Other

Hankook Tire Co., Ltd.

Kwan Woo Jung

Il Yong Park

Ji Wan Lee

Mi Jung Lee

Kum Kang Hwang

Ill Soon Jang

A head-mounted display apparatus includes: a first body including a front face having a vision hole and a rear face formed in the shape of a diving mask to cover up a user's nose and eyes; a first external body extending forward from the rear face of the first body to the front face of the first body and being spaced apart from a side surface of the first body and surrounding the side of the first body; a second body including a front face opened and a rear face having a lens mounting hole to which with a lens fixed; and a second external body extending rearward from the front face of the second body to the rear face of the second body and being spaced apart from a side surface of the second body.

Head-mounted display apparatus

Disclosed is a tire-reinforcing steel cord for a radial tire. The tire-reinforcing steel cord has a double layer structure including a first-layer core and a second-layer core provided on the surface of the first-layer core. The first-layer core has an elliptical or rectangular cross section. The tire-reinforcing steel cord can improve processability, fatigue characteristics, and rolling resistance performance of a tire, resulting in improved fuel efficiency. A radial tire using the tire-reinforcing steel cord is also disclosed.

Tire-reinforcing steel cord and radial tire using the same

Growing community of inventors

Changwon-si, South Korea

Kwan Woo Jung