Measuring and testing – Tire – tread or roadway
Reexamination Certificate
2007-12-04
2007-12-04
McCall, Eric S. (Department: 2855)
Measuring and testing
Tire, tread or roadway
C340S442000
Reexamination Certificate
active
10505215
ABSTRACT:
The present invention provides a tire distortion detecting method, a distortion detector, and a tire which can reduce the occurrence of a deterioration and can be used for a control system such as a stability control system. That is, series of conductors composed of a plurality of conductor pieces101and102are provided in two different layers. The conductor pieces101and102are embedded in lines at predetermined intervals in the circumferential direction of a tire300. A pulsed electromagnetic wave is radiated to the surfaces of metal foils101and102in the layers from a monitoring device200provided in a tire house400of a vehicle. The monitoring device200receives a pulsed electromagnetic wave reflected from the metal foils101and102in the layers or a member other than the metal foils. Time from the radiation of a pulsed electromagnetic wave to the reception of a reflected pulsed magnetic wave is measured repeatedly, time at which no distortion occurs on the tire300is stored as a reference value, and the measured time and the stored reference value are compared with each other to detect a distortion of the tire300.
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International Search Rerport for PCT/JP03/09169 mailed on Nov. 4, 2003.
Knobbe Martens Olson & Bear LLP
McCall Eric S.
Yokohama Rubber Company
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