Conducting data take-off pencil
First Claim
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7. A DATA CONDUCTING SURFACE FOR OVERLAYING A CATHODE RAY TUBE CO-ORDINATE DISPLAT OF RADAR TARGETS TO TAKE DATA THEREFROM BY AN ELECTRICALLLY CONDUCTIVE DATA TAKE-OFF PENCIL COMPRISING:
- A SQUARE SHEET OF ELECTRICALLY CONDUCTIVE TRANSPARENT MATERIAL HAVING A PREDETERMINED RESISTANCE IN ALL LINEAR DIRECTIONS TO ELECTRICAL CONDUCTION;
A PLURALITY OF STRAIGH, PARALLEL GRID CONDUCTORS EXTENDING FROM UPPER TO LOWER PERIPHERIES OF SAID SQUARE SHEET TO ESTABLISH FIXED EQUIPOTENTIAL LINES, SAID GRID CONDUCTORS EACH HAVING A RESISTANCE PER UNIT LENGTH LESS THAN THAT OF SAID SHEET;
AN ALTERNATING CURRENT VOLTAGE APPLIED ACROSS SAID UPPER AND LOWER ENDS OF SAID GRID CONDUCTORS THROUGH DIRECT CURRENT BLOCKING CAPACITORS TO ESTABLISH A SUBSTANTIALLY LINEARLY VARYING ALTERNATING CURRENT FIELD FROM HIGH POTENTIAL TO LOW POTENTIAL BETWEEN THE UPPER AND LOWER PERIPHERIES OF SAID SHEET;
AND A DIRECT CURRENT VOLTAGE
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7 Claims
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7. A DATA CONDUCTING SURFACE FOR OVERLAYING A CATHODE RAY TUBE CO-ORDINATE DISPLAT OF RADAR TARGETS TO TAKE DATA THEREFROM BY AN ELECTRICALLLY CONDUCTIVE DATA TAKE-OFF PENCIL COMPRISING:
- A SQUARE SHEET OF ELECTRICALLY CONDUCTIVE TRANSPARENT MATERIAL HAVING A PREDETERMINED RESISTANCE IN ALL LINEAR DIRECTIONS TO ELECTRICAL CONDUCTION;
A PLURALITY OF STRAIGH, PARALLEL GRID CONDUCTORS EXTENDING FROM UPPER TO LOWER PERIPHERIES OF SAID SQUARE SHEET TO ESTABLISH FIXED EQUIPOTENTIAL LINES, SAID GRID CONDUCTORS EACH HAVING A RESISTANCE PER UNIT LENGTH LESS THAN THAT OF SAID SHEET;
AN ALTERNATING CURRENT VOLTAGE APPLIED ACROSS SAID UPPER AND LOWER ENDS OF SAID GRID CONDUCTORS THROUGH DIRECT CURRENT BLOCKING CAPACITORS TO ESTABLISH A SUBSTANTIALLY LINEARLY VARYING ALTERNATING CURRENT FIELD FROM HIGH POTENTIAL TO LOW POTENTIAL BETWEEN THE UPPER AND LOWER PERIPHERIES OF SAID SHEET;
AND A DIRECT CURRENT VOLTAGE
- A SQUARE SHEET OF ELECTRICALLY CONDUCTIVE TRANSPARENT MATERIAL HAVING A PREDETERMINED RESISTANCE IN ALL LINEAR DIRECTIONS TO ELECTRICAL CONDUCTION;
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Current AssigneeFrancis T. Thompson
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Original AssigneeFrancis T. Thompson
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InventorsThompson, Francis T.
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Application NumberUS04/157,331Time in Patent Office673 DaysField of SearchUS Class Current342/176CPC Class CodesG01S 7/06 Cathode-ray tube displays o...
