United States Patent
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[19]
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[11]
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Patent Number:
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5,516,113
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Hodge
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[45]
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Date of Patent:
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May 14,1996
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[54] RESISTIVE MATRIX TARGETING SYSTEM 4,786,058 11/1988 Baughman ....................... 273/371
5,419,565 5/1995 Gordon et al .................. 273/371 X
[76] Inventor: Robert B. Hodge, P.O. Box 428,
Greenfield, N.Y. 12833 OTHER PUBLICATIONS
"Gauss and Gauss-Jordon Methods" pp. 98-104 Publication
[21] Appl. No.: 410,741 date unknown.
[22] Filed: Mar. 27, 1995 Primary Examiner-William H. Grieb
Attorney, Agent, or Firm-Milton S. Gerstein
[51] Int. Cl.6 .................... F41J 5/04
[52] U.S. Cl. ............... 273/371; 178/20 [57] ABSTRACT
[58] Field of Search .......... 273/371, 372,
273/373 The invention is a target system capable of determining
projectile entrance by detecting loss resistors formed by a
[56] References Cited graphic colloidal suspension coating of conductive ink
placed beneath a graphic target. The target is a low cost sheet
U.S. PATENT DOCUMENTS of flexible paper positioned by use of a tractor feeder. Actual
3,580,579 5/1971 Scharz et al .. 273/373 loss of resistors is interpreted by a microprocessor running
3,602,510 8/1971 Knippel ....... 273/371 a grid simulation program. Upon loss of any one particular
3,656,056 4/1972 Dalzell, Jr .. 324/65 R resistor, the microprocessor interprets the target to determine
3,705,725 12/1972 Thalmann ...... 273/373 what resistors remain thereby providing a history of projec-
3,854,722 12/1974 Ohlund et al .. 273/373 tile penetration. The results of the target penetration can be
4,204,683 5/1980 Flippini et al 273/371 viewed from a remote video display terminal.
4,240,640 12/1980 LaMura ........ 273/373
4,563,005 1/1987 Hand et al .. 273/371 X
4,659,090 4/1987 Kustmovich .... 273/376 20 Claims, 6 Drawing Sheets
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