发明名称 |
ELECTRONIC VOTING METHOD AND SYSTEM WHICH IS ABLE TO IDENTIFY A VOTER`S BALLOT EFFECTIVE IN COUNTING OF ELECTRONIC VOTE |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a forming disk which is used to perform form rolling of a heat exchange fin tube by a method for increasing the heat transfer coefficient by changing the shape of a fin and for enhancing the heat transfer coefficient by flexing the surface of a flat form-rolled fin, and a fin tube of high performance and high efficiency using the forming disk. <P>SOLUTION: The forming disk is disk-shaped, and has a shaft connection hole penetrated at the center to be connected to a shaft of a form rolling machine. Projections having a predetermined length in the radial direction at a predetermined angle on the circumference are included on both side faces, and a circular flex is formed on a formed fin radially at the predetermined period with a predetermined pitch in the axial direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
申请公布号 |
KR20050116050(A) |
申请公布日期 |
2005.12.09 |
申请号 |
KR20040040946 |
申请日期 |
2004.06.04 |
申请人 |
KOREA CHUNGANG EDUCATIONAL FOUNDATION |
发明人 |
LIM, JONG IN;LEE, DONG HOON;LEE, RAE |
分类号 |
F28F1/36;B21C37/20;B21H7/14 |
主分类号 |
F28F1/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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