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1. 发明授权

US3919794A Multiple message sign apparatus 失效
标题翻译：多信息符号装置
公开(公告)号：US3919794A
公开(公告)日：1975-11-18
申请号：US39953773
申请日：1973-09-21
申请人： HUNTER E TAIT JR
发明人： HUNTER JR E TAIT
IPC分类号： G09F11/02 , G09F11/00
CPC分类号： G09F11/025
摘要： A signboard having a pair of opposed message viewing faces and containing a first pair and a second pair of separate and independent messages, with the capability of concurrently displaying one message of the first pair through one viewing face and the other message of the first pair through the other viewing face, then concurrently substituting and displaying the second pair of messages through the viewing faces in a similar manner so that on a sequential basis one message from the first pair and one message from the second pair are alternately displayed through one viewing face and the other two messages are displayed in a similar manner through the other viewing face. The messages are made up of message segments disposed on the surfaces of an array of parallelogram prism message support members mounted within the sign frame for oscillation in unison between first and second viewing positions. Gaps otherwise present in the displayed message, resulting from the offset of the parallelogram sides relative to the axes of rotation of the message support members, are avoided through the provision of a pair of end members containing surface portions which selectively occupy the gaps in the viewing faces.
摘要翻译：一种具有一对相对的消息观察面并且包含第一对和第二对独立且独立的消息的招牌，具有通过一个观看面同时显示第一对的一个消息的能力，以及第一对的另一个消息通过另一个观看面，然后以类似的方式同时通过观察面代替和显示第二对消息，使得在连续的基础上，来自第一对的一个消息和来自第二对的一个消息通过一个观察面交替显示，并且其他两个消息以相似的方式通过另一个观看面显示。消息由设置在安装在标志框内的平行四边形棱镜消息支撑构件阵列的表面上的消息段组成，用于在第一和第二观察位置之间一致振动。由于平行四边形相对于消息支撑构件的旋转轴的偏移而产生的差距通过提供一对端部构件来避免，该端部构件包含选择性地占据观察点中的间隙的表面部分面孔

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