Abstract: A process and apparatus for the non-destructive checking of the condition of a metal reinforcement element of magnetic material in a tire (11) whereinthe metallic reinforcement element is subjected to a magnetic field in order to magnetize it;relative movement is produced between the metallic reinforcement element of the tire (11) and at least one conductor (31) of a detecting device (30) placed opposite the metallic reinforcement element in such a manner than any variation in magnetization of the element produces an electromotive force in the conductor (31);the electromotive force is detected in order to obtain information as to the condition of said magnetized metallic reinforcement element.

Abstract: A process for recapping tires with a pre-molded, pre-vulcanized tread (2) uses a device for measurement of the travelling length of the tread (2). This device includes a stop (5) which moves on a guide track (6) connected to an endless notched belt (7) held in place by two pulleys (8) and (9), a motor (10), and an optical coder (11). During the entire installation phase of the tread (2) on the casing (21), the stop (5) generates a slight force on the free end of the tread placed on a preparation table (3) incorporating rollers (4).