Baths – closets – sinks – and spittoons – Obstruction remover – Connected to a source of external fluid under pressure
Reexamination Certificate
2005-06-21
2005-06-21
Thanh, LoAn H. (Department: 3763)
Baths, closets, sinks, and spittoons
Obstruction remover
Connected to a source of external fluid under pressure
C004S255040, C004S225100
Reexamination Certificate
active
06907622
ABSTRACT:
A flushing device for toilets includes a source for applying a fluid pressure to a blockage area and provides a seal in the blocked conduit to prevent backflow so that full pressure is applied to the blockage. The device includes a resilient, deformable and expandable element secured at the end of a tubular member which is inserted into a toilet conduit leading to the drain line. The tubular member has a coupling at its end opposite to the end carrying the expandable element to which a hose is connected in order to alternately supply pressurized water to the element or to the conduit. The expandable element is carried on a linear portion of the tubular member adjacent to the discharge orifice thereof and is expanded into a sealing condition with the conduit entrance leading into the drain line. The exterior surface of the expandable element is provided with spaced-apart ridges and grooves that are deformable to provide a positive sealing relationship with the entrance of the conduit so as to completely seal the entrance. A valve mechanism is disposed between the tubular member and a pipe connected to the element for user selection of fluid supply to either the element or to the drain conduit.
REFERENCES:
patent: 2733450 (1956-02-01), Wallace, Sr.
patent: 3608098 (1971-09-01), Andrisani
patent: 6163895 (2000-12-01), Davenport
Rasaei Eskandar
Rasaei Misha
Kontos Lina R
Marrs Roger A.
Thanh LoAn H.
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