Airless Pump and Cosmetic Container Having the Same

• US 20120267398A1
• Filed: 10/06/2011
• Published: 10/25/2012
• Est. Priority Date: 04/25/2011
• Status: Active Grant

• Current Assignee: Toly Korea Inc.
• Original Assignee: Toly Korea Inc.
• Inventors: Lim, Jun-Kuk
• Granted Patent: US 8,631,975 B2
• Time in Patent Office: Days
• US Class Current: 222/256
• CPC Class Codes: A45D 2200/055 Piston or plunger for supplying the liquid to the applicator
• CPC Class Codes: A45D 2200/057 Spray nozzles; Generating atomised liquid
• CPC Class Codes: A45D 34/04 Appliances specially adapted for applying liquid, e.g. using roller or ball
• CPC Class Codes: B05B 11/1011 without substantial movement of the nozzle in the direction of the pressure stroke
• CPC Class Codes: B05B 11/1014 the pump chamber being arranged substantially coaxially to the container
• CPC Class Codes: B05B 11/1025 a spring urging the outlet valve in its closed position B05B11/1026 takes precedence
• CPC Class Codes: B05B 11/1047 the pump being preassembled as an independent unit before being mounted on the container
• CPC Class Codes: B05B 11/1073 Springs

Abstract

An airless pump and a cosmetic container including the same. The airless pump includes a nozzle of a head and a compression cylinder disposed between the storage container and the nozzle. A sealing cap fixes the compression cylinder. A piston valve and a piston are fastened into an inner compression chamber inside the compression cylinder. An operation pipe is disposed above the sealing cap in a direction perpendicular to the direction in which an operation button is pushed. The operation pipe is actuated and drives the piston and piston valve in the perpendicular direction. A spring is disposed between the operation pipe and the sealing cap. A slider axially is axially coupled to the operation pipe in the perpendicular direction. The slider is actuated by the operation button to horizontally reciprocate in a direction, thereby driving the operation pipe in the perpendicular direction.

Claims

1. An airless pump comprising:

a nozzle of a head, wherein content in a storage container is dispensed through the nozzle;

a compression cylinder disposed between the storage container and the nozzle, wherein the compression cylinder has a compression chamber communicating with the storage container;

a sealing cap fixing the compression cylinder;

a piston valve and a piston fastened into the compression chamber inside the compression cylinder;

an operation pipe disposed above the sealing cap in a direction perpendicular to a direction in which an operation button is pushed, wherein the operation pipe is actuated to move, thereby driving the piston and piston valve to move in the direction perpendicular to the direction in which the operation button is pushed;

a spring disposed between the operation pipe and the sealing cap; and

a slider axially coupled to the operation pipe in a direction perpendicular to the operation pipe, wherein the slider is actuated by the operation button to horizontally reciprocate in one direction, thereby driving the operation pipe in the direction perpendicular to the direction in which the operation button is pushed.

2. The airless pump of claim 1, wherein the sealing cap is fastened into an opening of the storage container,

wherein the sealing cap has guide walls in upper portions thereof, the guide walls being formed parallel to each other, the slider fastened to the guide walls such that the slider is movable back and forth, and

wherein the piston and the operation pipe are fastened into the center hole of a central portion in the direction perpendicular to the direction in which the operation button is pushed, thereby realizing upward and downward motion.

3. The airless pump of claim 1, wherein the operation pipe is fastened into the sealing cap such that the operation pipe is actuated in the direction perpendicular to the direction in which the operation button is pushed, and has a hinge shaft on an outer circumference thereof and a support rod integrally formed in a lower portion thereof, the support rod actuating the piston valve, whereby the operation pipe is actuated to move in the direction perpendicular to the direction in which the operation button is pushed in response to reciprocal motion of the slider.

4. The airless pump of claim 1, wherein the slider has a fastening hole in a portion thereof, the operation button being fastened into the fastening hole, and slide wings in both sides thereof, the slide wings being guided along guide walls of the sealing cap, wherein a shaft hole is formed in each of the slide wings at an incline of 45°

such that a hinge shaft of the operation pipe is coupled to the shaft hole, wherein the slider converts a force that has been applied by the operation button in the direction perpendicular to the direction in which the operation button is pushed, thereby actuating the operation pipe to move up and down.

5. A cosmetic container comprising:

an inner shell having an opening in an upper portion thereof and a push plate therein, wherein the push plate is fastened to an inner circumference thereof and pushes content to be dispensed;

an outer shell fastened to the inner shell from outside in order to protect the inner shell;

a head fastened to an upper portion of the outer shell, wherein the head has a usage recess with a concave upper surface, a nozzle formed in a central portion of the usage recess, and an operation button in an outer circumferential portion thereof, wherein the operation button is pushed in a horizontal direction;

an airless pump provided inside the head and connecting the inner shell and the nozzle such that the inner shell and the nozzle communicate with each other, wherein the airless pump converts power that has been produced when the operation button is pushed into a direction perpendicular to a direction in which the operation button is pushed in order to pump the content from the inner shell; and

a nozzle-opening/closing means disposed between an upper portion of the airless pump and the nozzle in order to open/close the nozzle in a stroke that is same as an operation of the airless pump.

6. The cosmetic container of claim 5, wherein the usage recess in an upper surface of the head is concave and soft, wherein the content is dispensed through the nozzle, which is formed in the central portion of the usage recess.

7. The cosmetic container of claim 5, wherein the nozzle-opening/closing means includes a nozzle-opening/closing rod fixedly fastened to the operation pipe above the airless pump in the direction in which the operation button is pushed, wherein the nozzle-opening/closing rod comprises a pipe having a hemispherical upper end and an open lower end, the pipe of the nozzle-opening/closing rod defining a dispensing passage therein, wherein a dispensing hole communicating with the dispensing passage is formed in an upper portion of the nozzle-opening/closing rod, wherein the nozzle-opening/closing rod is actuated in the direction in which the operation button is pushed in the stroke that is same as the operation of the airless pump in order to open and close the nozzle.