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Class Information
Number: 4/686
Name: Baths, closets, sinks, and spittoons > Drain, overflow or trap for a sink or bath > Drain and overflow > With valve > Standpipe overflow
Description: Subject matter wherein the apparatus is substantially L shaped with a horizontal branch in fluid communication with the drain of the sink or bath so that water can rise in a vertical branch, matching the level in the sink or bath, until it reaches the overflow opening in the vertical branch which bypasses the drain valve to prevent overflow in the sink or bath to control the flow of fluid.

Patents under this class:

Patent Number Title Of Patent Date Issued
7181782 Basin drainage system for counteracting standing liquid Feb. 27, 2007
6415463 Drain stop and overflow mechanism for a bathtub Jul. 9, 2002
6295665 Sink drain extension Oct. 2, 2001
6272699 Overflow drain insert Aug. 14, 2001
5546774 Pre-rinse dispenser Aug. 20, 1996
5121509 Overflow and drain fittings for sanitary devices Jun. 16, 1992
4969217 Drain assembly for sanitary fixture with built-in overflow device Nov. 13, 1990

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