Measuring and testing – Tire – tread or roadway
Reexamination Certificate
2005-01-04
2005-01-04
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Tire, tread or roadway
C324S558000
Reexamination Certificate
active
06837102
ABSTRACT:
An apparatus for detecting a flaw in a tire includes a voltage generator producing a high voltage pulse on an electrical conductor. The electrical conductor is oriented with respect to the tire to establish an electric field within the tire. Relative motion between the tire and the electrical conductor occurs such that an electric arc extends from the electric field through a flaw when a flaw is proximate the electric field. A flaw detection circuit is capacitively coupled to the electrical conductor and receives a signal indicative of a voltage signal on the electrical conductor. The circuit further includes means for determining if the frequency of the received signal is greater than a predetermined threshold frequency, and if so, producing an indicator signal indicating the presence of the flaw.
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Allen Andre
Lefkowitz Edward
Patterson Thuente Skaar & Christensen P.A.
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