A multi-chamber tire, comprising an outer layer portion and an flexible ring body in an annular fashion; the outer layer portion is arranged on the external side of the flexible ring body; the flexible ring portion is provided with chambers arranged around the flexible ring portion; the chambers are provided with a plurality of partitioned gussets; each of the partitioned gussets is arranged around the flexible ring body and extends along the axial and radial directions, and the plurality of partitioned gussets are arranged around the flexible ring body alternately, dividing the chambers into a plurality of isolating chambers isolated from each other.

A wheel provided with a tire in tire installation in which an outer ground engaging tire is mounted on a rim of the wheel and an inner inflatable member is mounted on the rim inside the outer tire. The inner surface of the outer tire and the outer surface of the inner inflatable member are provided with respective electrically conductive members suitably in the form of induction loops. A controller determines when the respective electrically conductive members come into close proximity or contact, enabling manual or automated adjustment of air pressure to minimize abrasion between the outer tire and inner inflatable member.

A wheel provided with a tire in tire installation in which an outer ground engaging tire is mounted on a rim of the wheel and an inner inflatable member is mounted on the rim inside the outer tire. The inner surface of the outer tire and the outer surface of the inner inflatable member are provided with respective electrically conductive members suitably in the form of induction loops. A controller determines when the respective electrically conductive members come into close proximity or contact, enabling manual or automated adjustment of air pressure to minimize abrasion between the outer tire and inner inflatable member.

A control circuit includes a controlled pressure line, connectable to a compressor, a first line, connectable to the controlled pressure line and connected to the first volume for introducing air inside the first volume, and a second line, connectable to the controlled pressure line and connected to the second volume for introducing air inside the second volume. The control circuit also includes a first spool valve, which is a three way-two positions valve, configured to switch from a first position to a second position if the pressure in the first volume exceeds a predetermined pressure.

A control circuit includes a controlled pressure line, connectable to a compressor, a first line, connectable to the controlled pressure line and connected to the first volume for introducing air inside the first volume, and a second line, connectable to the controlled pressure line and connected to the second volume for introducing air inside the second volume. The control circuit also includes a first spool valve, which is a three way-two positions valve, configured to switch from a first position to a second position if the pressure in the first volume exceeds a predetermined pressure.

A valve for air chambers includes a fixed body and a mobile selector body, wherein the mobile selector body is disposed coaxially in the fixed body. The mobile selector body is configured to slide with respect to the fixed body. The mobile selector body has a first position of use, associated during use to at least a first outlet, and a second position of use, associated during use to at least a second outlet.

A valve for air chambers includes a fixed body and a mobile selector body, wherein the mobile selector body is disposed coaxially in the fixed body. The mobile selector body is configured to slide with respect to the fixed body. The mobile selector body has a first position of use, associated during use to at least a first outlet, and a second position of use, associated during use to at least a second outlet.

A pressure safeguard device (1) for wheels filled with compressed gas comprises at least two tubes which are arranged next to one another in such a way as to run around the tire axis, each of said tubes having a supply line (3) for compressed gas and a common supply connection (4). On each supply line (3), a connectable and releasable connection is formed between the tube (2) and the common supply connection (4). Preferably, the tubes (2) are releasably connected, by means of a connection device (5, 6) which is separate from the tire, so as to form a stack of tubes (2) which directly adjoin one another along their circumference by way of side regions. If one tube (2) is damaged, the other tubes (2) remain intact and expand together into the entire area between the rim (7) and the tire (8). By topping up the intact tubes with compressed gas, the desired tire pressure can be achieved without changing the wheel or the tire.

A pressure safeguard device (1) for wheels filled with compressed gas comprises at least two tubes which are arranged next to one another in such a way as to run around the tire axis, each of said tubes having a supply line (3) for compressed gas and a common supply connection (4). On each supply line (3), a connectable and releasable connection is formed between the tube (2) and the common supply connection (4). Preferably, the tubes (2) are releasably connected, by means of a connection device (5, 6) which is separate from the tire, so as to form a stack of tubes (2) which directly adjoin one another along their circumference by way of side regions. If one tube (2) is damaged, the other tubes (2) remain intact and expand together into the entire area between the rim (7) and the tire (8). By topping up the intact tubes with compressed gas, the desired tire pressure can be achieved without changing the wheel or the tire.

A multi air chamber tire 1 includes a partition wall 30 configured to define and form a plurality of air chambers 20 disposed adjacent to each other in an inner cavity of a tire, and a ventilation member 10 provided to the partition wall 30, and configured to connect the plurality of air chambers 20 in a state where ventilation is allowed. The ventilation member 10 allows ventilation between the plurality of air chambers 20 when a predetermined condition is satisfied indicating that fluid is being injected into at least one of the plurality of air chambers 20 from outside of the tire, and the ventilation member 10 shuts off the ventilation between the plurality of air chambers 20 when the predetermined condition is not satisfied.