A pneumatic tire that rotates about a center axis includes a tread rubber that comprises a contact patch; a groove provided in the tread rubber, the groove having an inner surface that includes a bottom surface and side surfaces that connect the bottom surface to the contact patch; and a coating film disposed covering at least a portion of the inner surface, the coating film reducing exposure of ultraviolet light to the inner surface.

CONSTRUCTIVE ARRANGEMENT OF A FLEXIBLE WHEEL FOR WHEELBARROW OR MANUALLY TRACTIONED INDUSTRIAL CARTS is constituted by a single block that comprehends three parts: the outer ring(1), the center wall(2), and the inner ring(3); and the outer ring(1) has on its extremity a tread surface(15), and as tangents on each side it has side tread surfaces(12); and each side tread surface(12) has a plurality of radial cavities(11) spaced along the wheel; and the radial cavities(11) of a side tread surface(12) are not aligned in relation to the radial cavities(11a) of the opposite side tread surface(12a); and the center wall(2) is a flat, solid, ring-shaped wall contained in the central plane which contains the body of the wheel, and on each side of the flat wall there are a plurality of flexible structures(14) radially aligned to the radial cavities(11) contained in the outer ring(1); and the inner ring(3) is constituted of a circular wall(31), a reinforcement rim(32), and mass reducers(33); and the mass reducers(33) are recesses with radial walls.

A pneumatic tire includes an inner liner including a vulcanized rubber composition such that a number of voids each having a volume of 4.19 μm.sup.3 or more per 8,000,000 μm.sup.3 in the vulcanized rubber composition is 2 or less in an environment of 60° C. under an atmospheric pressure, and that the vulcanized rubber composition has an air permeation coefficient of 0.95×10.sup.−10 cm.sup.3.Math.cm/(cm.sup.2.Math.s.Math.cmHg) or less when measured using a differential pressure method in the environment of 60° C.

The tire (10B) comprises a tread (12) including a running layer (14) which is intended to come into contact with the ground when the tire (10B) rolls on the ground, and a sublayer (16) located radially inwards from the running layer (14). The tread (12) comprises at least one fluid passage (22) between the sublayer (16) and the air surrounding the tire (10B). The sublayer (16) comprises a cellular material. The fluid passage (22) comprises an element chosen from a groove (20) and a cut (26), formed in the running layer (14) and extended by at least one well (28) acting as a radial extension of the element, formed between the groove (20) and/or the cut (26) and the sublayer (16). Each well (28) forms a localized part of the fluid passage (22).

The invention relates to a device for measuring an operating variable, to be fitted onto a tyre, comprising: an electronic circuit distributed over a first face of an electronic board and comprising a sensor; a protective housing at least partially covering the electronic circuit; and at least one first antenna wire having one end galvanically connected to the electronic circuit and integrally extending so as to project laterally from the housing;

According to the invention, the housing comprises a lateral portion which projects substantially tangentially to a proximal end portion of the first wire in accordance with the generatrix of said first wire.

A pneumatic tire includes two plate-like members which have a plurality of through holes formed therein, and are adhered to each other by adhesion portions at least at two positions spaced apart from each other, and a supporting member which is inserted between the two plate-like members between the adhesion portions being adjacent to each other, wherein a part of an outer surface of one of the two plate-like members is attached to an inner surface of a tread portion so that a space is formed between the outer surface of the one of the two plate-like members that are adhered and the inner surface of the tread portion.

A pneumatic tire includes a plate-like member in which a plurality of through holes and slits having both ends positioned within a plate surface are formed, and a supporting member which is inserted into the slits and supports plate-like portions in both sides of the slits in opposite directions to each other, wherein the plate-like member is attached to an inner surface of the tread portion by mounting portions which are respectively positioned closer to an outer side than both ends of the slits, so that a space is formed between the plate-like member and the inner surface of the tread portion.

Identification labels and their incorporation in rubber-based articles are described. The labels include RFID components and can be incorporated in tires. The labels can withstand the relatively harsh conditions associated with vulcanization.

A method is provided for forming an impermeable barrier layer on an inner tire surface of a tire. An assembly is also provided along with a kit for forming an impermeable barrier layer on an inner tire surface of a tire accordingly.

The present invention relates to a tyre (11) having an inner surface (111) and provided with at least one monitoring device (3) adhering to said inner surface (111), wherein said monitoring device (3) is made on a flexible support, and wherein the adhesion of said flexible support to said inner surface (111) is achieved through a decoupling element (4) interposed between said at least one monitoring device (3) and said inner surface (111) of the tyre (11).