Method for determining the tread depth of a vehicle pneumatic tire
US9834042B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 2014 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Oct 18, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30252
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for determining the profile depth of a tread of a pneumatic vehicle tire wherein the tread has a wear indicator. The wear indicator has an incision extending in the radial direction of the tire. The incision has a length visible on the tread and the length becomes shorter as wear increases. The wear indicator has two reference marks at a distance from each other. The distance is configured to remain constant and visible throughout the tread wear. A photo of the incision and the reference marks is generated via an application program of a mobile phone having a camera and an image screen. A current profile depth is calculated from the distance of the reference marks and the length of the incision via the application program. The current profile depth and/or a remaining profile depth are displayed until a minimal profile depth is reached on the screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.