Container closure cap with metering appliance

Abstract From the Canadian patent

A device for metering a fluid product comprises a closure cap threaded onto the neck of a container and acting on the stem of a valve member to lift the latter off a seat formed at the lower end of a cylindrical wall fixedly inserted into the neck of the container against the action of a resilient member. A metered dose of the product is dispensed by turning the container upside down and unscrewing the closure cap by then filled with the metered dose. In the inverted position the fluid product contained in the container flows into a chamber defined by the cylindrical wall via the opened valve member and a passage associated to the resilient element. The flow of the fluid product into the …