US3440445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for substantially eliminating radio frequency interference
Assignee: Clevite Corp
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Filing: 1966-04-25
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Granted: 1969-04-22
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Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 Henry J Kusa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:38
CPC Classifications
H; H04; H04B; H04B15/00; H04B15/02; H03; H03K; H03K17/00; H03K17/13; H03K17/136
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
146 words
A SYSTEM FOR CONTROLLING RFI WHEN TURNING ON AND OFF AN ALTERNATING CURRENT CIRCUIT FROM A TWO-LINE POWER SOURCE TO A LOAD, COMPRISING, A FULL WAVE RECTIFIER BRIDGE HAVING DC AND AC TERMINALS, THE DC TERMINALS BEING PLUS AND MINUS, A CONTROLLED RECTIFIER HAVING A GATE CONNECTED ACROSS THE DC TERMINALS OF SAID BRIDGE, THE AC TERMINALS OF SIAD BRIDGE BEING CONNECTED IN ONE OF SAID LINES BETWEEN SAID POWER SOURCE AND SAID LOAD, A FOURLAYER DIODE CONNECTED ACROSS THE DC TERMINALS OF SAID BRIDGE, FIRST RESISTOR MEANS CONNECTED BETWEEN SAID FOURLAYER DIODE AND THE PLUS DC TERMINAL OF SAID BRIDGE TO LIMIT CURRENT THROUGH SAID FOUR-LAYER DIODE, CIRCUIT MEANS CONNECTED ACROSS SAID CONTROLLED RECTIFIER INCLUDING SWITCH MEANS ONE TERMINAL OF WHICH IS CONNECTED TO THE GATE OF SAID CONTROLLED RECTIFIER, AND ANOTHER TERMINAL OF WHICH IS CONNECTED TO THE PLUS DC TERMINAL OF SAID BRIDGE.
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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |