Directional valve and respirator product with a directional valve
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United States of America Patent
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Nov 15, 2016
Grant Date -
Mar 20, 2014
app pub date -
Sep 13, 2013
filing date -
Sep 14, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A directional valve for a respirator product includes a valve housing (15) and a valve seat (1) for receiving a flexible valve membrane (16). The valve seat has a circular and essentially flat sealing surface (2) surrounding an opening (3), which is sealingly covered by the valve membrane during an inspiration phase. A fixing lug (13), on the valve housing (15), fixes the valve membrane in the valve seat and is arranged offset in relation to the center of the valve membrane, such that an entire circumferential surface of the valve membrane is lifted off from the sealing surface during an expiration phase. The fixing lug is directed essentially at right angles to a flow plane formed by the opening. A counter-support (25), within the opening, is arranged opposite the fixing lug such that the valve membrane is mounted with fixed clamping action, between the fixing lug and the counter-support.
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