Patent US2455619A successfully refreshed from Google Patents.
US3074008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Converter
Assignee: Melabs
•
Filing: 1960-04-05
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Granted: 1963-01-15
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Expires: 1980-04-05
Abstract
No abstract record available.
Inventors
- 👤 James H Mcphall
- 👤 William E Budd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:37
CPC Classifications
H; H02; H02M; H02M3/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
A CONVERTER SERVING TO SUPPLY VARIABLE POWER TO A LOAD FROM A DIRECT CURRENT POWER SOURCE SUPPLYING A VOLTAGE INCLUDING A FIRST CONTROLLED RECTIFIER FOR SELECTIVELY CONNECTING THE POWER SOURCE TO THE LOAD IN RESPONSE TO A GATING SIGNAL, SAID CONTROLLED RECTIFIER HAVING FORWARD AND REVERSE BREAKDOWN VOLTAGES BELOW WHICH IT HAS A LOW CONDUCTANCE AND GATING MEANS RESPONSIVE TO A GATING SIGNAL FOR GATING THE RECTIFIER INTO A HIGH FORWARD CONDUCTANCE IN WHICH STATE IT CONTINUES TO OPERATE UNTIL THE CURRENT FLOWING THROUGH THE SAME IS INTERRUPTED, SAID CONTROLLED RECTIFIER HAVING A FORWARD BREAKDOWN VOLTAGE GREATER THAN THE POWER SOURCE VOLTAGE, STORAGE MEANS, MEANS RESPONSIVE TO THE GATING SIGNAL FOR APPLYING POWER FROM THE
References Cited (Backward Citations)
US2925546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |