US PATENT SUBCLASS 4 / 689
.~.~ Pop-up

Current as of: June, 1999
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4 /   HD   BATHS, CLOSETS, SINKS, AND SPITTOONS

679  DF  DRAIN, OVERFLOW OR TRAP FOR A SINK OR BATH {3}
688  DF  .~ Drain valve {2}
689.~.~ Pop-up {1}
690  DF  .~.~.~> Contacted by rotating member {1}

DEFINITION

Classification: 4/689

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(under subclass 688) Subject matter wherein the apparatus has a seat in the drain opening and a plug with movement perpendicular to the seat, axial to the seat, shiftable off the seat towards the interior of the sink or bath to open and onto the seat to close to control the flow of fluid.

(1) Note. A plug fills the gap in a drain opening.

SEE OR SEARCH THIS CLASS, SUBCLASS:

684+, for a pop-up drain valve combined with an overflow.