发明名称 |
Amusement device with a bubble movable in a liquid having means for controlling the size and movement of the bubble |
摘要 |
An amusement device comprising a container having a hollow space filled with a liquid having a bubble movable therein. The device includes a channel separate from said hollow space; for trapping a portion of the bubble so as to be able to control its size and in a preferred embodiment of the invention an arrangement to make the bubble move rapidly between two compartments formed in the hollow space.
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申请公布号 |
US4006902(A) |
申请公布日期 |
1977.02.08 |
申请号 |
US19750559909 |
申请日期 |
1975.03.19 |
申请人 |
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发明人 |
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分类号 |
A63F7/04;(IPC1-7):A63F7/04 |
主分类号 |
A63F7/04 |
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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