Abstract: A dispensing package system for a liquid product including first and second components which must be mixed together prior to use, includes a first container for containing the first component, and a second container for containing the second component prior to use. The first container includes a top dispensing nozzle sealed off by a cap when not in use, and a bottom port sealed by a removable plug from the interior thereof. To mix the components together a user unscrews a cap from the second container, and screws the neck of the second container into a threaded boss of a skirt secured to the bottom of the first container, for forcing a top portion of the neck of the second container into the bottom port of the first container for frictional engagement therewith, and for forcing the plug out of the port into the interior of the first container.

Abstract: This invention is directed to an aerosol container system with two separate chambers, each of which contains a component to be mixed with the other component just prior to use.

Abstract: Combinable bottle assembly (1,6) consisting of two separately fillable bottles designed to be fitted together one above the other, can be formed inexpensively of plastic, filled and stored separately from and independently of one another and can readily be connected and tightly combined with one another to form a two-compartment container convertible to a one compartment container.The floor or bottom wall (12) of the upper bottle (1) is formed as a separate cylinder element (3) having an annular connecting plate (13) which connects a skirt wall (14) of the cylinder element to the wall (15) of a central nozzle (9) arranged concentrically therein, forming a throughflow passage (16) which is closed by a stopper (10). The lower bottle (6) comprises an elongate neck having an external screwthread (33) which is engagable with an internal thread on the elongate nozzle to permit the second bottle to be screwed into the nozzle to a connecting position to dislodge the stopper and open the containers to each other.

Abstract: This invention is directed to a flap valve for a dispenser for viscous fluids. More particularly, this invention is directed to a flap valve having a body with a cylindrical valve opening therein, produced by injection molding which is circularly symmetrical to the cylindrical valve opening and extends outwardly around the axis of symmetry, wherein at least one spoke bridges the valve opening diametrically and has a sprue wart in the center thereof, said body cooperating with a flap which closes said cylindrical valve opening, the center part of which flap is arched away from the sprue wart out of the plane of its edge, which edge sealingly fits over the edge of said cylindrical valve opening.

Abstract: This invention is directed to a dispenser for viscous fluids.