Vehicle tyre checking system
US8065911B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2005 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Mar 8, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L17/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for assessing the tread on a vehicle tyre, measuring tyre pressure and calculating other parameters such as vehicle weight. The vehicle is driven in a longitudinal direction so that the tyre passes over a first lateral sensor (6) that extends across the footprint of the tyre, the first sensor comprising an array of individual force sensing elements (11), which provide outputs indicative of tyre pressure at points across the footprint of the tyre. The sensing elements are sampled at intervals as the tyre moves over them, so as to build up data relating to the entire footprint of the tyre. The sensing elements are of relatively high resolution to detect areas within the tyre footprint where there is tread cut into the tyre, so that the extent of tread coverage can be assessed. Tyre pressure is also determined. The tyre then passes over a series of second lateral sensors (7) spaced at intervals to assess the tyre around its circumference. The second lateral sensors may be of low resolution, with outputs being compared with each other and with a low resolution sensor (T) adjacent the high resolution sensor to assess whether there is a difference in tyre tread qua…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.