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.
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 代理人
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