Abstract:
In one embodiment, an arrangement for assembly to a squeeze bottle having a threaded neck with an opening at its outer end upon filling of the bottle is provided. The squeeze bottle has a dispensing nozzle unit adapted to be fixedly inserted into the opening and the nozzle unit includs a lower cylindrical part terminating in a flange at its outer end. A washer, through which the cylindrical part is adapted to extend, is interposed between the flange and the outer end of said neck with a hinged tab formed as part of and extending from the washer. Also included is a cover for the nozzle having internal threads to screw onto the neck. The cover has a recess formed therein, the recess having a vertical wall, such that, when said cover is screwed on the neck, the hinged tab will have a portion abutting the wall and preventing movement, unless the tab is pushed in so that the portion clears the wall.
Abstract:
Nozzle closures which are mounted for pivoting movement from a closed to an open position are used with a spray dispensing device. In the open position, the nozzle closure moves away from the spray nozzle on an actuator and a spray opening in a surrounding wall, allowing fluid to dispensed through the nozzle, as the actuator is depressed. In the closed position, the nozzle closure pivots into a position where a projection enters at least partially into the spray nozzle. The projection acts to seal the spray nozzle against air, thereby preventing drying of any fluid in the nozzle and reducing the chance that the spray nozzle will become clogged. The projection also serves to provide resistance against depression of the actuator, thereby providing a locking function for the actuator to prevent accidental discharge from the spray nozzle. The sealing finger completely covers a spray opening in a wall surrounding the actuator.
Abstract:
An apparatus for providing variable doses and variable spray patterns for a dispensing pump is disclosed. The actuator assembly can include two spray nozzles with different spray patterns, and a mechanism for allowing fluid communication between the pump interior and either one or the other of the two spray nozzles. The actuator assembly also includes a mechanism which limits the downstroke of the pump piston by providing a stop mechanism which limits downward depression of the actuator assembly.
Abstract:
An improved drainage tank assembly for a metered dispenser which includes a metering tank secured within a mounting cup, the mounting cup adapted to be secured to a container. The drainage tank includes a sealing portion which seals the interior of drainage tank from the mounting cup to prevent both corrosion of the mounting cup and contamination of the product dispensed. The drainage tank further includes radially extending ribs which extend from an interior surface of the drainage tank toward an outside surface of the metering tank to limit axial displacement of a band seal mounted on the outside surface of the metering tank.
Abstract:
An improved collapsible container includes an outer rigid portion with a flange and a downwardly extending flexible bag portion so as to permit ease of filling, sealing and transport. Dispensing is done, preferably with a pump which, on first actuation, breaks the seal on the container. The pump, and a rigid outer container with which the collapsible container is used, are adapted for reuse with only the collapsible container and its contents replaced.
Abstract:
A dispenser package has an outer case which is open on one end and which receives, in its other, partially closed, end, a snap-fitted dispenser assembly. The actuating stem of the dispenser extends out of a small opening in the end of the outer case to which the dispenser is fitted. A closely fitted inner container is filled with the fluid product to be dispensed and is then press fitted into the outer case, provision being made to vent the trapped air during assembly. The inner end of the inner case is seated against the dispenser assembly and so provides additional direct support for maintaining the dispenser in place.
Abstract:
A pressurized dispenser including a container, a mounting cup having a central opening therein, said mounting cup attached to said container, a dispensing means comprising a body member forming a tank and having an open top portion with a dispensing stem projecting therefrom through said central opening in said mounting cup, said body retained in said mounting cup, and a diaphragm interposed between said body and said mounting cup, sealing around said projecting stem at least when said stem is in an unoperated position, a passageway is formed in the body extending across the top of said body and through the body, the passage in communication with the tank in the area below the diaphragm, an annular gasket is interposed between the mounting cup and container, the gasket having an opening with the same profile as the outside of the body disposed so as to seal against the body to interrupt communication between the passageway and container, so that, during pressure filling, when pressure medium is supplied to the area of the tank below said diaphragm it flows across the top of the body and through the body to the gasket, deforms the gasket away from the side of said body permitting flow into said container at a fast rate.
Abstract:
A triple seal valve member for an atomizing pump dispenser which includes an integrally molded plastic valve member having an outer portion terminating in a sealing tip for sealing against an axial outlet port, the outer part being of a first cross section; an inner part containing therein a hollow recess open at its inner end for accepting a biasing spring, the inner part of a larger cross section than the outer part, the radially outer portion of the inner part adapted to seal against an opening at the inner end of a pump chamber; an intermediate portion forming a generally cylindrical recess between the inner and outer portions, the recess in communication with the hollow recess in the inner portion; a narrowed throat formed at the area of communication between the hollow recess and the cylindrical recess; said intermediate portion having openings therein in the vicinity of its outer end permitting communication between the cylindrical recess and the area above the said inner portion; with a ball having a diameter which is less than the diameter of the cylindrical recess but greater than the diameter of the throat snapped into the cylindrical recess to thereby form therewith a check valve. Also disclosed is a pump using the valve member.
Abstract:
Various means for controlling the rate of travel of a plunger through a pump chamber in a dispensing pump are disclosed including an arrangement in which a cap is slidably mounted to the upper end of the pump plunger and a spring interposed between the cap and plunger with a detent mounted on the container contacting the plunger to prevent downward motion so that as the cap is depressed it is moved downwardly relative to the plunger preloading the spring and in which, after a predetermined degree of motion of the cap relative to the plunger, the lower end of the cap releases the detent to that the preload expands driving the plunger downwardly at a uniform rate. In another illustrated embodiment a preload spring is disposed within the pump between a plunger stem and plunger piston, the hydraulic forces within the pump chamber permitting the spring to be compressed before an outlet passage is opened, the spring once again acting to permit uniform discharge. In another embodiment, detents inside the pump cause an operator to build up a certain amount of finger pressure to overcome the detents whereby, the pressure having been built up in the finger, the operator will smoothly and quickly discharge material.