Abstract: Disclosed is an air-curtain device (1) which can be positioned across the top of an openingsuch as a doorway (2), and comprises main air driving means (3) for providing a main airstream across the opening (2) to form a main air-curtain (4), and lateral air driving means (5) for providing a lateral airstream angled relative to the airstream from the main air driving means (3) to form a lateral air-curtain (6).

Abstract: Apparatus for dispensing a flowable substance, e.g., a fluid, has a housing with an indicating chamber, an outlet and two fluid paths from a container, one of the fluid paths to the indicating chamber and the other fluid path to the outlet. The indicating chamber may have indicia identifying, in real time, an amount of fluid that has flowed through the outlet. A shroud-cap may close the outlet and obscure the indicating chamber. Each fluid path includes a respective metered inlet. All the metered inlets are substantially identical in size and shape. Some disclosed shapes reduce surface tension for more accurate readings. A snorkel tube may extend into a container to supply makeup air into the container as fluid is dispensed. An indicating spout for flexible containers is vented to only the exterior of the flexible container.

Abstract: A can closure includes a plastic insert permanently installed in a hole in the can top, and a plug which seats in a pouring aperture extending through the insert. Locking dogs on both the insert and the plug provide a bayonet-type connection so that the container can be resealed after its contents have been partially used. Protrusions on the locking dogs prevent the plug from being fully removed until pressure within the container has been relieved.