公开(公告)号：US20190293113A1

公开(公告)日：2019-09-26

申请号：US16348555

申请日：2018-07-19

Applicant: CHEONGHOSYSTEM CO., LTD.

Inventor： Yongwoon PARK

IPC: F16C13/02 ,  F16C19/06

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.

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.

公开(公告)号：US20240091686A1

公开(公告)日：2024-03-21

申请号：US18370188

申请日：2023-09-19

Applicant: LG Electronics Inc. ,  Cheonghosystem Co. Ltd.

Inventor： Youngjae KIM ,  Soongy JEONG ,  Jingyu JI ,  Hyeonggeun KIM ,  Yongwoon PARK

IPC: B01D35/30 ,  B01D29/50 ,  C02F1/00

CPC classification number: B01D35/30 ,  B01D29/50 ,  C02F1/003 ,  B01D2201/303 ,  B01D2201/4023 ,  C02F2307/10

Abstract: A water purifier includes a water purifier main body having a front panel forming a front surface, first and second side panels forming both side surfaces, a top cover forming an upper surface, a rear cover forming a rear surface, and a base forming a bottom surface and in which a filter is accommodated; a fixed cover provided with an elevation space therein in a vertical direction and fixed to the upper surface of the water purifier main body, a water outlet nozzle exposed to a lower end of the fixed cover, and a filter housing disposed inside the water purifier main body and in which a filter accommodating groove in which the filter is accommodated is concave backward, and in which a downwardly concave filter groove is formed in the base to accommodate the lower end of the filter.

公开(公告)号：US20180318739A1

公开(公告)日：2018-11-08

申请号：US15738790

申请日：2017-10-26

Applicant: CHEONGHOSYSTEM CO., LTD.

Inventor： Yongwoon PARK

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

CPC classification number: B01D35/30 ,  B01D35/147 ,  B01D2201/302 ,  B01D2201/303 ,  B01D2201/304 ,  B01D2201/4061 ,  C02F1/001 ,  C02F2201/004

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.