The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 12, 2006
Filed:
Mar. 25, 2004
Han Soo Jeon, Gyeonggi-do, KR;
Young Jin Park, Gyeonggi-do, KR;
Jin Young Kim, Gyeonggi-do, KR;
Dong Sung Kim, Gyeonggi-do, KR;
Sung Chul Shin, Seoul, KR;
Kyoung Hun Han, Gyeonggi-do, KR;
Han Soo Jeon, Gyeonggi-do, KR;
Young Jin Park, Gyeonggi-do, KR;
Jin Young Kim, Gyeonggi-do, KR;
Dong Sung Kim, Gyeonggi-do, KR;
Sung Chul Shin, Seoul, KR;
Kyoung Hun Han, Gyeonggi-do, KR;
LG Cable Ltd., Seoul, KR;
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.