US 11,877,973 B2
Massage ball assembly with separate tilting frame and massage chair with massage ball assembly applied
Kyung Hwan Park, Seoul (KR); and Yeon Soo Seong, Seoul (KR)
Assigned to COWAY CO., LTD., Gongju-si (KR)
Appl. No. 16/978,500
Filed by COWAY CO., LTD., Gongju-si (KR)
PCT Filed Mar. 5, 2019, PCT No. PCT/KR2019/002529
§ 371(c)(1), (2) Date Sep. 4, 2020,
PCT Pub. No. WO2019/172612, PCT Pub. Date Sep. 12, 2019.
Claims priority of application No. 10-2018-0025766 (KR), filed on Mar. 5, 2018.
Prior Publication US 2020/0397651 A1, Dec. 24, 2020
Int. Cl. A61H 15/02 (2006.01); A61H 15/00 (2006.01)
CPC A61H 15/02 (2013.01) [A61H 2015/0007 (2013.01); A61H 2015/0028 (2013.01); A61H 2201/0149 (2013.01); A61H 2201/0207 (2013.01); A61H 2201/0228 (2013.01); A61H 2201/1669 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A massage ball assembly for a massage chair, the massage ball assembly comprising:
a massage bundle mounted on a backrest portion of the massage chair;
a main frame mounted on the massage bundle and including a first main frame extending toward a first side from a position mounted on the massage bundle and a second main frame extending towards a second side;
a first tilting frame mounted at an end of the first main frame and rotatably mounted with respect to the first main frame with a mounted position of the first tilting frame as an axis of rotation;
a second tilting frame mounted at an end of the second main frame and rotatably mounted with respect to the second main frame with a mounted position of the second tilting frame as an axis of rotation;
a first massage ball mounted on one end of the first tilting frame and rotatably mounted with respect to the first tilting frame;
a second massage ball mounted on one end of the second tilting frame and rotatably mounted with respect to the second tilting frame;
a first elastic member having a first end connected to the first tilting frame and a second end connected to the main frame; and
a second elastic member having a first end connected to the second tilting frame and a second end connected to the main frame.