发明名称 |
Telescopic rod antenna apparatus |
摘要 |
A telescopic rod antenna apparatus of the present invention includes a mechanism for extending/retracting a telescopic antenna element by operating a smallest-diameter one of rods of the antenna element, and a means for setting the rods in the second state where a tip portion of a largest-diameter rod contacts an O-shaped ring seal means and then extending the antenna element using the mechanism, setting the rods in the second state where the antenna element is retracted using the mechanism, and displacing the second state to the first state where the largest-diameter rod is returned to the initial position of a holding tube to bring a top portion into contact with the O-shaped ring seal means.
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申请公布号 |
US6002378(A) |
申请公布日期 |
1999.12.14 |
申请号 |
US19980037388 |
申请日期 |
1998.03.10 |
申请人 |
HARADA INDUSTRY CO., LTD. |
发明人 |
HARADA, JIRO;SAITO, SHINICHI;KIMURA, MISAO |
分类号 |
H01Q1/10;(IPC1-7):H01Q1/10;H01Q9/30 |
主分类号 |
H01Q1/10 |
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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