Hyundai Motor Company

Kia Motors Corporation

Seohan Industry Co., Ltd.

Kia Corporation

Hyundai Sungwoo Casting Co Ltd

Jae Seok Lee

Jae Young Lee

Byung Chan Lee

Yoon Cheol Kim

Min Gyun Chung

Yoon Joo Rhee

Jae Woo Lee

Jin Woo Han

Sung Hyun Lee

Jai Min Han

Joo Beom Kim

O Sung Kwon

Jeong Ho Shin

Taeg Jo Kim

Gwang Yun Kim

Kyoung Don Yi

Soo Hyuk Lee

Byung Soo Yoo

Tae Ho Jung

Cheol Ki Kim

Sang Do Kwak

Hyun Ho Park

A natural rubber composition includes a base resin including natural rubber, a filler including carbon black and silica, and an additive. The carbon black has a diameter of 20 nm to 50 nm, and the silica has a surface area of 100 to 150 m/g. The additive includes at least one of a coupling agent, an activator, a crosslinking agent, an accelerator, or an anti-aging agent.

Natural rubber composition and molded article manufactured using the same

A brake disc, in which a hat part that is mounted on a hub and a disc part that provides friction surfaces with brake pads are made of different materials and are combined, includes: a plurality of bridges protruding and circumferentially arranged around an edge of the hat part for coupling to the disc part; a plurality of vanes defining a channel for air flow; and a plurality of coupling pillars, which are fixedly in contact with the bridges, respectively, arranged between a pair of disc plates. The coupling pillars are fixedly in contact with both sides of the bridges while exposing front ends of the bridges.

Brake disc

Disclosed is a brake disc for vehicles including a ring-shaped disc part provided with an insertion space formed at the central region thereof, a hub part disposed within the insertion space and provided with recesses formed on the external circumferential surface thereof, and connection parts configured to connect the disc part and the hub part, wherein each of the connection parts is divided into a curved section extending from the internal circumferential surface of the disc part and having both curved side surfaces and a rectilinear section extending from the curved section, having both flat side surfaces and inserted into each of the recess, and widths of the curved section and the rectilinear section are decreased in a direction toward the hub part.

Growing community of inventors

Hwaseong-si, South Korea

Jae Seok Lee