Safety anti-reversing device for a bottom of a basin
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United States of America Patent
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Oct 27, 2015
Grant Date -
Jan 16, 2014
app pub date -
Jul 11, 2013
filing date -
Jul 16, 2012
priority date (Note) -
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Abstract
Able to prevent a leakage flow from a basin in a ground and to enable a filling flow from this ground, a safety anti-reversing device comprises a body comprising communicating openings for passage of the filling flow. Supported by this body, a flexible membrane comprises an annular shutter and a closing portion. The annular shutter is offset with respect to the communicating openings and swivels between a closed down position in which this annular shutter is applied in tight manner on the body, and an open position in which the annular shutter is away from the body. Distinct from the annular shutter, the closing portion covers the communicating openings so as to be able to hermetically close these communicating openings.
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