| 摘要 |
A pressure relief vent valve for a fluid-tight sealed container and especially a sealed alkaline galvanic cell, the pressure relief vent valve comprising a resilient deformable ball of an elastomeric material which is positioned to overlie a vent orifice provided within the container and a retainer means for maintaining the ball in place over the vent orifice and in contact with a valve seat provided around the peripheral edge portions of the vent orifice and for compressing and deforming the ball into a flattened configuration forming a normally fluid-tight seal between the ball and the valve seat. |
