US3176162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-speed linear sweep circuit
Assignee: Fujitsu Ltd
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Filing: 1963-03-07
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Granted: 1965-03-30
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Expires: 1983-03-07
Abstract
No abstract record available.
Inventors
- 👤 Kawashima Masao
- 👤 Hoshino Maroshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:12
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/50; H03K4/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A HIGH SPEED LINEAR SWEEP CIRCUIT, COMPRISING A SWEEP CAPACITOR, FIRST SWITCH MEANS CONNECTED ACROSS SAID SWEEP CAPACITOR FOR DISCHARGING SAID SWEEP CAPACITOR AND FOR PERMITTING SAID SWEEP CAPACITOR TO CHARGE THROUGH SAID FIRST SWITCH MEANS, A CHARGING RESISTOR CONNECTED TO SAID SWEEP CAPACITOR, AMPLIFIER MEANS HAVING AN INPUT CONNECTED TO SAID SWEEP CAPACITOR AND AN OUTPUT AND RESPONDING TO THE VOLTAGE ACROSS SAID SWEEP CAPACITOR, A VOLTAGE SOURCE, A CLAMP DIODE CONNECTED TO SAID CHARGING RESISTOR AND ADAPTED TO CONNECT SAID CHARGING RESISTOR TO SAID VOLTAGE SOURCE, A CLAMP CAPACITOR CONNECTING THE JUNCTION OF SAID DIODE AND SAID CHARGING RESISTOR TO THE OUTPUT OF SAID AMPLIFIER MEANS, AND SECOND SWITCH MEANS RESPONSIVE TO AN INPUT SIGNAL FOR CHANGING SAID CLAMP CAPACITOR DURING DISCHARGE TO SAID SWEEP CAPACITOR, SAID SECOND SWITCH MEANS BEING CONNECTED FROM THE INPUT OF SAID FIRST SWITCH MEANS TO THE OUTPUT OF SAID AMPLIFIER MEANS.
Claim 2
Dependent Claim
149 words
A HIGH SPEED LINEAR SWEEP CIRCUIT, COMPRISING A SWEEP CAPACITOR, FIRST SWITCH MEANS CONNECTED ACROSS SAID SWEEP CAPACITOR FOR DISCHARGING SAID SWEEP CAPACITOR AND FOR PERMITTING SAID SWEEP CAPACITOR TO CHARGE THROUGH SAID FIRST SWITCH MEANS, A CHARGING RESISTOR CONNECTED TO SAID SWEEP CAPACITOR, AMPLIFIER MEANS HAVING AN INPUT CONNECTED TO SAID SWEEP CAPACITOR AND AN OUTPUT AND RESPONDING TO THE VOLTAGE ACROSS SAID SWEEP CAPACITOR, A VOLTAGE SOURCE, A CLAMP DIODE CONNECTED TO SAID CHARGING RESISTOR AND ADAPTED TO CONNECT SAID CHARGING RESISTOR TO SAID VOLTAGE SOURCE, A CLAMP CAPACITOR CONNECTING THE JUNCTION OF SAID DIODE AND SAID CHARGING RESISTOR TO THE OUTPUT OF SAID AMPLIFIER MEANS, AND SECOND SWITCH MEANS RESPONSIVE TO AN INPUT SIGNAL FOR CHANGING SAID CLAMP CAPACITOR DURING DISCHARGE TO SAID SWEEP CAPACITOR, SAID SECOND SWITCH MEANS BEING CONNECTED FROM THE INPUT OF SAID FIRST SWITCH MEANS TO THE OUTPUT OF SAID AMPLIFIER MEANS.
References Cited (Backward Citations)
US2915650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |