Abstract: A pneumatic tire for a high speed under a heavy load is disclosed. In order to effectively refrain a crown radius of curvature of the tire from decreasing due to a centrifugal force, the tire is constructed as follows. The tire comprises a case reinforcing layer composed of a plurality of carcass plies mainly formed of organic textile cords inclined at an angle of at most 45.degree. to the circumferential direction of the tire and a plurality of reinforcing fabrics whose material and inclined angle to the circumferential direction of the tire are substantially the same as those of the cords of the carcass ply and interposed between the carcass plies. The plurality of reinforcing fabrics extend from those positions which are distant apart from one of bead portions through a tire crown portion and terminating at those positions which are distant apart from the other bead portion. The number of the reinforcing fabrics is at least 20% of the total number of both the carcass plies and the reinforcing fabrics.

Abstract: A giant radial tire for off-road vehicles which is obliged to be used under heavy load and which is provided with a highly durable bead portion construction in which that end of the wire cords of the turn-up portion or reinforcing layer which is located below the maximum width position of the tire and disposed outside the bead core is arranged at the position which is higher than the height h of the rim flange of a bead portion mounting rim but lower than the height which is three times higher than the above height h, and the outer coating rubber of the bead portion has a thickness distribution satisfying the following condition given by0.30.ltoreq.(B.multidot.C/A.sup.2).times.(RW/SW).ltoreq.0.55whereRW is a width between bead legs of the tire mounted on the rim,SW is a maximum width between side portions of the tire mounted on the rim,A is a bead portion reference width,B is a minimum thickness of the rubber at the bead portion, andC is a maximum thickness of the rubber at the bead portion.

Abstract: A stitcher for a tire building machine having multiple discs disposed in concentric laminated relationship for relative movement in the radial and circumferential directions. The discs have a central opening in which a central supporting member is rotatably supported on a stitcher shaft. A plurality of circumferentially spaced cylindrical cushioning members are positioned between the central supporting member and the discs for resiliently accommodating relative radial movement of the discs when stitching tire surfaces of different radii. The central supporting member may have radially extending curved arms to separate and support the cylindrical cushioning members. The outer shell of the cushioning members may be of wear-resistant material in sliding engagement with the discs so that during relative rotational movement of said discs there will be a minimum amount of wear of the cushioning members and discs.

Abstract: A belted tire of split carcass construction. A first reinforcing ply extends from a first bead through a first sidewall and into the crown portion past the mid-circumferential plane of the tire. A second reinforcing ply extends from a second bead through a second sidewall and into the crown portion past the mid-circumferential plane of the tire between the first ply and the belt structure and beyond the belt structure to a location radially outwardly of the mid-section height of the tire where it is redirected 180 degrees. The redirected portion of the second ply, in accordance with an aspect of the invention, is disposed in at least partially overlapping relation with the belt structure and is disposed radially outwardly of the belt structure to at least partially encapsulate the belt structure.

Abstract: A compression sidewall tire reinforced for operation while deflated. A pair of junction portions connect the sidewalls and shoulders. Each of the shoulders extends axially outward and radially inward from the tread, and each of the sidewalls extends axially outward and radially outward from the mounting portions. The sidewalls are constrained against outward expansion by the rim and junction portions. The shoulders are reinforced with a plurality of circumferentially spaced ribs to resist movement toward the ground when the tire is deflated and under normal load. A circumferentially continuous rib may also be positioned on the exterior surface of each junction portion to further reinforce the tire.

Abstract: A tire (10) produced via a molding or casting process in a manner such that each of its bead areas (16) includes an annular slot (42) whereby the slots permit the insertion of an inextensible annular reinforcement element (40) into each of the bead area slots (42) after the molding or casting process. Slots (42) are preferably produced by the addition of annular collars (64) to either the outer member (50) or core member (60) of an improved molding or casting die (48). The improved molding or casting process includes a step of forming a circumferential slot (42) in each tire bead area (16), with these slots (42) permitting the addition of an inextensible annular reinforcement element (40) into each bead area (16) after the molding or casting process.

