A dispenser for pasty substances with a housing having a piston displaceable only in a discharging direction and an outer operating handle which is formed at a headpiece, compressible in a bellows-like manner in the direction of the piston, which headpiece has a dispenser-outlet opening. A tubule with an inner open end in every position of the bellows immersed in the pasty substance, extends inwardly from the dispenser-outlet opening.

A vertical container has first and second spaced apart horizontal openings and is otherwise sealed. The container has a hollow chamber communicating with the first and second openings. The chamber is adapted to be partially filled with liquid. The maximum level of fill is disposed below both openings. The region between the liquid level and the openings is air filled. A first device is secured and sealed to the first opening and includes a manually operable bellows disposed above the first opening. The bellows has compressed and released positions. A second device is secured and sealed to the second opening and includes a discharge orifice. A vertical dip tube open at both ends is disposed in the container. The top end of the tube is disposed adjacent the second opening. The bottom end of the tube is adjacent but spaced above the botton of the container. An air-liquid mixer disposed in the second opening in the region is coupled between the second means the top end of the tube. The mixer, when the bellows is in compressed position, mixes air with liquid expelled from tube to produce foam which is discharged through the orifice. Ambient air is drawn through the orifice into the region to replace the liquid expelled when the bellows returns from compressed position to released position.

A dispenser for flowable material, such as liquids or powder, having a container provided with a corrugated sidewall which allows the container to collapse when a downward force is exerted on the upper part thereof. The container has a tubular extension or spout projecting laterally from the upper part thereof and an upper surface free of structure to allow the palm or other part of the hand to readily engage the upper surface and to exert a downward force thereon. The force on the container causes material therein to travel upwardly through an inner tube and laterally through the spout to an outlet at the outer end of the spout. In one embodiment of the dispenser, the upper part of the container has a top opening therethrough to allow filling of the container and a cap removably closes the opening, the cap having a flat or slightly curved upper surface and being press-fitted or threaded onto the upper part to close the opening. In another embodiment, the container has a threaded neck, and a top with the spout thereon is threaded onto the neck. The spout is integral with the upper wall of the top and extends laterally therefrom. Several other embodiments of the dispenser are disclosed.

A device for treating gums allows a treating solution to be injected into contact with the gums between the teeth. The device is a hand held unit having a reservoir and a tubular neck joined to it. A hollow rubber tip is secured to the upper end of the neck. The tip has a number of ports in its sidewall. The device has a check valve in it that prevents fluid in the mouth from entering into the neck. Squeezing the reservoir expels fluid through the tip into contact with the gums between the teeth. The tip is small enough to be inserted partially between the teeth into contact with the gums.

A nonaerosol foamer comprised of an outer container or bottle and novel internal labyrinth structure comprising a slotted body covered along one face with a film of durable synthetic resinous material whereby separate air and liquid influent channels, a foaming site, and a separate foam effluent channel are defined. The liquid influent channel is constructed such that it allows controlled movement of the foamable liquid from the liquid reservoir to the foaming site during application of positive pressure within the outer container, while preventing siphoning of the foam. A novel film flap valve controls flow of influent air into the container to replenish air earlier used to produce foam.