER DIRECT-CURRENT SOURCE COMPRISING: A DIRECT-CURRENT POWER SUPPLY, THE VOLTAGE OF WHICH IS GREATER THAN THAT OF SAID LOW POWER DIRECT-CURRENT SOURCE, A SWITCH, A CAPACITOR AND A FIRST RESISTOR CONNECTED IN SERIES; A SECOND RESISTOR AND SAID LOW POWER SOURCE SERIALLY CONNECTED ACROSS SAID CAPACITOR, THE POSITIVE TERMINAL OF SAID LOW POWER SOURCE BEING CONNECTED TO THE NEGATIVE TERMINAL OF SAID DIRECT-CURRENT POWER SUPPLY SO THAT SAID DIRECT-CURRENT POWER SUPPLY OVER-DRIVES SAID LOW POWER DIRECT-CURRENT SOURCE AS SAID CAPACITOR CHARGES; AB X-Y RECORDER HAVING FIRST AND SECOND PAIRS OF INPUT TERMINALS; SAID SECOND RESISTOR AND SAID SECOND PAIR OF INPUT TERMINALS BEING CONNECTED ACROSS SAID LOW POWER SOURCE.
Claim 2
Dependent Claim
115 words
A TEST CIRCUIT FOR A LOW POWER DIRECT-CURRENT SOURCE COMPRISING: A DIRECT-CURRENT POWER SUPPLY, THE VOLTAGE OF WHICH IS GREATER THAN THAT OF SAID LOW POWER DIRECT-CURRENT SOURCE, A SWITCH, A CAPACITOR AND A FIRST RESISTOR CONNECTED IN SERIES; A SECOND RESISTOR AND SAID LOW POWER SOURCE SERIALLY CONNECTED ACROSS SAID CAPACITOR, THE POSITIVE TERMINAL OF SAID LOW POWER SOURCE BEING CONNECTED TO THE NEGATIVE TERMINAL OF SAID DIRECT-CURRENT POWER SUPPLY SO THAT SAID DIRECT-CURRENT POWER SUPPLY OVER-DRIVES SAID LOW POWER DIRECT-CURRENT SOURCE AS SAID CAPACITOR CHARGES; AB X-Y RECORDER HAVING FIRST AND SECOND PAIRS OF INPUT TERMINALS; SAID SECOND RESISTOR AND SAID SECOND PAIR OF INPUT TERMINALS BEING CONNECTED ACROSS SAID LOW POWER SOURCE.
References Cited (Backward Citations)
GB631459A
Cited
US2835862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |