Patent ID: 7748378

Claim:
An aerosol metering valve comprising: (a) a valve stem that generally defines a longitudinal axis and comprises: (1) a body portion comprising a proximal end, a distal end, and at least one side surface connecting the proximal end and the distal end and comprising a metering surface, and having a sealing surface adjacent to the metering surface and distant from a stem portion of the valve stem, wherein the longitudinal axis and a plane tangential to at least a portion of the metering surface define an angle from about 2° to about 90°, and (b) a valve body; and (c) a metering gasket configured to be able to form a transient, substantially fluid-tight face seal between the valve stem and the sealing portion of the valve body, wherein the longitudinal axis and a plane tangential to at least a portion of the sealing surface define an angle from 30° to 80°.