Abstract: A method and equipment for manufacturing plastic cards, for example, credit cards and the like from a continuous layup including generally two plastic cover leaves and a printed insert. The plastic leaves to be heat sealed are fed through a plurality of press zones in which the lay-up is heated and subsequently cooled. The feed is performed by means of heat conducting, preferably metallic bands one of which carries pegs centrally disposed along its length which interengages with registration holes in the layup and a cooperating band to drive the bands and layup synchronously thorugh the press zones. Its use is in the mass production of plastic cards.

Abstract: A heavy duty pneumatic tire is disclosed, which comprises a plurality of main grooves extending in a tire circumferential direction, shoulder land portions formed between the main grooves on the shoulder portions and edges of a tread, and a plurality of lateral grooves extending axially inwardly and outwardly in a tire axial direction on the shoulder land portions from the tread edges and spaced at an interval in the tire circumferential direction. The lateral grooves include the tread edges, and consist of two kinds of lateral grooves having different axial distances W.sub.1 and W.sub.2 from the tread edge to axially inward ends of the bottoms of the lateral grooves. An amplitude of the shoulder main grooves is varied corresponding to positions of the respective lateral grooves such that distances L.sub.1 and L.sub.

Abstract: A segmental drum (10) has spaced-apart inflatable turnup bladders (24) for folding each edge (28) of a belt (30) applied to the drum (10). The spacing of the bladders (24) is adjustable by axial movement in opposite directions of central hub assemblies (42,44) threaded on screws (76). Fine adjustment of the spacing to straigten the fold line (32) of each bladder (24) is provided by axial adjustment of rigid polyurethane bladder support brackets (18) connected to the central hub assemblies (42,44). Radial expansion of the segments (16) is provided by links (84) between each of the segments (16) and spaced drum expanding hub assemblies (86,88) threaded on a drum control screw (96). A molded central filler block (62) of rigid polyurethane is mounted on each segment (16) to fill the space between the bladder support brackets (18).

Abstract: A method of obtaining a reinforcing assembly comprising reinforcement threads and a solid matrix is characterized by the fact that reinforcement threads surrounded individually by a sheathing of organic material I and furthermore surrounded by another sheathing of organic material II are grouped together, by the fact that the material II is caused to migrate into voids between the threads sheathed with material I and by the fact that the material II is caused to solidify.

Abstract: A pneumatic tire is improved by use of carcass cords being made from aromatic polyamide fiber and having a twisting angle of 31.3 to 39.3 degree. Durability is much improved.

Abstract: An apparatus is disclosed for producing an ornament for gift wrapping purposes and the like. The ornament has a basic member with a plurality of radially disposed conical elements, and these basic members may be combined to produce spheroidal or hemispheroidal ornaments having a plurality of radial cones or spikes. In the method, a flat circular blank is formed with a plurality of radially disposed leaves. The leaves are wrapped around a conical form and adhesively secured to form one of the basic members. The apparatus includes a winder for wrapping the leaves around the conical form and positioning means for holding the blank and locating each leaf on the form to be wrapped into a conical element by the winder.

Abstract: The turn-up portion (217) of the carcass ply in the bead portion (219) of a pneumatic tire is interposed between the bead core (213) and a clamping member (231). The clamping member (231) comprises a heat shrinkable material that secures the turn-up in a desired location.

Abstract: A pneumatic radial tire arrangement for a vehicle wherein each tire has a belt structure formed of two belt layers respectively made of steel cords and aromatic polyamide fiber cords and which have their edge portions folded back. Each tire is mounted to the vehicle with the folded back portion of the steel cord belt layer located towards the outer side of the vehicle to reduce steering pull during high speed performance of the vehicle.

Abstract: A segmental drum (10) has a plurality of axially extending circumferentially spaced segments (36) with flexible connections (56) to shoulder pistons (32) at opposite ends of each segment (36). Wedge shaped bars (62) are positioned between the segments (36) and connected to center pistons (64) for urging tapered side faces (80) of the bars (62) into engagement with sloping side faces (78) of the segments (36). Elastic turnup bladders (42) are positioned outward of the segments (36) with nose portions (40) overlapping the ends of the segments (36) for resiliently returning the segments (36) and bars (62) to a retracted condition after expansion by radially outward movement of the shoulder pistons (32) and center pistons (64).

Abstract: A safety device for suppporting the wheel of a vehicle that has a flat tire. In a first embodiment, two semiwheels are provided which are connected to the wheel hub by a layer of deformable elastomeric material which absorbs the shock that is generated when weight is transferred from the tire to the safety device. Additional support structure is provided that becomes engaged when sufficient weight is placed on the semiwheel. In a second embodiment, a tire is provided with a membrane separating its interior into two independent chambers. The membrane has a circumferential projection for supporting the outer tire tread should the outer chamber suddenly deflate. A novel tool for installing the safety devices of the present invention is also disclosed.

Abstract: A tire for a two-wheeled vehicle, particularly, a bicycle intended for a racing purposes having an improved running stability, superior durability and impact resistance, and reduced weight. The tire includes a carcass layer formed by arranging cord belts with a rubber paste coated thereon in such a manner that the cords of the cord belts cross each other. A tube is fitted to the inside of the carcass layer, and a rubber tread portion is bonded to the outer periphery of the carcass layer. The cord belt is produced in bias form with alternately arranged cords superior in durability and impact resistance and cords superior in adhesion with rubber. The two types of cords may be equal in number, or a majority of one of the two types of cords employed, depending upon the precise application of the tire and the conditions under which it is intended for use.

