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Language: English
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depth  direction  groove  inner shoulder  inner  outer  pneumatic tire  row  shoulder  tire direction  tire  tread ring  tread 
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DEVICE, A TIRE PRESSURE MEASUREMENT DEVICE, A TIRE, A METHOD AND A COMPUTER PROGRAM TO OBTAIN INFORMATION INDICATING A TREAD DEPTH

Thu, 06 Apr 2017 08:00:00 EDT

Embodiments provide a device, a tire pressure measurement system, a tire, a method and a computer program to obtain information indicating a tread depth of the tire. The device to obtain information indicating a tread depth of a tire of a vehicle comprises a transducer to provide acoustical signals based on electrical signals and vice versa. The device further comprises a control unit, which is coupled to the transducer. The control unit is configured to provide the transducer with a first electrical signal based on which the transducer provides an acoustical transmit signal. The control unit is further configured to obtain a second electrical signal from the transducer. The second electrical signal is based on a reflected version of the acoustical transmit signal. The control unit is further configured to process the second electrical signal to obtain information indicating the tread depth of the tire.



TREAD COMPRISING VOIDS FOR CIVIL ENGINEERING VEHICLE TIRE

Thu, 06 Apr 2017 08:00:00 EDT

The tread has a wearable thickness of material EMU and has raised elements delimited by grooves. Each solid part has a contact face and a cavity with a depth greater than 50% of the wearable thickness. Each cavity opens onto the contact face when new and is delimited by a wall surface and a bottom surface. Each wall surface deliminates a cavity that intersects the contact face along a corner edge contour that has a geometry that has a major axis which is at least 1.5 times the length of a minor axis when new. For any tread surface down to a predefined wear level, the level is at most 30% of the wearable thickness of material EMU, and the angle between the major axis and the circumferential direction is between 0 and 40 degrees. After the wear level, the angle is greater than 40 degrees.



PNEUMATIC TIRE

Thu, 06 Apr 2017 08:00:00 EDT

Groove widths of center main grooves are larger than groove widths of inner and outer main grooves. Plurality of lateral grooves are formed at intervals in a tire circumferential direction so as to define inner shoulder blocks belonging to an inner shoulder row. A first raised portion connecting a pair of inner shoulder blocks to each other is formed in the lateral grooves every one other on an inner main groove side. A depth of the lateral groove in the first raised portion is smaller than the depth of the lateral groove in other portions. A second raised portion is formed on the outer main groove in a region defined by an imaginary line connecting an outer intermediate block and an outer shoulder block. A depth of the outer main groove in the second raised portion is smaller than that of the outer main groove in other portions.



PNEUMATIC TIRE

Thu, 06 Apr 2017 08:00:00 EDT

A block row includes, an inner shoulder row positioned most inside in a tire width direction in a state where a pneumatic tire is mounted on a vehicle, an outer shoulder row positioned most outside in the tire width direction in a state where the pneumatic tire is mounted on the vehicle, an inner intermediate row disposed adjacently to the outside of the inner shoulder row in the tire width direction, and an outer intermediate row disposed adjacently to the inside of the outer shoulder row in the tire width direction. In the block belonging to the inner intermediate row, a tire circumferential direction length is larger than a tire width direction length. In the block belonging to the outer intermediate row, a tire width direction length is larger than a tire circumferential direction length.



NON-PNEUMATIC TIRE

Thu, 06 Apr 2017 08:00:00 EDT

A non-pneumatic tire includes a tread ring having an annular form, a hub positioned on a tire radial direction inner side of the tread ring, and multiple spokes connecting the tread ring and the hub. The tread ring has one or more grooves formed on a ground contact surface such that the groove includes a widened portion having an enlarged groove width and a hole penetrating through the tread ring and formed in the widened portion.



TIRE, VEHICLE MOUNTED WITH SAID TIRE, AND COMMUNICATION CONTROL SYSTEM

Thu, 06 Apr 2017 08:00:00 EDT

A tire having a tread member which has a contact surface made of an elastomer whose viscoelasticity is changed by applying an electric field or a magnetic field, which affords an advantage of enabling control of hysteresis loss near the contact surface of the tread member of the tire.