Patents by Inventor Kyoung Hun Han

Kyoung Hun Han 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).

  • High speed direct mold clamping apparatus of an injection molding machine
    Patent number: 7217115
    Abstract: The present invention relates to a high speed direct mold clamping apparatus. The direct mold clamping apparatus has a grooved channel for the flow of oil inside a clamping cylinder to minimize the flow of oil between inside and outside the clamping cylinder. Then, the clamping ram can perform high speed reciprocation in the clamping cylinder.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: May 15, 2007
    Assignee: LG Cable Ltd.
    Inventors: Sung Chul Shin, Young Jin Park, Jin Young Kim, Dong Sung Kim, Han Soo Jeon, Kyoung Hun Han
  • Injection unit having rotatable device for preventing reverse flow
    Patent number: 7104775
    Abstract: Disclosed is an injection unit having a rotatable device for preventing reverse flow. To connect first flow channels formed in a spacer and second flow channels formed in a screw head when the metering is performed, and prevent reverse flow of resin by cutting off the first flow channels and the second flow channels when the resin is injected, the injection unit has a torsion spring as spring means between a shaft of the screw head and a screw, thereby rapidly preventing movement of the melted resin by restoring force of the spring when the metering of the resin is finished.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: September 12, 2006
    Assignee: LG Cable Ltd.
    Inventors: Han Soo Jeon, Young Jin Park, Jin Young Kim, Dong Sung Kim, Sung Chul Shin, Kyoung Hun Han
  • Injection unit having rotatable device for preventing reverse flow
    Publication number: 20040191359
    Abstract: Disclosed is an injection unit having a rotatable device for preventing reverse flow. To connect first flow channels formed in a spacer and second flow channels formed in a screw head when the metering is performed, and prevent reverse flow of resin by cutting off the first flow channels and the second flow channels when the resin is injected, the injection unit has a torsion spring as spring means between a shaft of the screw head and a screw, thereby rapidly preventing movement of the melted resin by restoring force of the spring when the metering of the resin is finished.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 30, 2004
    Applicant: LG CABLE LTD.
    Inventors: Han Soo Jeon, Young Jin Park, Jin Young Kim, Dong Sung Kim, Sung Chul Shin, Kyoung Hun Han
  • High speed direct mold clamping apparatus of an injection molding machine
    Publication number: 20040191361
    Abstract: The present invention relates to a high speed direct mold clamping apparatus. The direct mold clamping apparatus has a grooved channel for the flow of oil inside a clamping cylinder to minimize the flow of oil between inside and outside the clamping cylinder. Then, the clamping ram can perform high speed reciprocation in the clamping cylinder.
    Type: Application
    Filed: March 24, 2004
    Publication date: September 30, 2004
    Inventors: Sung Chul Shin, Young Jin Park, Jin Young Kim, Dong Sung Kim, Han Soo Jeon, Kyoung Hun Han