Appeal No. 2006-2338 Page 2
Application No. 10/326,449
BACKGROUND
The appellant's invention relates to an overflow system for a bathtub and a
method of sealing an overflow fluid port of a bathtub for testing for leaks. Claim
4, reproduced below, is representative of the subject matter on appeal. A copy of
all of the claims on appeal can be found in the appendix to the appellant’s brief.
4. An overflow system for a bathtub which has a bottom, and
adjacent side and endwalls, a drain port in the bottom, and
overflow port in an endwall, with said overflow port being in
communication with a vent pipe, comprising:
a drain pipe adapted to be in communication with said
drain port and said overflow port,
said drain pipe having an inverted L-shape, including a
horizontal leg extending into and through the overflow port of
the bathtub and terminating with a flat perimeter edge, and a
vertical leg extending downwardly for connection to a fluid
drain system,
and an expandable plug having a resilient washer with a
smooth and continuous outer perimeter that is removably
positioned in the interior of the horizontal leg and expanded to
frictionally seal the horizontal leg against fluid flow.
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