Patents by Inventor Dae-Ki Park

Dae-Ki Park has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dual-structure helmet and method of manufacturing the same
    Patent number: 6676884
    Abstract: 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.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: January 13, 2004
    Assignee: Hong Jin Crown Corp., Ltd.
    Inventors: Wan-Ki Hong, Myung-Ho Jung, Dae-Ki Park, Seung-Han Park
  • Dual-structure helmet and method of manufacturing the same
    Publication number: 20030049431
    Abstract: 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.
    Type: Application
    Filed: October 16, 2002
    Publication date: March 13, 2003
    Applicant: HONG JIN CROWN Corporation, Ltd.
    Inventors: Wan-Ki Hong, Myung-Ho Jung, Dae-Ki Park, Seung-Han Park
  • Dual-structure helmet and method of manufacturing the same
    Patent number: 6468644
    Abstract: 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.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: October 22, 2002
    Assignee: Hong Jin Crown Corporation, Ltd.
    Inventors: Wan-Ki Hong, Myung-Ho Jung, Dae-Ki Park, Seung-Han Park