Baths – closets – sinks – and spittoons – Obstruction remover – Connected to a source of external fluid under pressure
Patent
1983-12-06
1986-01-28
Phillips, Charles E.
Baths, closets, sinks, and spittoons
Obstruction remover
Connected to a source of external fluid under pressure
E03D 1100
Patent
active
045661391
ABSTRACT:
A piston plunger consists of a suction cup, a cylindrical tube and a handle. Inside the cylindrical tube is a piston. A small air hole is provided in a connector between the suction cup and the cylindrical tube through which air inside of the cup can pass. The handle has an air vent. When a clogged water pipe or the like needs to be cleaned, the suction cup is placed directly on the opening of the pipe and downward pressure is applied to the suction cup. The air compressed in the cup passes through the air hole in the connector and forces the piston up the tube until the cup is pressed down tightly against the opening. There is sufficient clearance between the piston and the tube for the piston then to drop down the tube under gravity with the trapped air being free to escape through the vent in the handle. Repeatedly downwardly pressing the plunger in this manner is effective to unclog the pipe.
REFERENCES:
patent: 1574274 (1926-02-01), Allender
patent: 2498359 (1950-02-01), Coleman
patent: 2670475 (1954-03-01), Hord
patent: 4186451 (1980-02-01), Ruo
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