Abstract:
A bead of a tire comprises a pair of beads interiorly inserted with a plurality of annular members, and the annular members are mutually parallel. Each of the annular members is made of a plurality of flexible steel cords twisted together, and the diameter of the respective flexible steel cords ranging from 0.05 mm to 1.0 mm. The tire is flexible and can be folded/rolled into a compact package for easy transportation and storage. In addition, a reinforcing member is made of cotton or other materials and can be rounded with the annular member for improving the joint strength of the flexible steel cords.
Abstract:
An elastomeric article and a composite cord for reinforcing an elastomeric article. The cord comprises a core spirally wrapped by at least one high tenacity, substantially inextensible yarn. The core is composed of at least one unoriented polymeric filament which has an initial modulus of elasticity of at least 1000 newtons/mm.sup.2 and an elastic limit of at least one kilogram. The core has a length at break which is greater than the length of the yarn when the yarn is fully stretched out to permit stretching out of the yarn without rupture of the core for expansion of an elastomeric article and reinforcement thereof in the expanded condition.
Abstract translation:用于增强弹性体制品的弹性制品和复合帘线。 帘线包括由至少一个高强度,基本上不可伸长的纱线螺旋地包裹的芯。 芯由至少一种未取向的聚合物长丝组成,其具有至少1000牛顿/ mm 2的初始弹性模量和至少1千克的弹性极限。 该芯的断裂长度大于纱线的长度,当纱线被完全拉伸时,可延伸出纱线,而不会在扩张状态下使弹性体制品膨胀的芯片破裂,并且加强。
Abstract:
This disclosure related to a pneumatic tire which is collapsible in its uninflated shape. This disclosure relates to a pneumatic tire and the rim combination of the pneumatic tire and a rim wherein the bead areas of the tire are capable of rotating in their mounted, uninflated shape to attain a different configuration in their mounted, inflated shape. The tire may have the characteristic wherein the sidewalls are capable of being folded axially inwardly toward each other when the tire is mounted on the rim and uninflated. In the uninflated and folded shape the tire and the combination of the tire and rim of this disclosure conserve space and weight over a standard tire and tire and rim combination. This uninflated, folded feature is designed primarily to be used as a spare tire replacement in automobiles.
Abstract:
1,137,054. Production of pure trioxane. FARBENFABRIKEN BAYER, A.G. 13 Jan., 1966 [13 Jan., 1965], No. 1688/66. Heading C2C. Pure trioxane is obtained by distilling a mixture having a pH of from 1 to 3 of formaldehyde or paraformaldehyde, water, an acid and a trioxane organic solvent which is immiscible with water, separating out a solution of trioxane in the organic solvent from the vapours distilling over and, after the removal of the formic acid contained therein by means of an ion exchanger, separating the organic trioxane solution by fractional distillation into substantially pure trioxane and the organic solvent containing the impurities. The process is advantageously effected by distilling the initial mixture and introducing the vapours which distil over into the middle portion of a first distillation column, drawing off a substantially trioxane free aqueous formaldehyde solution from the sump of this column (which solution can be returned to the process after having been passed through an ion exchanger and optionally after having been concentrated), completely condensing in a reflux condenser the product forming at the head of the first distillation column, separating the organic and aqueous phases which are thereby formed, returning the aqueous phase to the head of the first distillation column, and feeding the organic phase containing the trioxane, after passing the organic phase through an ion exchanger into the middle portion of a second distillation column, such that the water-immiscible solvent, water and formaldehyde distil over at the head of said second column, while pure trioxane is obtained in the sump, the trioxane preferably being discharged in an inert gas atmosphere. Suitable solvents which are immiscible with water are, for example, methylene chloride, chloroform, benzene and cyclohexane. A suitable form of apparatus for carrying out the above process is described.
Abstract:
The invention relates to a collapsible tyre for a vehicle, comprising at least one carcass reinforcement (5) surmounted radially from the outside by an inextensible crown reinforcement (4), itself radially on the inside of a tread (2), the said reinforcements (4, 5) each consisting of at least one layer of reinforcing elements, the said tread (2) being connected to two beads (6) by two sidewalls (8), the said beads (6) being intended to come into contact with a rim, each bead (6) comprising at least one circumferential reinforcing element (3) called a bead wire, the said bead wire (3) defining a mean line forming a substantially circular closed curve in a circumferential plane.The bead wire (3) of each bead (6) is flexible and comprises at least one concave part Pc of smaller radius Rc and of centre of curvature Cc.The invention also relates to a method of collapsing the tyre and to a use of the tyre.
Abstract:
Provided are a run-flat supporting body whose durability is enhanced while a large number of through holes are formed in an annular shell thereof, and a tire/wheel assembly. The run-flat supporting body (1) is configured of the annular shell (2) and elastic rings (3) and (3). The annular shell (2) works as a supporting surface on an outer peripheral side, and bifurcates into two leg portions on an inner peripheral side. In addition, the annular shell (2) is provided with a large number of the through holes (4) in wall surfaces thereof. The elastic rings (3) and (3) are attached respectively to the two leg portions of the annular shell (2). The run-flat supporting body 1 is supported on a rim of a wheel with the elastic rings (3) and (3). According to a configuration of the present invention, peripheries of the respective through holes (4) are thickened, residual stresses are applied to the peripheries of the respective through holes (4), or each through hole (4) is formed into an elliptic shape having the major axis in a circumferential direction.
Abstract:
A foldable pneumatic tire including an annular tread and sidewalls each extending from both ends of the tread and terminating in bead portions, the sidewalls adapted to be folded axially inwardly toward each other to be collapsed within the tread. The foldable tire located in a mold for vulcanization comprises the bead portions each extending perpendicular to a rotating axis of the tire and having a height 1.2 to 2.0 times of that of a flange of a rim, and each the sidewall consisting of first and second sidewalls making an angle with each other between 140.degree. and 160.degree., and an outer surface of the second sidewall radially inwardly sloping at an angle of 0.degree. to 5.degree. to the rotating axis. The tire according to the invention is superior in foldability and can be attached to the rim with ease and is greatly useful for a spare tire for automobiles.
Abstract:
A method of manufacturing a pneumatic tire which when inflated has dimensions generally associated with a conventional pneumatic tire but when deflated has an outer diameter and a section width substantially the same, and in any event not substantially greater, than the maximum width and diameter of the rim on which the tire is mounted. The tire is built by the flat band method of construction and is molded at least substantially in the cylindrical shape in which it was built. The sidewalls are sufficiently flexible that they may be folded into an S-shape and underneath the tread when the tire is deflated. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawings and the following detailed description.
Abstract:
A foldable tire includes a tire main body provided at two edges thereof with two tire beads respectively. A plurality of rings are disposed in each of the tire beads. Each of the rings has a reinforcing core, which includes a plurality of flexible steel filaments helically entwined with each other and has a diameter ranging from 0.2 millimeters to 0.5 millimeters, and a cladding layer clothing the reinforcing core, so that the reinforcing cores located in each of the tire beads are separated from each other.