Patent US3302085A successfully refreshed from Google Patents.
US3302085A
Expired / Lapsed
US
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Load control systems using magnetic amplifiers and controlled rectifiers
Assignee: Leeds and Northrup Co
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Filing: 1963-07-09
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Granted: 1967-01-31
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Expires: 1983-07-09
Abstract
No abstract record available.
Inventors
- 👤 Leonard R Hulls
- 👤 Rolland H Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:04
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A CONTROL SYSTEM COMPRISING A MAGNETIC AMPLIFIER HAVING INPUT AND OUTPUT CIRCUITS, SAID AMPLIFIER IN RESPONSE TO A D.C. SIGNAL INPUT PRODUCING OUTPUT PULSES OF POLARITY DEPENDENT UPON THE POLARITY OF THE D.C. SIGNAL INPUT, A PAIR OF SIGNAL CHANNELS, POLARITY-SENSITIVE MEANS FOR DIRECTING SAID OUTPUT PULSES TO ONE OR THE OTHER OF THE SIGNAL CHANNELS OF SAID PAIR IN DEPENDENCE UPON THE POLARITY OF SAID AMPLIFIER OUTPUT PULSES, RECTIFIER CIRCUITS RESPECTIVELY ASSOCIATED WITH THE CHANNELS EACH FOR PRODUCING A D.C. OUTPUT SIGNAL FROM PULSES DIRECTED TO THAT CHANNEL, MEANS FOR ISOLATING THE RECTIFIER CIRCUITS OF THE CHANNELS FROM EACH OTHER SELECTIVELY TO PRODUCE ISOLATED D.C. SIGNAL OUTPUTS IN DEPENDENCE UPON THE POLARITY OF THE D.C. SIGNAL INPUT TO SAID AMPLIFIER, AND CONTROLLED RECTIFIERS ASSOCIATED WITH THE SIGNAL CHANNELS FOR GATING BY SAID ISOLATED D.C. SIGNAL OUTPUTS.
Claim 2
Dependent Claim
137 words
A CONTROL SYSTEM COMPRISING A MAGNETIC AMPLIFIER HAVING INPUT AND OUTPUT CIRCUITS, SAID AMPLIFIER IN RESPONSE TO A D.C. SIGNAL INPUT PRODUCING OUTPUT PULSES OF POLARITY DEPENDENT UPON THE POLARITY OF THE D.C. SIGNAL INPUT, A PAIR OF SIGNAL CHANNELS, POLARITY-SENSITIVE MEANS FOR DIRECTING SAID OUTPUT PULSES TO ONE OR THE OTHER OF THE SIGNAL CHANNELS OF SAID PAIR IN DEPENDENCE UPON THE POLARITY OF SAID AMPLIFIER OUTPUT PULSES, RECTIFIER CIRCUITS RESPECTIVELY ASSOCIATED WITH THE CHANNELS EACH FOR PRODUCING A D.C. OUTPUT SIGNAL FROM PULSES DIRECTED TO THAT CHANNEL, MEANS FOR ISOLATING THE RECTIFIER CIRCUITS OF THE CHANNELS FROM EACH OTHER SELECTIVELY TO PRODUCE ISOLATED D.C. SIGNAL OUTPUTS IN DEPENDENCE UPON THE POLARITY OF THE D.C. SIGNAL INPUT TO SAID AMPLIFIER, AND CONTROLLED RECTIFIERS ASSOCIATED WITH THE SIGNAL CHANNELS FOR GATING BY SAID ISOLATED D.C. SIGNAL OUTPUTS.
References Cited (Backward Citations)
US3083327A
Cited
US3183425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |