Hong Jin Crown Corporation, Ltd.

Other

Hjc Co., Ltd.

Wan-Ki Hong

Dae-Ki Park

Myung-Ho Jung

Seung-Han Park

Kwang-Moon Choi

Jin-Gon Lee

Jung-Hwan Park

Disclosed is a helmet or a safety cap for protecting the rider's head and a method of manufacturing the same, in which the main body of the helmet has a dual-structure so as to reduce work process when an outer surface of the helmet is painted, and weight thereof. The main body of the helmet has a dual-structure in that an outer surface thereof is formed of a thermoplastic for an aesthetic enhancement and an inner surface thereof is formed of FRP or a mixture of aramide fiber, polyethylene fiber, vinylon, carbon fiber. Thus-formed dual structure of the helmet body contributes to enhancement in impact resistance and convenience in painting, decreasing an overall weight of the helmet.

Dual-structure helmet and method of manufacturing the same

A motorcycle helmet includes a jaw protector pivotably attached to the helmet along opposite sides thereof. The jaw protector is provided with at least one releasable lock fixing the jaw protector in a lowered use position. The lock is deactivated for enabling a pivoting of the jaw protector to a raised position.

Jaw protecting apparatus of helmet

Prefabrication type high level road structure and construction method

Growing community of inventors

Seoul, South Korea

Wan-Ki Hong