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发明名称
地球公转演示装置
摘要
本实用新型公开了一种能够演示地球绕太阳公转,地球北极指向北极星,太阳直射点作南北回归移动,四季成因等现象的装置。它是由地球仪、变形的双曲柄结构等部分组成,它与靠齿轮传动的同类仪器相比,具有结构简单,操作方便,成本费用低等优点。
申请公布号
CN2060928U
申请公布日期
1990.08.22
申请号
CN90210756.9
申请日期
1990.03.23
申请人
李锦如;焦秋生
发明人
李锦如;焦秋生
分类号
G09B27/08
主分类号
G09B27/08
代理机构
代理人
主权项
1、一个由金属或木质结构的双曲柄变形机构(包括曲柄(7)、(9),连杆(13),轴(2)、(4))和地球仪等组成的地球公转演示装置,其特征是把双曲柄在水平面上的平行结构改为在垂直面上的平行结构,形成一种新型双曲柄结构。
地址
山东省济南市经十路20号250014
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