Magnetic Drive Over System (Dos) Providing Tire Tread Thickness/Depth Measurement
Patent No. EP4042132 (titled "Magnetic Drive Over System (Dos) Providing Tire Tread Thickness/Depth Measurement") was filed by Bridgestone Americas Tire Operations on Oct 7, 2020. The application was issued on Dec 17, 2025.
Patent Summary
A tire tread measurement system comprises a nonmagnetic layer forming a drive-over surface configured to receive a tire. A magnet, featuring opposing first and second magnetic poles, is positioned such that the nonmagnetic layer is situated between the drive-over surface and the magnet, with the first magnetic pole located between the second magnetic pole and the nonmagnetic layer. A magnetic sensor is associated with the magnet, with the nonmagnetic layer also positioned between the drive-over surface and the sensor. The sensor is configured to detect a magnetic field resulting from the interaction of the magnet and the tire on the drive-over surface to determine tread thickness, specifically the rubber thickness outside the steel belts.
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Date
Description
EP4042132
- Application Number
- EP20874564A
- Filing Date
- Oct 7, 2020
- Status
- Granted And Under Opposition
- Nov 14, 2025
- Publication Date
- Dec 17, 2025
- External Links
- Slate, Register , Google Patents