An apparatus for mounting and demounting a tyre relative to a corresponding wheel rim, wherein the apparatus includes: a wheel-holder unit, configured to receive and lock the wheel at an operating position and to set it in rotation about an axis of rotation; a plurality of tools, configured to interact with the tyre to mount and/or demount the tyre; a hydraulic circuit comprising a pump; a plurality of hydraulic actuators, connected to the hydraulic circuit; the hydraulic circuit is configured to drive the actuators of the plurality of actuators synchronously

In a device (1) for clamping a rim (2) of a vehicle wheel, at least four clamping elements (3) are provided which can be moved with respect to the rim (2) and comprise clamping arms (5) and support elements (7) having support surfaces (6). A rim flange of the rim (2) can be placed on the support surfaces. The clamping arms (5) are rotatably mounted, about their longitudinal axis, in the clamping elements (3), and have clamping fingers (8) at the end that protrude beyond the support surfaces (6), which fingers have clamping surfaces which can be brought into clamping contact with the placeable rim flange.

A tire changer machine, and method of operation, configured with a tire-engaging wheel clamp assembly to secure a wheel assembly consisting of a wheel rim and tire mounted thereon to a drive assembly, and for demounting of the tire from the wheel rim. Upon dismounting of the tire from the wheel rim, a recessed surface and annular flange of the tire-engaging wheel clamp assembly is configured to catch and retain a rim or bead of the demounted tire, restricting movement of the tire upon dismounting from the wheel rim, until retrieved by an operator.

In a device (1) for clamping a rim (2) of a vehicle wheel, at least four clamping elements (3) are provided which can be moved with respect to the rim (2) and comprise clamping arms (5) and support elements (7) having support surfaces (6). A rim flange of the rim (2) can be placed on the support surfaces. The clamping arms (5) are rotatably mounted, about their longitudinal axis, in the clamping elements (3), and have clamping fingers (8) at the end that protrude beyond the support surfaces (6), which fingers have clamping surfaces which can be brought into clamping contact with the placeable rim flange.

The present invention regards a group for supporting and tightening a rim of or for a tired wheel, and such group includes a base, a wheel-holder table, an upright or column projecting upward from the base and supporting at the top the wheel-holder table, a shaft or pin mounted in or alongside the upright or column, a sleeve element or ring nut element constrainable or mountable on the shaft or pin and means for the relative movement of the shaft or pin and of the table.

A chucking apparatus for positioning a tire in a tire uniformity machine includes an upper chuck assembly, a lower chuck assembly operative with the upper chuck assembly to capture a tire therebetween, and a dual piston cylinder coupled to the lower chuck assembly which moves the tire into engagement with the upper chuck assembly. The dual piston cylinder has an axially extending inner piston rod from which axially extends a field-replaceable inner piston stem.

A wheel clamping system, for reversibly clamping a motor vehicle wheel with a rim onto a wheel servicing machine, includes a handle for acting on a rim of the wheel mounted on a rotatable spindle. The handle has a coupling surface for engaging with clamping jaws of a pull rod when the clamping jaws are open. The handle includes a force detecting device for determining an amount of force exerted by the handle on the rim of the wheel, and a signal emitter operatively connected to the force detecting device. The signal emitter is configured to wirelessly transmit a control signal to a signal receiver of the wheel balancer operatively connected to an actuator causing axial movement of the pull rod when the determined amount of force reaches a predefined threshold, such that the actuator is actuated and the wheel clamping system performs a reversible clamping operation.

A chucking apparatus for positioning a tire in a tire uniformity machine includes an upper chuck assembly, a lower chuck assembly operative with the upper chuck assembly to capture a tire therebetween, and a dual piston cylinder coupled to the lower chuck assembly which moves the tire into engagement with the upper chuck assembly. The dual piston cylinder has an axially extending inner piston rod from which axially extends a field-replaceable inner piston stem.

A tire changer machine, and method of operation, configured with a tire-engaging wheel clamp assembly to secure a wheel assembly consisting of a wheel rim and tire mounted thereon to a drive assembly, and for demounting of the tire from the wheel rim. Upon dismounting of the tire from the wheel rim, a recessed surface and annular flange of the tire-engaging wheel clamp assembly is configured to catch and retain a rim or bead of the demounted tire, restricting movement of the tire upon dismounting from the wheel rim, until retrieved by an operator.

A wheel service machine (100) includes: a shaft (30) rotating abut its own longitudinal axis (A); an abutment element (40) for coming into abutment against the rim (C) supported by the shaft (30); a locking device (50) movable on the shaft (30) between an active position and a spaced-apart position; a clamping element (90) to clamp the locking device (50) and the shaft (30) to each other; a drive mechanism (60) for driving the clamping element (90); a command signal receiver (70), configured to drive the drive mechanism (60) responsive to a command signal; an emitter (80), to generate and emit the command signals; a manually transportable drive unit (1), configured to be movably rested on a supporting surface and including a control member (2), movable between an inactive position and an active position, and the emitter (80), which is connected to the control member (2) to generate the command signal responsive to the movement of the control member (2) from the inactive position to the active position.