Allen-Bradley Company, LLC

W. H. Brady Co.

Donald L Ness

Robert E Scofield

Richard J Molus

A wiring base for a bar code scanner or the like provides a conductive housing open at one face for connecting cables at various screw terminals to a circuit board providing signal processing for the signals and permitting various different-connections of the cables. The shields of the cables pass into the conductive housing to be terminated on conductive housing thereby enlisting the conductive housing as a shield around all the cables. Attachment of the scanning head to the upper face of the wiring base closes the housing to be free from the egress of dust or liquid and completes a Faraday cage around the connections while connecting two multi-pin connectors one within the base and one within the scanner, communicating the signals to the scanner. A visual indicator attached within the conductive housing indicates the presence of power and its polarity prior to connection of the scanning head to the conductive housing.

Wiring base for photoelectric scanning unit

AC powered flash tube control circuitry includes an energy storage circuit and a firing circuit. The storage and firing circuits are triggered in each flash cycle in separate coordinated sequence in time synchronism with the frequency of the AC source to store energy in a first portion of each flash cycle and to trigger the tube into conduction in a second portion of the flash cycle during which energy from the storage circuit is discharged from the flash tube to produce an output flash of radiation.

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Brown Deer, WI, United States of America

Donald L Ness