Abstract: A tubeless pneumatic tire comprising a body made entirely of an elastic material and cords embedded in the body and having a length not extending from bead to bead. The opposite ends of the cords are disposed in a pair of annular projections formed on the inner surface of the tire and centered about the axis of rotation of the tire. An elastic deformable portion is provided between each of the beads and the corresponding ends of the cords.

Abstract: A tire with a reinforcing belt structure comprising three plies. The inner and outer plies each have a main body portion and a single folded end portion. The main body portions of the inner and outer plies have substantially the same width. The cords of the inner and outer plies have the same orientation with respect to the mid-circumferential centerplane of the tire. The folded end portion of each of the inner and outer plies is disposed radially outwardly of its respective main body portion. The inner and outer plies are arranged in such a way that the unfolded lateral end portion of the main body ply of the radially outer ply is enclosed by the bight of the radially inner ply. A middle unfolded ply is interposed between the main body portion of the inner and outer plies and comprises cords which are oriented with respect to the mid-circumferential centerplane of the tire in the direction opposite to the cords of the adjacent folded plies.

Abstract: A toroidal insert for an inflated, tubeless, pneumatic tire. The insert comprises a preformed torus-like core, tire cord radially wound around the torus-like core, and at least one load bearing member having tire cord therein, said member being circumferentially wound around substantially the middle one third of the radially outer surface of the radially wound tire cord. The insert, when situated within the inflated tire, includes a cross-section having a thick, substantially oval, central portion extending between the beads of the inflated tire and a pair of thin end portions each extending from its respective side of the thick, oval, central portion along the adjacent sidewall of said inflated tire to about the midpoint of said adjacent sidewall, whereby, when the tire is deflated, the thick, oval, central portion of the insert supports the tread portion of the deflated tire and each of the thin end portions of the insert lies between and supports the adjacent, collapsed sidewall of the deflated tire.

Abstract: A pneumatic vehicle tire including a carcass, particularly a radial carcass, a tread, and a belt-like reinforcement formed of at least two cord plies radially superimposed one above the other. At least one of the plies has rubberized metallic cord elements, and the other suitably has non-metallic cord elements. The cord elements cross each other from ply to ply, and the width of at least one cord ply is approximately equal to the width of the tread. The metallic cord elements, which particularly are made of brass-plated steel wire, further comprise a core and a mantle of wire, with the mantle including several twisted individual wires of equal size. The metallic cord elements in the cord ply comprise a core of a single wire filament, and a mantle comprising at least three single wire filaments. The mantle wire filaments respectively have a part which radially engages the wire filament of the core.

Abstract: A structure for a radial tire for trucks and buses having textile cords in its carcass ply layer and steel cords in its belt layer is disclosed. The tire of this invention has a tread angle within a certain range, which angle is taken such as to be constituted by a line directed from a width-end point of the tire to a width-end point of the tread and a line directed from the width-end point of the tread in the straight vertical direction. More specifically, the ratio of the width of the tread to the width of the tire is so arranged that the tread angle with full air pressure be 17.degree..+-.3.degree. and the difference between the tread angle with full air pressure and the tread angle with an air pressure of 0.5 kg/cm.sup.2 be 3.degree. or less.

Abstract: A safety tire and wheel assembly for pneumatic tires which includes a safety insert having an inner portion extending around the wheel rim base for clamping the tire bead toes against the opposing rim flanges and an outer portion projecting radially into the tire cavity. A band of resilient material such as rubber is carried by a circumferential array of bearing elements in a depression formed on the outer surface of the core outer portion for supporting the tire tread with respect to the wheel rim upon loss of tire inflation pressure. The wheel includes a two-piece rim comprising a first rim portion welded to a wheel disc and a demountable rim portion mounted by the circumferential array of clamps to the fixed rim portion. A sealing ring is disposed between the rim portions for sealing the tire cavity for tubeless operation.

