摘要:
A pneumatic tire and a mounting system therefor, having constructional features designed to provide optimized operational characteristics. The tire has a low aspect ratio .lambda. and a low height ratio .theta. conforming substantially to the relations .lambda.=0.236/.theta. and 0.32
摘要:
A tack measuring device and method wherein two specimens are brought into abutting contact under a predetermined load, after which the contact is maintained momentarily. The specimens are then separated within a second time interval. A load cell measures the force as a function of time and the tack is measured in terms of velocity times the force integrated over the second time interval.
摘要:
A tire molding system includes a mold having a surface defining a cavity for receiving and shaping an uncured tire. The uncured tire is pressed against the surface defining the cavity. Fluid is evacuated from between the uncured tire and the surface defining the cavity. A recess extends from the cavity for forming a marking on the sidewall of the tire. A passage fluidly communicates the recess with the exterior of the mold. The passage includes a first end portion adjacent the recess and a second end portion adjacent the exterior of the mold. The second end portion extends for a distance less than one-half of the total length of the passage. A restrictor is located entirely within the second end portion of the passage for restricting fluid flow through the passage during the evacuation of fluid and before the recess is sealed off from the cavity by the uncured tire when the uncured tire is pressed against the surface defining the cavity.
摘要:
In a tire mold having a pair of mold parts separable about cooperating surfaces of the respective mold parts which define a parting line region, each of the mold parts includes a surface defining at least a portion of a cavity for shaping a tire. The tire mold further includes a plurality of pockets for defining a respective plurality of circumferentially arranged tread elements in the tire. The improvement comprises a vacuum source in fluid communication with the cavity of the tire mold for evacuating fluid from the cavity in the tire mold through a space located between the surfaces of the mold parts which define the parting line region. A vent fluidly connects a pair of adjacent pockets. A passage associated with one of the mold parts provides fluid communication between the vacuum source and one of the pair of adjacent pockets connected by the vent.
摘要:
The invention relates to a whitened polymeric blend composition in which the whiteness is achieved by the substitution of from about 0 to about 20 parts per hundred rubber of calcium sulfate for from about 0 to about 20 parts per hundred rubber of titanium dioxide by volume. The invention allows for a reduction of up to 20 percent of the titanium dioxide, while maintaining a brightness of at least 85 as measured on the L scale of the Minolta Chroma Meter test.
摘要:
A container for an uncured radial tire assembly having a tread portion and a sidewall joined at a shoulder and having a bead portion located axially outwardly of the sidewall. The container comprises a base and a frustoconical surface attached to the base. The frustoconical surface is for engaging the shoulder of the tire assembly to support the tire assembly with the bead portion and sidewall extending axially from the tire assembly substantially without deforming. The frustoconical surface is capable of supporting more than one size tire assembly. Two containers are stackable so a tire assembly is supported in one of the containers without being contacted by the other container.