发明授权
- 专利标题： Opening and closing device for an umbrella
- 专利标题（中）： 伞的开闭装置
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申请号： US926808申请日： 1978-07-21
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公开(公告)号： US4149553A公开(公告)日： 1979-04-17
- 发明人: Ying-I Lee
- 申请人： Ying-I Lee
- 专利权人： Lee Ying I
- 当前专利权人： Lee Ying I
- 主分类号： A45B25/14
- IPC分类号： A45B25/14 ; A45B19/00
摘要：
The present invention relates to an opening and closing device for an umbrella which can be easily handled by a single hand; in which a button structure is positioned between a handle and a shaft to control an open-close transmission device rotated by a ratchet gear, thereby to actuate hard steel wire thereof to retract periodically, thus the opening and closing of the umbrella can be handled by a single hand.
公开/授权文献
- USD344048S Tire tread 公开/授权日：1994-02-08
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