Abstract: Disclosed is a high hardness rubber composition having a hardness of at least 92, which comprises 100 parts by weight of a rubber, 55 to 95 parts by weight of soft black having an average particle size of 40 to 80 millimicrons, 5 to 30 parts by weight of a thermosetting resin and a small amount of a curing agent, the sum of the amounts of the soft black and thermosetting resin being 60 to 100 parts by weight per 100 parts by weight of the rubber.This high hardness rubber composition is advantageously used as a tire reinforcement for the rim cushion portion or for both the rim cushion portion and bead filler.

Abstract: A belted pneumatic tire having an annular bandage-like reinforcing insert including a cord layer made of pull-resistant threads, strands and the like and extending in the peripheral direction of the tire. The insert extends essentially over the width of the tread between the tread and the carcass. The reinforcing insert includes one or more peripheral segments which are joined together into a ring or annular body having an overlapping area extending at an incline to the peripheral direction of the tire. The overlapping area includes segments rising to the left and right of a center line and joined symmetrically by a V-shaped connection, zig-zag-shaped connection, or wave-shaped connection.

Abstract: A pneumatic tire and wheel rim assembly is disclosed in which the rim bead seats are defined by grooves having radially directed side portions which retain the associated tire bead against movement in an axial direction and each rim bead seat includes means in engagement with the tire bead to restrict rotation of the tire bead relative to the bead seat. Preferably said means comprises a plurality of projections formed integrally with part or all of the grooves which engage the associated tire bead to restrict rotation. Each projection may comprise a circumferentially extending rib or a tooth.

Abstract: An inner air-tube of a tire for bicycle, particular for racing cycle substantially composed of a thermoplastic urethane resin of a specific type. The urethane resin is comprised of a bifunctional polyol, a diisocyanate and a diol serving as a chain-propagating agent, the ratio by mole of the diisocyanate to a mixture of the bifunctional polyol and the diol being in the range of 1.05-1.10:1. The urethane resin of this type is readily after-crosslinked to improve its physical properties to a great extent.

Abstract: This invention is directed to a method, a rubber skim stock and a product containing the skim stock having improved adhesion between a metal member and contiguous rubber skim stock. The invention lies in the discovery that improved rubber-to-metal adhesion can be obtained by adding to an otherwise conventional rubber skim stock composition appropriate amounts of a tetracarboxylic dianhydride.The method of this invention comprises the steps of mixing a tetracarboxylic dianhydride into a rubber composition, bringing this composition into contiguous relationship with a metal member in an unvulcanized product and vulcanizing the product to yield the end product.

Abstract: A binding machine for the application of a strip of flexible material around the outline of thin articles, particularly for edging parts for boots and shoes, comprising a fork with an alternating movement for folding the strip partly above and partly below the outline of a thin article, means for causing adhesive to be placed between the said strip and the said article, and a pressure and transportation group for the intermittent pressing of the strip against the article, after the folding operation performed by said fork, and for sending said article forward as it has been edged, said pressure and transportation group comprising a hammer shaped part and an anvil shaped part mounted on a hollow shaft oscillating about its axis, which parts are caused to move the one towards the other and vice versa by a rod placed in the hollow shaft and movable in a reciprocating way.

Abstract: A tire-bead structure for a tubeless tire, especially for trucks and other heavy vehicles, having a steep-shoulder felly on the wheel which can be inclined outwardly at an angle of about 15.degree. to the horizontal, comprises a bead core made up of a plurality of concentric turns of steel band or strip in nesting relationship and bent in an outwardly concave pattern so that at least an axially inward portion of each turn or strip lies at an angle to a radially outward portion thereof.

Abstract: A pneumatic tire including bead members each comprising a slender bead element made of an organic or inorganic fiber other than metallic material and having a high modulus of at least 10.sup.5 kg/cm.sup.2, and a matrix phase made from a liquid thermosetting resin or liquid rubber cured before the bead member is incorporated into the tire to form a composite body together with the fiber. The matrix phase has a modulus of 50 to 10.sup.6 kg/cm.sup.2 after curing. The cured composite body of the bead element and the matrix phase has a stress of at least 200 kg when stretched 1%. The volume fraction of the bead element relative to the bead member is 0.2 to 0.8.