发明名称 One-way self-closing drain plug apparatus
摘要 The present invention is a drain plug apparatus designed and configured to remain in the drain hole of a conventional pleasure water vessel, regardless of whether the vessel is in or out of the water. This drain plug apparatus includes a body assembly having at least two chambers. One chamber will house a shut-off valve for enabling the boater to open or close the drain plug apparatus. This will render water to escape or prevent entrance to the boat, respectively. A safety assembly is included in the second and each subsequent chamber. The safety assembly will prevent water passage into the water vessel should the user forget to close the drain plug assembly, prior to placing the boat in water.
申请公布号 US6634312(B2) 申请公布日期 2003.10.21
申请号 US20010977166 申请日期 2001.10.15
申请人 WARNER JERALD R.;PALM CHRISTOPHER M. 发明人 WARNER JERALD R.;PALM CHRISTOPHER M.
分类号 B63B13/02;F16K15/04;(IPC1-7):B63B13/00 主分类号 B63B13/02
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