发明名称 Winterizing device for inground swimming pools
摘要 A device for use in winterizing inground swimming pools avoids the necessity of draining the pool in order to drain underground water-filled conduits before freeze-up. The device is an elongated cofferdam open at top and rear with a groove for receiving a sealant extending along the rear edge of side and bottom walls. The sealant, such as a denture adhesive, will hold the device against the pool side wall surrounding a water inlet, and so that the device opens above the water surface. Water within the device and the conduit leading to the inlet is pumped therefrom and then a plug is inserted in the inlet to prevent pool water from entering the inlet after the device is removed from the pool side wall.
申请公布号 US5259076(A) 申请公布日期 1993.11.09
申请号 US19920850987 申请日期 1992.03.12
申请人 VOIGHT, TERRANCE R.;STEINFIELDT, WAYNE H.;SWEENY, H. DERMOT 发明人 VOIGHT, TERRANCE R.;STEINFIELDT, WAYNE H.;SWEENY, H. DERMOT
分类号 E04H4/12;(IPC1-7):E04H4/14 主分类号 E04H4/12
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