US Patent 7878411 Wheel bearing device and its quality management method
Patent 7878411 was granted and assigned to NTN Corporation on February, 2011 by the United States Patent and Trademark Office.
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To provide a wheel support bearing device, in which the status of actual use is detected and stored as a history, an IC tag (9) capable of a contactless communication is affixed to the wheel support bearing device. This IC tag (9) is rendered to be a sensor incorporated IC tag integrated with or electrically connected with a sensor for detecting an object to be detected of the wheel support bearing device and a detection of the sensor is inputted through an input channel separate from a channel for the contactless communication. The sensor referred to above may be, for example, a coil and a magnet (10) capable of passing in the vicinity of the sensor incorporated IC tag (9) by the effect of a relative rotation.
US Patent 07878411 Wheel bearing device and its quality management method US Patent 7878411 Wheel bearing device and its quality management method
US Patent 07878411 Wheel bearing device and its quality management method
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