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发明名称
空身嵌件式弓芯算珠
摘要
一种空身嵌件式弓芯算珠,由空身内珠嵌件内装超重物体和两截内径尺寸不一的内芯插口相接形成弓形内腔,经第二次压入外围材料形成珠面和棱角无胶接处和无裂缝的完整珠身,并且内芯口径尺寸比通常算珠略小,使通常算珠内芯与挡子的弧面接触变弧线接触,这种算珠在档上运动较稳定,可以克服梗珠、滞珠、飘珠回珠现象。
申请公布号
CN2079324U
申请公布日期
1991.06.19
申请号
CN90223928.7
申请日期
1990.11.15
申请人
黄米文
发明人
黄米文
分类号
G06C1/00
主分类号
G06C1/00
代理机构
代理人
主权项
1、一种空身嵌件式弓芯算珠,其特征在于整个算珠由空身内珠嵌件装入超重物体和形成弓形内径的内芯加外围组成。
地址
317000浙江省临海市江滨路206号
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