Dispenser for metering proportionate increments of polymerizable materials
Patent 4747517 Issued on May 31, 1988. Estimated Expiration Date: 
March 23, 2007. 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.
March 23, 2007. 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 2941697 2982396 3159312 3266671 3323682 3462008 3519250 Stabilized dentrifice containing initially physically separated normally reactive components Dispensing container of stabilized extrudable dentifrice containing normally chemically reactive components Compartmental cartridge InventorApplicationNo. 07/029275 filed on 03/23/1987US Classes:222/137, Unitary reciprocating206/219, FOR MIXING206/221, Means to manipulate without rupture222/145.1, With common discharge222/145.6, Including mixing means222/256, Follower combined with casing enclosed impeller222/327, Part of cartridge or removable container99/339Diverse cooker typesExaminersPrimary: Rolla, Joseph J.Assistant: Pedersen, Nils E. Attorney, Agent or FirmInternational ClassB65D 83/00 (20060101)AbstractExtrudable materials that polymerize when mixed can be stored in a dispenser that has no internal valve and contains a tubular cavity of uniform cross section and a piston with which the materials can be incrementally extruded. The polymerizable materials are separated by a barrier layer extending between the polymerizable materials over the length of the cavity. The material of the barrier layer is insoluble in each of the polymerizable materials while being dispersible in a mixture of them. The polymerizable materials and the material of the barrier layer have sufficiently similar rheologies at the temperature at which they are to be extruded from the dispenser to ensure against intermixing until after they emerge from the outlet.Other References
Field of SearchSingle, operable on material from all sourcesWith discharge assistant for each source PLURAL SOURCES, COMPARTMENT, CONTAINERS AND/OR SPACED JACKET Unitary reciprocating Follower combined with casing enclosed impeller Follower and impeller coaxial or parallel and interconnected Insertable cartridge or removable container With follower Part of cartridge or removable container With material supply container and discharge assistant with casing (e.g., supply container and pump) Container with follower | |
