Research/Patents/US 4990852
US 4990852

AUTOMATIC CLASSIFIER FOR ELECTRIC WIRE DETECTOR

Assignee

Filed

Sep 7, 1973

Granted

Feb 5, 1991

Location

FL US

Abstract

Object detecting and classifying apparatus is disclosed wherein signals, ulting from electromagnetic coupling between a search unit and an elongated, narrow, conductive object, are processed so as to provide automatic indication of detection of an object of the type mentioned. The apparatus discriminates against false indications from background and spurious signals and against signals from objects of other types by utilizing search unit means that produces successive signals having predetermined time relation to one another only when an object of the class sought is crossed, together with signal processing logic means responsive thereto, and recording and/or indicating means responsive to the logic means.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Sep 10, 1982

Rescinded

Sep 20, 1990

Duration

8 years

Inventor

  • 1JAMES L. KIRKLAND

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records