公开(公告)号：US10751653B2

公开(公告)日：2020-08-25

申请号：US15738790

申请日：2017-10-26

Applicant: CHEONGHOSYSTEM CO., LTD.

Inventor： Yongwoon Park

IPC: B01D35/30 ,  B01D35/147 ,  C02F1/00

Abstract: Provided is a head assembly for a water purification filter, which includes a head body, a rotation shaft, and a fastening cap. In particular, the rotation shaft is rotated in the state of being placed on a seat protrusion formed on the head body, and a lower seal member is disposed in the portion where the rotation shaft is placed on the seat protrusion. Accordingly, there can be prevented a problem in which the lower seal member departs from a predetermined location during the coupling of the rotation shaft to the head body so that defective assembly occurs.

公开(公告)号：US10662997B2

公开(公告)日：2020-05-26

申请号：US16348555

申请日：2018-07-19

Applicant: CHEONGHOSYSTEM CO., LTD.

Inventor： Yongwoon Park

IPC: F16C13/02 ,  F16C19/06 ,  F16C13/00 ,  F16C35/063

Abstract: Provided is a roller assembly for a storage device. The roller assembly includes a shaft member, a rolling member, a cover member, and ball members. In particular, the ball members are configured to perform a rolling operation while being maintained in the state of being seated at specific locations by a seating groove formed in the shaft member and guide grooves formed in the rolling member and the cover member, and the rolling member and the cover member are configured to be coupled to each other by a fitting method and are then completely coupled to each other through laser bonding. The roller assembly is additionally characterized in that the damage of the ball members is prevented from occurring during the above laser bonding.