Dispenser for striped viscous products
Patent 4715518 Issued on December 29, 1987. Estimated Expiration Date: 
October 3, 2006. 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.
October 3, 2006. 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 References 2341031 2944705 3405845 Dispenser utilizing a follower and delivery device for dispensing pastes, creams, etc. Toothpaste dispenser Striping dispenser Dispenser for paste-like products Patent #: 4511068 InventorAssigneeApplicationNo. 06/926853 filed on 10/03/1986US Classes:222/257, Interconnected with movable nozzle222/260, Follower and impeller coaxial or parallel and interconnected222/320, With movable nozzle interconnected therewith222/340, For reciprocating piston on follower-type impeller222/386Container with followerExaminersPrimary: Skaggs, H. GrantAttorney, Agent or FirmInternational ClassesB65D 35/24 (20060101)B65D 83/00 (20060101) AbstractIn a manually operated dispenser especially suited for striped toothpaste products and the like the reciprocable pumping piston is provided with a concave, product-engaging face that gently, yet forcibly, directs the product in a smooth, laminar flow out of the pump chamber and into the discharge spout when the piston is depressed through a pumping stroke so that stripes in the ribbon of toothpaste issuing from the spout are well defined and maintained in an aesthetically pleasing manner. The cooperating floating takeup piston at the opposite end of the chamber from the pumping piston is provided with a convex dome that becomes complementally received within the concavity of the pumping piston when the contents of the dispenser are nearly depleted, thereby maximizing the degree to which the dispenser is emptied.Field of SearchFollower combined with casing enclosed impellerFollower and impeller coaxial or parallel and interconnected Container with follower Valved outlet, movable discharge guide and/or gas vent Intermittent grip-type actuator Plural container and/or compartment Interconnected with movable nozzle For reciprocating piston on follower-type impeller | |
