High-voltage tire testing apparatus

Details High-voltage tire testing apparatus High-voltage tire testing apparatus

1984-03-08

1985-05-28

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 3112

Patent

active

045203075

ABSTRACT:
A high-voltage, non-destructive inspection system for detecting nails, and/or cuts and holes in vehicle tires. The system employs a high-voltage head mounted within the tire and a reference head outside the tire opposite to the high-voltage head. The high-voltage head and reference head span the tire tread axially. The inspection is performed in one revolution of the tire.
High-voltage pulses are impressed upon the high-voltage head, and the amplitude and pulse widths are variably selected, commensurate with the type of tire being tested. When a cut, hole or a nail in the tire passes between the high-voltage head and the reference head, an electric arc forms and current passes through the tire. This arc can be visually observed and also electronically detected. Upon detection, via an electronic detection circuit, a lamp lights and the tire rotation is stopped, thus facilitating location of the flaw, via a manual mode.

REFERENCES:
patent: 1779907 (1930-10-01), Dye
patent: 2503992 (1950-04-01), Becker
patent: 2941144 (1960-06-01), Cannon
patent: 4297876 (1981-11-01), Weiss
patent: 4327579 (1982-05-01), Weiss

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