A method of discharging particulate material from a hopper which minimizes vibration and impact loading is disclosed. The method provides a centrally located discharge column having a series of discharge openings extending vertically of an annular mass of particulate material in the hopper. The particulate material is discharged from a generally conically shaped, downwardly and inwardly directed, top portion of said mass of particulate material, progressively downwardly, through a choked flow di...

A substantially constant flow aerosol container having a dispensing valve provided in its inlet with a tube having a flow passage between 0.1 mm and 0.5 mm, and of a length sufficient so that flow occurs at a REYNOLDS number less than 3000. The propellant is a non-liquified gas.

The tapping device includes a keg adapter releasably connected from without the keg in the opening of the keg and having separate liquid and gas passages therethrough for the respective transfer of liquid from the inside to the outside of the keg. Valves are disposed in each of the liquid and gas passages. A collar, including a threaded ring underlying the keg flange, overlies a flange on the keg adapter to clamp the latter in the keg opening. A dispensing coupler having a depending probe is rel...

A container with a discharge valve attached defines an interior volume containing a liquid. A rigid dip tube is connected between the valve and a flexible dip tube. This flexible dip tube, in turn, is attached to a weighted pick-up head. The pick-up head is formed of a buoyant portion and a weighted portion, such that the head is self-righting but does not float. A conduit, which may be continuation of the flexible tube, extends through the pick-up head to an inlet on the lower face of the head....

In an aerosol valve, a pair of dip tubes located one within the other and attached to the valve body for the valve, the outer dip tube extending to a point adjacent the bottom of the aerosol container and the inner dip tube extending from the outer tube and being reversed to terminate adjacent the area of the valve at the top of the aerosol container, and a gravity actuated sliding plug in a housing having two entrances arranged to close the inner dip tube when the aerosol is operated in an upri...

A container for dispensing predetermined quantities of liquid comprises a first or primary container having a bottom portion, sidewall portion and open-ended neck portion. A second container comprising an elongated tubular substantially within the first container depending from the neck portion thereof. A third container disposed completely within the first container is integral with and disposed substantially concentrically around the second container. The third container comprises sidewall, bo...

A self priming mechanism for a dispenser comprising a container attachment and a dip tube sealer. The container attachment may comprise a screw threaded cap, a mounting cup or any of the customary means to mount a dispenser on a container and includes an upper dip tube sealer housing which communicates with a dispensing structure such as a pump or a dispensing valve. The dip tube sealer comprises a seal collar movable between an open and a closed position. The collar has a dip tube tail upon whi...

An aerosol device for dispensing a composition with relatively high viscosity, in particular a gel or an emulsion, comprises a can intended to be used with the head upwards, containing the composition and a propellant agent acting directly on the composition. A dispensing valve is in the upper part of the can on an opening of this can, while a dip-tube connected to the valve extends as far as the vicinity of the bottom of the can. The composition (C) to be dispensed has a viscosity (measured on ...

An improved dip tube for a hand operated dispensing device is disclosed comprising a longitudinally extending dip tube having an outer surface and an inner surface for defining a wall thickness therebetween. A plurality of surface projections protrude from the outer surface of the dip tube and extend longitudinally along the dip tube. The plurality of surface projections are uniformly disposed about the dip tube for defining a plurality of recessed portions therebetween. The plurality of surface...

An improvement in apparatus for dispensing mixtures of fluids having different vapor pressures, held under pressure in liquid and gas phases, in uniform proportions, from a pressurized container comprising the conventional elements of a pressure container, a perforated dip-tube extending within the pressure container through the vapor and liquid spaces of the container when charged and terminating in a closed free end in proximity to a wall of the pressure container, and means to provide control...