Abstract:
A directional dispensing package. The package includes a retaining opening into which a modular pump is snap-fit by inserting the modular pump through an open end of the package. The pump may also be sonically welded to the package. The package also includes a upstanding wall portion, which provides a dispensing actuator locking and sealing mechanism, and can include a tamper-evident tab. The package and pump are assembled at a production site, and are thereafter shipped to a filling site with a bottom portion. The package is filled through the open bottom end, and then the bottom portion is sealingly affixed to the package. The package may include an integrally-molded dip tube structure and a bottom portion with specific structure for allowing easy assembly while preventing leakage. The bottom portion may have an integrally molded dip tube structure. Various devices for allowing inverted dispensing are disclosed. Also, various devices for sealing the spray orifice are disclosed.
Abstract:
A method and apparatus for filling of a dispensing container with a product to be dispensed, particularly useful for highly viscous products, in which the container has a vented dip tube structure which is inserted into the container before it is filled. Filling is accomplished by inserting a filling nozzle into the container so that it cooperates with the top of the dip tube. Filling of the container therefore occurs through the dip tube. The vent in the dip tube structure allows the air in the container to be vented as the container is filled. Because the container is filled through the dip tube, the product completely fills the dip tube at the time when the pump structure is inserted into the container. The vent structure can be used as a vent for the container during a dispensing operation as well.
Abstract:
A method and apparatus for filling of a dispensing container with a product to be dispensed, particularly useful for highly viscous products, in which the container has a vented dip tube structure which is inserted into the container before it is filled. Filling is accomplished by inserting a filling nozzle into the container so that it cooperates with the top of the dip tube. Filling of the container therefore occurs through the dip tube. The vent in the dip tube structure allows the air in the container to be vented as the container is filled. Because the container is filled through the dip tube, the product completely fills the dip tube at the time when the pump structure is inserted into the container. The vent structure can be used as a vent for the container during a dispensing operation as well.
Abstract:
A dispensing head for a squeeze dispenser is disclosed. The dispensing head includes a mixing chamber where pressurized air and pressurized fluid are mixed to produce a fine spray. A valved gasketing arrangement is used to control the flow of air into the container and out of the dispensing head, as well as to control flow of liquid to the dispensing head and to prevent leakage when the dispenser is inverted. The dispensing head also includes a liquid flow control device. This device uses a spring-biased piston to shut off the liquid flow path when the liquid is not pressurized. The piston acts to seal off the liquid from the atmosphere, thus preventing drying or contamination of the liquid product. A collapsible bag is also disclosed for isolating the liquid in the container from the air in the container.
Abstract:
A pressurized dispenser which includes a container, a mounting cup with a central opening attached thereto, a dispenser having a body member forming a tank and an open top portion, a dispensing stem projecting through the central opening, the body retained in the mounting cup, and a diaphragm interposed between the body and the mounting cup sealing around the projecting stem. The body member forms a chamber having a diameter smaller than the diameter of the tank axially inward of the tank, to form a bottom in the tank at the point where the chamber begins. At least one hole is formed in the bottom radially outward of the chamber forming a path to the inside of the container. A piston-like member inserted into the tank extending to its bottom has a flange extending axially inward terminting in a sealingly lip sealing against the side of the tank at the bottom and an annular portion axially inward of the sealing edge forming a throat, with the valve stem extending through the throat. A cylindrical member concentric with the flange is sealed to and extends inwardly from the throat and engages the inner chamber in a sealing manner so as to seal off the annular space between the flange and the cylindrical member, this space being in communication with the hole permitting, during pressure filling, the flexing of the sealing lip away from the side of chamber to permit flow through the hole into the container.
Abstract:
In a dispensing actuator which includes a button rotatable between a dispensing and nondispensing position, between two stops, the button having a tab engaging the stops, to avoid overriding the stop in the dispensing position, the tab has an inwardly extending lip which abuts against the stop. The button also may include a flash burr formed on the outer circumference of the inner end of the button to frictionally engage the inside of the bore to permit automatic assembly of the actuator onto the container and valve without danger of the button falling out of the housing.
Abstract:
A vented pump and pre-loaded spring for dispensing liquid at a controlled rate from a container upon depression of a plunger or stem. A pump body extends within the container and houses the stem and piston. The lower end of the stem functions as an inlet valve. The piston is slidable on the stem between upper and lower stop limits and seals the outlet passage in the stem when the plunger is in a raised position. An initial downward movement of the plunger closes the inlet valve and then, after a slight build up of pressure within the pump chamber, moves the outlet passage downwardly of the piston into communication with the pump chamber below the piston. Continued downward motion of the stem moves the piston downwardly and expels the liquid through the outlet passage while maintaining a constant seal at the inlet valve. A sealing disc cooperates with the plunger or stem to prevent air from entering the container when the stem is in the raised position and to allow air to enter the container through a fluid vent passage formed between cooperating surfaces of the container, stem, disc and pump body when the stem is moved toward the down position. A variety of types of fluid vent passages are provided, such as, a plurality of rounded knurls on the outside surface of the pump body to assure an open fluid vent passage after the pump body is crimped to the container and provision is also made for use of a flange adaptor, with or without knurls, for non-crimping modes of constructing the pump assembly.
Abstract:
An improved plastic seal valve for the bottom of the chamber of a dispensing device in which a valve stem operates. The valve stem is hollow and contains a cross hole which is normally located just above an annular plastic seal made between the housing and the stem at the bottom of the tank, the cross hole porting the hollow stem, with the plastic seal allowing closer tolerances in manufacture of the stem and allowing greater accommodation for such distortions as may still occur in molding through flexibility in the bottom stem portion the stem having a taper that just release the sealing pressure and functions on the bottom seal as the upper seal closes. In addition a weaker spring may be used, thus, making it easier to operate the valve while at the same time obtaining improved sealing over the life of the valve.
Abstract:
An aerosol dispenser is formed from a metal drawn container with an open bottom and a mounting cup structure integrally formed in its top. A bottom piece is attached to the open bottom with a double seam and a dispensing device held in the mounting cup structure. In one embodiment the dispensing device is an anti-clog valve designed to clear all dispensing passages after each operation.
Abstract:
An attachment for an aerosol dispensing package includes an actuator having at least one cam and a mounting cap having an upstanding wall and at least one inner rim to engage the cam. The actuator includes a spray nozzle and a downwardly extending projection, in fluid communication with the spray nozzle, to sealingly engage an upwardly projecting stem of an aerosol valve when the actuator is in a dispensing position. The cam engages the inner rim to lower the actuator to the dispensing position and raise the actuator to the non-dispensing position. The upstanding wall at least partially surrounds the actuator, and includes a lateral opening adjacent to the spray nozzle when the actuator is in the non-dispensing position, and a spray opening adjacent to the spray nozzle when the actuator is in the dispensing position. A nozzle closure, having a projection fitting into the lateral opening and the spray nozzle, may be hingedly attached to the mounting cap. The nozzle closure projection may seal the spray nozzle when the actuator is in the non-dispensing position. Safety and tamper evident tabs may also be included.