| 摘要 |
A recreational vehicle (RV) waste drainer having a drainer sheath (1) with an angled drain nipple (3) at a receptacle end in fluid communication with an expandable tube (5) in the drainer sheath. A drain end of the expandable tube is attached to the drain nipple. A holding-tank connector (6) on a holding-tank end of the expandable tube connects the expandable tube to an RV holding tank (21, 22) for draining it and connects the expandable tube to a sheath lid (4) for sealing the drainer sheath and the expandable tube against escape of odorous gases and liquid at a tube end of the drainer sheath when not in use. The drain nipple has a beveled nipple-attachment wall (9) that is resilient and sized to fit inside of receptacle pipes (10) of RV sewage receptacles (11). A nipple lid (2) has a nipple sleeve that fits onto the beveled outside periphery of the drain nipple like an input pipe to seal the drainer sheath against escape of odorous gases and liquid at the drain nipple when not in use.
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