US 11,744,371 B2
Chair device and star-shaped base thereof
Jianglin Wang, Huzhou (CN); Zhengxing Wang, Huzhou (CN); and Hermann Bock, Huzhou (CN)
Assigned to HENGLIN HOME FURNISHINGS CO., LTD., Zhejiang (CN)
Appl. No. 17/612,576
Filed by HENGLIN HOME FURNISHINGS CO., LTD., Zhejiang (CN)
PCT Filed May 8, 2020, PCT No. PCT/CN2020/089197
§ 371(c)(1), (2) Date Nov. 19, 2021,
PCT Pub. No. WO2020/233417, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 10 2019 113 235.5 (DE), filed on May 20, 2019; and application No. 202010378589.4 (CN), filed on May 7, 2020.
Prior Publication US 2023/0083858 A1, Mar. 16, 2023
Int. Cl. A47C 7/00 (2006.01); A47C 3/025 (2006.01); A47C 9/00 (2006.01)
CPC A47C 7/004 (2013.01) [A47C 3/025 (2013.01); A47C 7/006 (2013.01); A47C 9/002 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A star-shaped base for a chair device, comprising a center seat and a plurality of extending arms mounted on the center seat, the extending arms being used to place the star-shaped base on a ground, wherein: at least one of the extending arms is hinged to the center seat and rotates relative to the center seat,
wherein: rotation of one or all of the extending arms is locked by a locking element; and
the locking element is an annular locking element mounted on the center seat, rotation of all of the extending arms are simultaneously locked; when the locking element rotates around a longitudinal axis direction of a chair column relative to the center seat to a locked position, a braking element on the locking element is embedded between the center seat and the extending arms, thereby blocking the rotation of the extending arms relative to the center seat.