Dispenser for pasty substances
Patent 4474313 Issued on October 2, 1984. Estimated Expiration Date: 
November 6, 2001. 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.
November 6, 2001. 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 2679337 2789337 3088636 3870200 Fluid dispenser Patent #: 4087024 InventorAssigneeApplicationNo. 06/318723 filed on 11/06/1981US Classes:222/211, Internally extending outlet pipe222/386, Container with follower222/405, Discharge of material from top of supply222/464.1, INTERNALLY EXTENDING OUTLET PIPE401/146, In or at feeder401/150, Piston in cylinder401/176Slidable pistonExaminersPrimary: Rolla, Joseph J.Assistant: Huppert, Michael S. Attorney, Agent or FirmInternational ClassB65D 83/00 (20060101)Foreign Application Priority Data1980-11-08 DEAbstractA dispenser for pasty substances with a housing having a piston displaceable only in a discharging direction and an outer operating handle which is formed at a headpiece, compressible in a bellows-like manner in the direction of the piston, which headpiece has a dispenser-outlet opening. A tubule with an inner open end in every position of the bellows immersed in the pasty substance, extends inwardly from the dispenser-outlet opening.Field of SearchRESILIENT WALLSupply container delivering to receiving chamber Internally extending outlet pipe Resilient wall actuated Container with follower Valved outlet, movable discharge guide and/or gas vent Fluid pressure actuated Discharge of material from top of supply Deformable discharging elements Nonmetallic | |
