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US 9,308,541 B2Granted
Pump-dispensing container
AssigneeDaiwa Can Company
InventorsShoji Uehria, Tomoko Okada, Kazuya Abe, Osamu Yoshida
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AssigneeDaiwa Can Company
InventorsShoji Uehria, Tomoko Okada, Kazuya Abe, Osamu Yoshida
Estimating the term…
The object of the present invention is to improve a pump-dispensing container structured to prevent leakage of liquid caused by slight vertical movements of the nozzle head, to make it easier to push out the liquid when the nozzle head is pressed down first from its highest position. If a primary check valve is configured to open the connection between the inside of the liquid chamber and the inside of the container body in a state in which the liquid chamber is filled with a liquid and the nozzle head is raised to its highest position, when the nozzle head is pressed down from its highest position to push out the liquid, resistance met during the pressing down of the nozzle head is significantly reduced because of the open connection between the inside of the liquid chamber and the inside of the container body, and the liquid can be pushed out easily by applying a small force.
A pump-dispensing container including a container body and a dispensing pump body mounted on the opening of the container body, discharging a liquid contained in the container body from a discharge opening provided in a nozzle head portion disposed in the upper part of the dispensing pump body when the nozzle head portion is moved up and down, wherein the dispensing pump body includes:
A pump-dispensing container including a container body and a dispensing pump body mounted on the opening of the container body, discharging a liquid contained in the container body from a discharge opening provided in a nozzle head portion disposed in the upper part of the dispensing pump body when the nozzle head portion is moved up and down, wherein the dispensing pump body includes:
A pump-dispensing container including a container body and a dispensing pump body mounted on the opening of the container body, discharging a liquid contained in the container body from a discharge opening provided in a nozzle head portion disposed in the upper part of the dispensing pump body when the nozzle head portion is moved up and down, wherein the dispensing pump body includes:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through…
With disturbing means promoting mixing, e.g. balls, crowns: including sieves, porous members or the like
Components or details: springs
Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through…
About 6 years 4 months of term left · ends 28 Feb 2033 (estimated)
This application claims the benefits of priority from Japanese Patent Application No. 2012-25857, dated Feb. 9, 2012, the contents of which are hereby incorporated by reference into this application.
The present invention relates to pump-dispensing containers, and more specifically, to improvement of the usability of a pump-dispensing container that prevents leakage of liquid caused by slight vertical movements of a nozzle during transportation or the like.
Conventionally known pump-dispensing containers discharge a liquid contained in a container body from a discharge opening at the tip of a nozzle head disposed hi the upper part of the container body when the nozzle head is moved up and down. That type of pump-dispensing container usually has a liquid chamber (a gap between a cylinder and a piston) in a dispensing pump body and has a primary check valve and a secondary check valve respectively at the upstream end (on the container body side) and at the downstream end (on the discharge opening side) of the liquid chamber. When the nozzle head is raised, the secondary check valve is closed to depressurize the liquid chamber, and the depressurization opens the primary check valve, through which the liquid in the container body flows into the liquid chamber. When the nozzle is lowered, the liquid chamber is pressurized with the primary check valve kept closed, and the pressurization opens the secondary check valve, through which the liquid that has filled the liquid chamber is discharged from the discharge opening.
FIG. 1 is a sectional view (sectional front view) of a dispensing pump body 10 of a pump-dispensing container according to a first embodiment of the present invention (with the nozzle head in its factory-set highest position).
FIG. 2 is a view illustrating operation states of the pump-dispensing container according to the first embodiment of the present invention (with a polypropylene-resin ball valve) when the nozzle head is moved.
FIG. 3 is a view illustrating (for comparison) operation states of a conventional pump-dispensing container (using a stainless-steel ball valve) when the nozzle head is moved.
10: Dispensing pump body 12: Tube body 20: Base cap portion 22: Nozzle head 24: Double cylinder (24A: Liquid cylinder, 24B: Air cylinder) 26: Liquid piston 28: Air piston 30: Ball valve 32: Tubular engagement part 34: Elastic valve body 36: Porous material holder 38: Rod-shaped valve body
Preferred embodiments of the present invention will be described next with reference to the drawings. Pump-dispensing containers in the embodiments described below are foam dispensing containers which mix air and a foaming liquid in the container and push it out in the form of foam, but the present invention is not limited to those types of foam dispensing containers and also relates to foam dispensing containers that push the liquid out of the container body.
Structure of Pump-Dispensing Container