Abstract: An aerosol container is particularly useful for a razor wherein the container serves as part of the handle for the razor. The container includes a combination cap/actuator which dispenses material when depressed. The cap/actuator may be depressed only when placed in a selected rotational position, other rotational positions causing engagement between a shoulder on the container and a skirt on the cap/actuator to prevent depression of the cap/actuator.

Abstract: Apparatus for measuring mass flow of a fluid in a conduit by which the fluid passes through a moveable chamber which establishes a constant velocity profile of the flowing fluid at the outlet opening of the chamber. Measurement of momentum force at the control surface defined by the outlet opening of the chamber permits accurate mass flow measurements by application of the momentum equation.