Wash basin drain structure

Details Wash basin drain structure Wash basin drain structure

2010-12-17

2011-10-18

Huson, Gregory (Department: 3751)

Baths, closets, sinks, and spittoons

Drain, overflow or trap for a sink or bath

Drain valve

C004S690000, C004S691000, C004S692000

Reexamination Certificate

active

08037558

ABSTRACT:
A wash basin drain structure includes a tightening assembly, a control rod assembly, a drain pipe, and a plug. A threaded top ring of the fastening assembly relative to a threaded annular seat is screwed reversely to push an anti-leakage washer of the drain pipe upward, so that the threaded top ring and a washer are against the bottom of the wash basin and resilient portions of the resilient ring engages with a non-slip portion of the drain pipe. When a threaded fixing member in a threaded hole of a fixing seat of the control rod assembly is screwed inward, the end of the threaded fixing member will hold against the body of the drain pipe and pull an inner pipe portion of the fixing seat to seal and engage with an insertion hole of the drain pipe. A magnetic end head of a link rod of the control rod assembly is attracted to connect with a magnetic portion of a plug body of the plug to act as a lever. The present invention can be assembled with ease.

REFERENCES:
patent: 2496402 (1950-02-01), McVeigh et al.
patent: 4218785 (1980-08-01), Crawford et al.
patent: 5520802 (1996-05-01), Brubaker
patent: 2010/0154114 (2010-06-01), Van Zeeland et al.

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