发明名称 Buoyant device with means for producing thrust
摘要 A floatable toy has a body which even when filled with water is inherently buoyant, has an aperture for readily filling with water and when floating in the level of the water within is higher than the level of surface upon which the body floats and having restrictive flow passages from the interior to the exterior to below the surface to produce rotational or other movement.
申请公布号 US4268989(A) 申请公布日期 1981.05.26
申请号 US19780972871 申请日期 1978.12.26
申请人 WICKHAM, DAVID J. 发明人 WICKHAM, DAVID J.
分类号 A63H23/10;(IPC1-7):A63H23/04 主分类号 A63H23/10
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