Pump chamber dispenser
Patent 4804115 Issued on February 14, 1989. Estimated Expiration Date: 
April 29, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 29, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorAssigneeApplicationNo. 07/188298 filed on 04/29/1988US Classes:222/209, Fluid pressure generating pump or pulsator and/or removable flexible wall closures222/145.3, Dispensed product retains identity of individual material (e.g., striped toothpaste)222/260, Follower and impeller coaxial or parallel and interconnected222/376With plural-point inlet to casingExaminersPrimary: Shaver, KevinAttorney, Agent or FirmInternational ClassB05B 11/00 (20060101)Foreign Application Priority Data1987-04-29 GBAbstractA pump chamber dispenser is arranged for producing a striped or otherwise striated product from two or more differently-colored product components held in its variable-volume reservoir (22). For each component the dispenser has at least one inlet port (20) to the pump chamber (21) and at least one exit port (44) for each inlet port. Having passed separately through the exit ports the components ae ducted by galleries (61) to the base of a dispensing spout (68), where they are recombined as desired to form the multicomponent product.Field of SearchPlural container and/or compartmentPLURAL SOURCES, COMPARTMENT, CONTAINERS AND/OR SPACED JACKET Single, operable on material from all sources Unitary reciprocating With discharge assistant for each source Supply container delivering to receiving chamber Fluid pressure generating pump or pulsator and/or removable flexible wall closures With flow controllers or closures Resilient wall actuated Pumps only Follower combined with casing enclosed impeller Interconnected with movable nozzle Utilizing fluid pressure and/or motor Follower and impeller coaxial or parallel and interconnected Follower and impeller coaxial or parallel and interconnected Valve outlet For reciprocating piston on follower-type impeller Biasing means within material chamber or passage Pump or pulsator casing within supply container Container with follower Valved outlet, movable discharge guide and/or gas vent | |
