发明名称 |
FREE BALL BEARING, SUPPORT TABLE, CONVEYANCE FACILITY, AND TURNTABLE |
摘要 |
A free ball bearing includes a retainer ball-pressing ring, the retainer ball-pressing ring including a substantially cylindrical pressing member inserted in an internal space between the semispherical recessed surface and the main ball toward the base end; the retainer ball-pressing ring being moved from a pressing position to a standby position along the unit center axis by the ring moving mechanism; the pressing member restricting or preventing rotation of the plurality of retainer balls by pressing the plurality of retainer balls when the retainer ball-pressing ring is at the pressing position; and the plurality of retainer balls of which the rotation is restrained or prevented by the pressing member being released when the retainer ball-pressing ring is at the standby position. |
申请公布号 |
KR101319945(B1) |
申请公布日期 |
2013.10.29 |
申请号 |
KR20117027784 |
申请日期 |
2010.05.13 |
申请人 |
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发明人 |
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分类号 |
B65G13/00;B65G49/06;F16C19/50;H01L21/677 |
主分类号 |
B65G13/00 |
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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