Kumho & Co., Inc.

Chun-Sik Kim

Young-Rok Yoon

Seong-keun Kim

Jong-Dae Han

Gyoeng-Su Kim

A shoulder bladder used to make green tires has an inflatable portion including an inner-rubber member encased in body-ply and cover-rubber layers. Steel cords fixedly mounted relative to and projecting away from the cover-rubber layer have a first edge close to a lower corner of the uninflated bladder and approximately aligned with aligned ends of the cover-rubber and body ply layers. A cord-rubber composition extends (a) from and is adhered to a bottom portion of the cover-rubber layer, (b) around and adhered to the steel cords, (c) around two aligned corners on lower and upper surfaces of the bladder, and (d) along a top surface of the cover-rubber layer. The cord-rubber composition is adhered to the cover-rubber layer where the cord-rubber composition extends from the steel cord to the top surface of the cover-rubber layer.

Tire molder shoulder bladder

A golf ball has a spherical body having a mold parting line at the equator thereof by which the body is divided into a top half sphere and a bottom half sphere of equal dimensions, the molded partition line having no dimples thereon; an axis passing through the center of the plane which is defined by the mold parting line, the axis defining two poles at the intersection thereof with each of the half spheres, and being perpendicular to the plane; a first set of four identical spherical regular triangles and six identical spherical right triangles distributed over the surface of the top half-sphere, and serving as a constraining pattern for dimple distribution; a second set of four identical spherical regular triangles and six identical spherical right triangles distributed over the surface of the bottom half sphere and serving as a constraining pattern for dimple distribution, said second set of spherical triangles being a mirror image of the first set of spherical triangles but rotated by 60 degrees centering around said axis; and a series of dimples whose configuration being determined so as to fit in said constraining patterns, at least one of said configurations being determined to exhibit optimum performance with a tailwind, one being determined to exhibit optimum performance into a headwind, one being determined to exhibit optimum performance under no wind and other configurations being determined to exhibit optimum performance under low altitude, high altitude, low temperature, and high temperature conditions, respectively.

Golf ball

The present invention refers to that position in which an assembling position of the shoulder bladder is connected with the expansion part thereof and stress is accumulated, and the expansion of the bladder and the assembling part are all wrapped with core-rubber composition to form a body.

Method of preparing a shoulder bladder of a molder for a tire

A method for molding a tire tread element by injecting a rubber mixture through injection holes of an injection mold formed by moving two cooperating mold elements toward a cylindrical drum disposed therebetween. The mold elements sealingly match to an outer surface of the inflatable drum to define a mold cavity of a cross-section and length selected to form a tread element of precisely defined shape and size. A breaker layer may be integrated with an injected rubber mixture and the tread element may be made to be completely circular or linear with matchingly formed end surfaces enabling secure adherence thereat.

Growing community of inventors

Kwangju, South Korea

Chun-Sik Kim