Patent ID: 7740043

Claim:
Tyre changer apparatus comprising: a horizontally extended frame; a wheel holder device provided on said frame and designed to support a tyred wheel with horizontally positioned wheel axis; a carriage supported movably along the frame; a tool holder provided on the carriage; at least one tyre changing tool for mounting the tyre onto the wheel and/or for demounting the tyre from the wheel; and actuator means to move the tool holder on the carriage to operating positions in which the tyre changing tool is able to act on the tyre for mounting or demounting on both sides of the tyre, wherein during the mounting operation or demounting operation the carriage is driven by an actuator device along the frame, and the tool holder is movably supported on a tool holder carriage which is movably supported on said carriage and driven by an additional actuator device provided on said carriage, wherein said additional actuator device is in drive connection with the tool holder carriage via a mechanical speed-increasing transmission.