发明名称 |
Scrolling sign with manually operated change mechanism |
摘要 |
A scrolling sign that includes a plurality of webs each having indicia which are displayed through a window on the sign face. The plurality of webs are disposed in vertical and horizontal alignment with one another. Each of the webs are disposed between a forward and a reverse web roll. A plurality of forward and reverse web rolls are rotatably mounted to a modular unit such that the individual web rolls are aligned. A drive shaft passes through each of the web rolls and is engageable with only one of the web rolls at a time. The engagement of the drive shaft with the web rolls, as well as rotation of the individual web rolls is manual. The drive shaft includes a driving mechanism which prevents the drive shaft from being rotated in an improper direction.
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申请公布号 |
US5896688(A) |
申请公布日期 |
1999.04.27 |
申请号 |
US19970853216 |
申请日期 |
1997.05.09 |
申请人 |
MILWAUKEE SIGN CO., INC. |
发明人 |
AIKEN, ROBERT B.;CLAPPER, ROBERT C. |
分类号 |
G09F11/29;(IPC1-7):G09F11/18 |
主分类号 |
G09F11/29 |
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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