Molded nosecup valve assembly
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United States of America Patent
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-
Aug 3, 1993
Grant Date -
N/A
app pub date -
Dec 20, 1991
filing date -
Jul 18, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a gas mask, a flexible nosecup is used to prevent humid air that is exhaled from contacting the eye pieces of the mask. The nosecup is equipped with a one-way valve to allow fresh air into the nosecup. The conventional rigid valve body attached to the nosecup is replaced with a valve body molded integrally with the material of the nosecup and a valving element with a concave disk, having its rim seated on the annular valve seat of the valve body. The concave valving element accommodates any flexing of the valve body without losing the seal.
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