US3105168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control arrangement
Assignee: SPACE TECHNOLOGY LAB Inc
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Filing: 1960-08-19
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Granted: 1963-09-24
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Expires: 1980-08-19
Abstract
No abstract record available.
Inventors
- 👤 George L Clark
- 👤 John J Hickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:34
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
315 words
A VOLTAGE CONTROL ARRANGEMENT FOR AN IMAGE CONVERTER TUBE DEVICE HAVING A GATING GRID AND DEFLECTION PLATES, COMPRISING: A MULTI-ELEMENT GRID CONTROLLED HIGH POWER VACUUM TUBE; A CAPACITOR CONNECTED BETWEEN AN ANODE OF SAID TUBE AND GROUND TO BE CHARGED TO THE VOLTAGE APPEARING AT THE ANODE; MEANS FOR CHARGING SAID CAPACITOR DURING A NON-CONDUCTIVE PERIOD OF SAID TUBE; A CONTROL GRID NORMALLY BIASED TO A VOLTAGE PREVENTING CURRENT FLOW THROUGH SAID TUBE; A WAVEFORM GENERATOR FOR GENERATING A RECTANGULAR WAVEFORM; CIRCUIT MEANS RECEPTIVE OF SAID RECTANGULAR WAVEFORM FOR GENERATING A TRAPEZOIDAL WAVEFORM HAVING A SIMULTANEOUS TIME DURATION; MEANS FOR COUPLING SAID TRAPEZOIDAL WAVEFORM TO SAID CONTROL GRID, SAID TRAPEZOIDAL WAVEFORM HAVING A SHARPLY RISING WAVEFRONT TO INITIATE CURRENT FLOW THROUGH SAID HIGH POWER VACUUM TUBE BY OVERCOMING SAID BIAS, WHEREBY SAID CAPACITOR WILL BE DISCHARGED AT A RATE DEPENDENT UPON THE CURRENT FLOW THROUGH SAID TUBE; SAID TRAPEZOIDAL WAVEFORM ALSO HAVING A LINEARLY INCREASING VOLTAGE MAGNITUDE TO REDUCE THE IMPEDANCE OF SAID TUBE DURING CONDUCTION THEREOF AS A FUNCTION OF THE DISCHARGING OF SAID CAPACITOR FOR MAINTAINING A CONSTANT CURRENT FLOW THROUGH SAID TUBE DURING DISCHARGE OF SAID CAPACITOR, THEREBY PROVIDING AT SAID ANODE A LINEARLY DECREASING OUTPUT SWEEP VOLTAGE HAVING A VOLTAGE VARIATION ON THE ORDER OF 3,000 VOLTS; CIRCUIT MEANS COUPLING SAID OUTPUT SWEEP VOLTAGE TO THE DEFLECTION PLATES OF THE IMAGE CONVERTER DEVICE; FRAMING CIRCUIT MEANS INCLUDING VOLTAGE STABILIZING MEANS FOR GENERATING A RECTANGULAR GATING WAVEFORM OF A PREDETERMINED AMPLITUDE AND TIME DURATION, SAID FRAMING CIRCUIT MEANS BEING TRIGGERED BY THE INITIAL POTENTIAL OF SAID RECTANGULAR WAVEFORM TO OPERATE DURING A SUBSTANTIAL PORTION OF THE TIME DURATION OF SAID OUTPUT SWEEP VOLTAGE; AND IMPEDANCE MATCHING MEANS FOR COUPLING SAID RECTANGULAR GATING WAVEFORM TO THE GATING GRID OF THE IMAGE CONVERTER DEVICE TO ENHANCE CONDUCTANCE OF A FOCUSABLE ELECTRON IMAGE DURING RECEIPT OF SAID OUTPUT SWEEP VOLTAGE BY THE IMAGE CONVERTER DEVICE.
Claim 2
Dependent Claim
315 words
A VOLTAGE CONTROL ARRANGEMENT FOR AN IMAGE CONVERTER TUBE DEVICE HAVING A GATING GRID AND DEFLECTION PLATES, COMPRISING: A MULTI-ELEMENT GRID CONTROLLED HIGH POWER VACUUM TUBE; A CAPACITOR CONNECTED BETWEEN AN ANODE OF SAID TUBE AND GROUND TO BE CHARGED TO THE VOLTAGE APPEARING AT THE ANODE; MEANS FOR CHARGING SAID CAPACITOR DURING A NON-CONDUCTIVE PERIOD OF SAID TUBE; A CONTROL GRID NORMALLY BIASED TO A VOLTAGE PREVENTING CURRENT FLOW THROUGH SAID TUBE; A WAVEFORM GENERATOR FOR GENERATING A RECTANGULAR WAVEFORM; CIRCUIT MEANS RECEPTIVE OF SAID RECTANGULAR WAVEFORM FOR GENERATING A TRAPEZOIDAL WAVEFORM HAVING A SIMULTANEOUS TIME DURATION; MEANS FOR COUPLING SAID TRAPEZOIDAL WAVEFORM TO SAID CONTROL GRID, SAID TRAPEZOIDAL WAVEFORM HAVING A SHARPLY RISING WAVEFRONT TO INITIATE CURRENT FLOW THROUGH SAID HIGH POWER VACUUM TUBE BY OVERCOMING SAID BIAS, WHEREBY SAID CAPACITOR WILL BE DISCHARGED AT A RATE DEPENDENT UPON THE CURRENT FLOW THROUGH SAID TUBE; SAID TRAPEZOIDAL WAVEFORM ALSO HAVING A LINEARLY INCREASING VOLTAGE MAGNITUDE TO REDUCE THE IMPEDANCE OF SAID TUBE DURING CONDUCTION THEREOF AS A FUNCTION OF THE DISCHARGING OF SAID CAPACITOR FOR MAINTAINING A CONSTANT CURRENT FLOW THROUGH SAID TUBE DURING DISCHARGE OF SAID CAPACITOR, THEREBY PROVIDING AT SAID ANODE A LINEARLY DECREASING OUTPUT SWEEP VOLTAGE HAVING A VOLTAGE VARIATION ON THE ORDER OF 3,000 VOLTS; CIRCUIT MEANS COUPLING SAID OUTPUT SWEEP VOLTAGE TO THE DEFLECTION PLATES OF THE IMAGE CONVERTER DEVICE; FRAMING CIRCUIT MEANS INCLUDING VOLTAGE STABILIZING MEANS FOR GENERATING A RECTANGULAR GATING WAVEFORM OF A PREDETERMINED AMPLITUDE AND TIME DURATION, SAID FRAMING CIRCUIT MEANS BEING TRIGGERED BY THE INITIAL POTENTIAL OF SAID RECTANGULAR WAVEFORM TO OPERATE DURING A SUBSTANTIAL PORTION OF THE TIME DURATION OF SAID OUTPUT SWEEP VOLTAGE; AND IMPEDANCE MATCHING MEANS FOR COUPLING SAID RECTANGULAR GATING WAVEFORM TO THE GATING GRID OF THE IMAGE CONVERTER DEVICE TO ENHANCE CONDUCTANCE OF A FOCUSABLE ELECTRON IMAGE DURING RECEIPT OF SAID OUTPUT SWEEP VOLTAGE BY THE IMAGE CONVERTER DEVICE.
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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |