Anti slip device for automobile wheels with wheel disc arranged at the inner side lane of the wheel

An anti slip device for an automobile wheel arranged about an axis, the wheel including a wheel disc (3) arranged at an inner side plane of the wheel and a tire (1) surrounding the wheel disc, the anti slip device comprising:

• a loading-bearing part (4) attachable to the wheel disc (3) from an exterior thereof;
• an extensible body (8) slidingly connected to the load-bearing part in a direction parallel to the axis of the wheel;
• a plurality of arms 9 extending directly from said extensible body, each of said arms extending radially outwardly from the axis of the wheel and terminating, at an end thereof distant from said extensible body, in a surface of engagement (10) lying parallel to the axis of the wheel,
• wherein, in a working position of said anti slip device, said surfaces of engagement of said plurality of arms engage a peripheral road-engaging, surface of the tire (1);
• and
• further including a driving assembly, said driving assembly adapted to shift a position of the extensible body (8) and to rotate arms (9);
• wherein said driving assembly comprises a pneumatic driving assembly, including a source (13) of compressed air, bellows (15) for shifting of the extensible body (8), pneumatic motors (16) for turning of arms (9), and control components (14).

An anti slip device for an automobile wheel arranged about an axis, the wheel including a wheel disc (3) arranged at an inner side plane of the wheel and a tire (1) surrounding the wheel disc, the anti slip device comprising:

• a loading-bearing part (4) attachable to the wheel disc (3) from an exterior thereof;
• an extensible body (8) slidingly connected to the load-bearing part in a direction parallel to the axis of the wheel;
• a plurality of arms 9 extending directly from said extensible body, each of said arms extending radially outwardly from the axis of the wheel and terminating, at an end thereof distant from said extensible body, in a surface of engagement (10) lying parallel to the axis of the wheel,
• wherein, in a working position of said anti slip device, said surfaces of engagement of said plurality of arms engage a peripheral, road-engaging, surface of the tire (1),
• wherein each of said arms includes a flat portion extending radially outwardly from the axis of the wheel, and wherein, in said working position of said anti slip device, an inner surface of said flat portion engages a side surface of the tire.