.~ Connected to a source of external fluid under pressure {5}
255.05
.~.~ With force cup (e.g., a plunger)
DEFINITION
Classification: 4/255.05
With force cup (e.g., a plunger):
(under subclass 255.04) Subject matter wherein the other end of the conduit has a flexible cup or head used to close the opening and flexed to provide additional fluid pressure to clear the obstruction from the drain pipe of the sink, bath or flush closet.