Cleaning and liquid contact with solids – Apparatus – Automatic controls
Reexamination Certificate
2011-03-01
2011-03-01
Perrin, Joseph L (Department: 1711)
Cleaning and liquid contact with solids
Apparatus
Automatic controls
C134S0570DL, C134S0580DL, C134S096100, C004S211000, C004S216000
Reexamination Certificate
active
07896976
ABSTRACT:
A ventilation device for the discharge pipe for removing a flow medium pumped to a household appliance. A pipe ventilation valve is connected to the discharge pipe by a channel and comprises a valve body disposed in a float chamber filled with a working medium which is separated from the flow medium and actuates the valve body. The valve body is actuated by transmitting a pneumatic force between the flowing medium and the working medium of the float chamber or between the flowing medium and a sealing surface adjacent to the valve body by means of a pressure medium which is separated from the flowing medium and is enclosed in the channel. The inventive pipe ventilation device makes it possible to avoid a direct contact between the valve body of the pipe ventilation valve and the flowing medium, thereby preventing the valve body from being soiled.
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Graf Gerhard
Hesterberg Bernd
BSH Bosch und Seimens Hausgeraete GmbH
Howard James E.
Osterhout Benjamin
Pallapies Andre
Perrin Joseph L
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