发明授权
- 专利标题: Structure of a publicity scroll
- 专利标题(中): 宣传滚动的结构
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申请号: US11651982申请日: 2007-01-11
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公开(公告)号: US07350325B1公开(公告)日: 2008-04-01
- 发明人: Li-Chen Wang
- 申请人: Li-Chen Wang
- 代理机构: Rosenberg, Klein & Lee
- 主分类号: G09F11/18
- IPC分类号: G09F11/18
摘要:
A scroll for publicity includes a housing sleeve, a banner, a winding mechanism, and a pulling rod; the banner is printed with words and images; the winding mechanism is housed in the housing sleeve, and connected to one end of the banner for rolling up the banner; the winding mechanism includes a connecting pipe connected to the banner, and a torsion spring positioned in the connecting pipe; the banner is normally wound around the connecting pipe; when the pulling rod is being moved away from the housing sleeve to spread out the banner for showing the words and images for publicity, rotational energy will be stored in the torsion spring; the banner will be automatically rolled up around the connecting pipe, and the scroll closed after the user stops exerting force on the pulling rod.
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