Abstract: A pneumatic radial tire, wherein each carcass ply contains a rubberized layer of load bearing polyamide monofilaments.

Abstract: The herein described invention relates to a preparing of tires where a part of the tire is cured by exposure to electron irradiation or other means of radiation which have the same curing effect on the part. The irradiation is effected in a continuous operation in which the source of radiation and said part are moved continuously relatively to one another.

Abstract: A process for producing a pneumatic tire having high uniformity with a carcass ply formed of polyester cord, including the steps of: (a) spinning polyester at a tension at the solidifying point of melt polyester between 1.5.times.10.sup.7 and 7.5.times.10.sup.7 dyne/cm.sup.2 ; (b) drawing the polyester into a filament at a draw ration of 2.0 to 3.0; (c) twisting a polyester filament at a twist coefficient of from 800 to 2,500; and then (d) heat treating the filament so that the dimension unstabilizing factor is 8.5 or less. The polyester filament is made of polyester having an ethylene terephthalate component of at least 85 mol % and a high degree of polymerization such that the intrinsic viscosity is at least 0.8, and the ratio of the birefringence of the surface portion to that of the central portion in the polyester filament is from 1.03/1 to 1.15/1; the twist coefficient is represented by T.times..sqroot.

Abstract: A heavy duty pneumatic radial tire is disclosed, which comprises a single carcass ply having aromatic polyamide fiber cords at a cord angle of about 90.degree. relative to a tire equatorial plane, a pair of bead cores, and first and second reinforcing layers successively laminated axially outside turn-up portions of the carcass ply. A height of the turn-up portion is from 0.075 to 0.16 time that of the carcass ply in a tire section. The first reinforcing layer comprises steel cords arranged obliquely to the carcass ply cords, and has a radially outer end higher than an end of the turn-up portion. The following relation exists among a.sub.1, d.sub.1, a.sub.2, d.sub.2, T.sub.1 and T.sub.2 : ##EQU1## in which a1, d.sub.1, a.sub.2, d.sub.2, T.sub.1, and T.sub.

Abstract: A method of producing tire belt comprises a first step of attaching a first belt ply to a forming drum having, at its axial ends, curved portions whose diameters reduce progressively toward axially outer ends of the curved portions. The first belt ply has a width wider than an axial length of the forming drum. The method further comprises a second step of expanding the forming drum so that diameters of the curved portions at axially outermost ends become a predetermined diameter smaller than a maximum diameter of the forming drum in the first step to deform a central portion of the first belt ply following to an outer contour of the forming drum, a third step of foldering ends of the first belt ply at axial outer ends of a second belt ply after attaching the second belt ply to a center portion of the first belt ply outwardly thereof, and a fourth step of attaching a third belt ply in plural layers onto the first and second belt plies outwardly thereof.

Abstract: A pneumatic radial tires having a tread of an asymmetrical profile are disclosed. A circumferential location at which a tread takes its maximum outer diameter is deviated from a tire equator outwardly opposite to a side on which the tire is to be mounted to a vehicle, by a distance L equal to a range from 0.05 to 0.30 times as long as a width W of the tread. A ratio of d.sub.2 /d.sub.1 is set at a range from 0.98 to 1.00 in which d.sub.1 and d.sub.2 are diameters of shoulders of the tread on the mounted tire outer side and mounted tire inner side, respectively. The tires are free from uneven wear such as shoulder drop uneven wear, river wear and one side wear.

Abstract: Tubeless type heavy duty low profile pneumatic radial tires are disclosed, which each comprise a radial carcass layer toroidally extending from one of beads to the other, and a belt comprising at least two plies successively closed piled on a crown portion of the carcass layer. The at least two plies have non-extensible cords arranged at a shallow angle with respect to an equatorial plane of the tire but intersecting between the plies through the tire equatorial plane. The tire uses at 15.degree. rim as a design rim thereof. When the tire is assembled into the design rim and inflated at a normal internal pressure, a shape of the carcass line in a tire radial section meets the following inequalities (1) through (4).0.45.ltoreq.H/B.ltoreq.0.75 (1)(-0.12 H/B)+0.79.ltoreq.l/B.ltoreq.(-0.12 H/B)+0.85 (2)(0.1 H/B)+1.11.ltoreq.B/J.ltoreq.(0.1 H/B)+1.15 (3)0<a/H.ltoreq.0.

Abstract: Belt and tread transfer ring bladders and belt and tread drum expand bladders for use in fabrication of tires are provided with reinforcing layers (preferably of aramid fiber or fabric). The bladders are prepared by assembling on a cylindrical drum, first and second continuous, partially cured rubber belts with a layer of reinforcing material sandwiched there between. One edge of the continuous belt-sandwich is folded towards the outer edge, the latter edge is folded inwardly so as to overlap said first fold and the assembly is then cured advantageously using steam and pressure. The overlapped folds in the resulting bladder from the surface of the bladder which contacts the workpiece during use as either a transfer ring bladder or drum expand bladder. The bladder of the invention is found to possess a significantly extended working life as compared to bladders hitherto available.