Method of detecting configuration of tire

Details Method of detecting configuration of tire Method of detecting configuration of tire

1987-06-26

1988-11-15

Woodiel, Donald O.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

G01M 1702

Patent

active

047839929

ABSTRACT:
In a method of detecting an outer configuration of a side wall surface of an inflated tire, a distance between a sensor and the side wall surface is detected in a non-contact manner to derive a displacement signal, the displacement signal is converted into a digital displacement signal and successive peaks of the digital displacement signal are detected. Heights h.sub.n and distances l.sub.n between successive peak points are derived and areas AS.sub.n and BS.sub.n surrounded by the displacement signal and a rectangle whose corners are coincident with adjacent peak points are derived. The heights h.sub.n, distances l.sub.n are areas AS.sub.n, BS.sub.n are compared with threshold values h.sub.R, l.sub.R and AS.sub.R, BS.sub.R, respectively. When h.sub.n >h.sub.R, l.sub.n <l.sub.R and AS.sub.n >AS.sub.R or BS.sub.n >BS.sub.R, a relevant tire is judged to be inferior.

REFERENCES:
patent: 4258567 (1981-03-01), Fisher, III
patent: 4311044 (1982-01-01), Marshall et al.
patent: 4327580 (1982-05-01), Suzuki et al.
patent: 4434652 (1984-03-01), Christie
patent: 4440018 (1984-04-01), Christie
patent: 4475384 (1984-10-01), Christie

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