Patent AU-2022100037-A4 (AU)
Title: Chair, especially an office chair, and method for regularly repetitive movement of a seat surface of a chair
Inventor: RECSKI JÁNOS
IPC: A47C9/00
Filed: 2022-02-23
Granted: 2022-03-24
Abstract: The invention relates to a chair, in particular an active office chair, comprising a base portion 
(2), a seat surface (3) with a backrest (4), and a support member adapted for connecting the 
seat surface (3) to the base portion (2). The invention furthermore relates to a method for 
bringing into motion, in a periodically repeating manner, the seat surface (3) of a chair, in 
particular an active office chair, the office chair comprising a base portion (2), a seat surface 
(3) with a backrest (4), and a support member adapted for connecting the seat surface (3) to 
the base portion (2). The chair according to the invention is characterised in that the support 
member situated between the base portion (2) and the seat surface (3) is formed of an 
adjustment and fixing means (8) that is adapted for adjusting the height of the seat surface (3) 
and is connected to a mounting plate (5) disposed under the seat surface (3), and means (6, 7) 
that are disposed symmetrically beside the adjustment and fixing means (8) and are adapted 
for moving the seat surface (3), where the means (6, 7) adapted for moving the seat surface 
(3) and the height adjustment and fixing means (8) are connected to the mounting plate (5) 
carrying the seat surface (3) of the chair (1) by articulated members (9, 10), with the moving 
members (6, 7) adapted for moving the seat surface (3) being connected to the base portion 
(2) by means of resilient connecting members (13), the chair further comprising a connecting 
member (11, 12) adapted for connecting the height adjustment and fixing means (8) to the 
articulated members (9, 10), a power supply adapted for supplying power to the means (6, 7, 
8) disposed in the base portion (2), and a control unit adapted for operating the means (6, 7, 
8). The method according to the invention is characterised in that, in the chair applied for 
carrying out the method the support member situated between the base portion (2) and the 
seat surface (3) is formed of an adjustment and fixing means (8) that is adapted for adjusting 
the height of the seat surface (3) and is connected to a mounting plate (5) disposed under the 
seat surface (3), and means (6, 7) that are disposed symmetrically beside the adjustment and 
fixing means (8) and are adapted for moving the seat surface (3), where the means (6, 7) 
adapted for moving the seat surface (3) and the height adjustment and fixing means (8) are 
connected to the mounting plate (5) carrying the seat surface (3) of the chair (1) by articulated 
members (9, 10), with the moving members (6, 7) adapted for moving the seat surface (3) 
being connected to the base portion (2) by means of resilient connecting members (13), the 
chair further comprising a connecting member (11, 12) adapted for connecting the height 
adjustment and fixing means (8) to the articulated members (9, 10), a power supply adapted 
for supplying power to the means (6, 7, 8) disposed in the base portion (2), and a control unit 
18507337_1 (GHMatters) P118394.AU
adapted for operating the means (6, 7, 8), the method comprising the step of bringing the seat 
surface into motion in a periodically repeating manner by means of a control program, stored 
in the control unit, that is configured according to the needs of the occupant seated on the seat 
surface (3).  
18507337_1 (GHMatters) P118394.AU
WO 2021/019263 33PCT/HU2020/000024 
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