CHECK VALVE FOR PUMP CONTAINER

WIPO Patent Application WO/2024/080408

A1

The present invention relates to a check valve for a pump container, the check valve including: a pump body (200); a cylinder (210) in which the pump body (200) is installed; and a check valve (30) installed on the bottom surface inside the cylinder (210), wherein the check valve for a pump container is characterized by including: an outlet hole (31) which is a cylindrical member having open upper and lower portions and of which the upper surface has a long diameter portion (31a, large diameter) and a short diameter portion (31b, small diameter); a pair of coupling protrusions (32) which correspond to portions enlarged at the lower portion of the outlet hole (31), protrude toward the long diameter portion (31a) of the outlet hole (31) to be coupled to an inner circumferential surface of the cylinder (210), and close the outlet hole (31); and a lower coupling part (34) for forming a lower hole (33) on an inner circumferential surface of the lower surface and coupled to an inner circumferential surface of the cylinder (210) of the pump body (200). As such, the present invention is manufactured by molding the outlet hole on the upper portion of the check valve so that there is no need to separately form an outlet hole, that is, a cut, and simply assembling the check valve into the cylinder enables the outlet hole having a cut-like shape to be formed, thus showing an effect of improving manufacturing efficiency, that is, reducing manufacturing costs.

KANG SUNG IL (KR)

PCT/KR2022/015474

April 18, 2024

October 13, 2022

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KANG SUNG IL (KR)

B05B11/00

JP2001510272A	2001-07-31
KR101590865B1	2016-02-02
JP2016503867A	2016-02-08
KR20030080213A	2003-10-11
US20080066815A1	2008-03-20

KWAK, Young Mok et al. (KR)

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