Abstract: A foaming system 10 includes a dual aspirator 13. The dual aspirator 13 has first and second aspirators 80 and 81 to pick up a first and second chemical concentrate. The diluent first chemical mixture is drawn in through the first aspirator 80 and goes through a first diffuser 46 where the first chemical/diluent mixture is further mixed. Similarly, diluent/chemical mixture is drawn by the second aspirator 81 and flows through a second diffuser 47 where it also is mixed. The two diluent/chemical mixtures then combine after exiting the diffusers and the compatible chemicals are then mixed by the flow of the diluent/chemical mixtures. Flushing lines 68 and 71 provide for cleaning of the dual aspirator 13. Further, the diffusers have a ratio of their diameter to length to aid in the prevention of contamination along with the use of two check valves 48 and 49.

Abstract: A system for diluting and dispensing concentrated liquid products is disclosed. The system includes a dispensing device (10, 150) containing a removable proportioning means such as an aspirator assembly (40, 154). A concentrate pickup tube (114) attaches to the dispensing device and is in fluid communication with the aspirator assembly. The dispensing device can utilize a rigid outlet tube (20, 159) which is removably attached to nozzle tip (18, 158) for dispensing to large containers. Also disclosed is a method for diluting and dispensing chemical solutions using the dispensing device of the invention.

Abstract: A system for proportioning and dispensing concentrated liquid products is disclosed. The components of the system's first embodiment are mounted upon a cart (12). A concentrate solution tube (14) is interconnected to a dilution assembly (61) containing an aspirator (26). A water supply assembly (69), containing a valve (75) and backflow preventer (74), is connected to the aspirator assembly (26) when dilution of the concentrated product (13) is desired. A discharge tube (68) carries the diluted product from the aspirator assembly (26) to a container (60). The system's second embodiment has a spray gun assembly (150) containing an aspirator (167), a valve (166), and preferably though not necessarily, a backflow preventer (165). The concentrate pickup tube (114) attaches to the spray gun assembly (150) with a releasable connector (170). The spray gun assembly has a rigid delivery tube (153) for dispensing to large containers (160), and a nozzle tip (180) for attachment to an inlet port (119) of a jug (111).

Abstract: An apparatus and method for testing the flow characteristics of molding compounds includes upper and lower mold portions movable relative to one another. The lower mold portion has formed therein a central cavity and a channel extending therefrom with scribe marks formed on a bottom wall of the channel. The upper mold portion has a complimentary raised area for cooperation with the cavity and the channel to force molding compound placed in the cavity to flow down the channel providing an indication of the flow characteristics of the molding compound. Ejector pins positioned in the bottom of the cavity and the channel are actuated by an ejector pin plate which is coupled to the upper mold portion to eject the sample when the mold portions are separated.