US 12,226,029 B2
Chair with a tilting backrest
Giancarlo Piretti, Bologna (IT)
Assigned to Pro-Cord S.p.A., Bologna (IT)
Filed by Pro-Cord S.p.A., Bologna (IT)
Filed on Mar. 7, 2023, as Appl. No. 18/179,453.
Claims priority of application No. 102022000004454 (IT), filed on Mar. 9, 2022.
Prior Publication US 2023/0284784 A1, Sep. 14, 2023
Int. Cl. A47C 7/44 (2006.01)
CPC A47C 7/44 (2013.01) 9 Claims
OG exemplary drawing
 
1. A chair comprising:
a base structure,
a seat carried by the base structure, and
a backrest movable relative to the seat between a rest position and a rearward inclined position,
wherein the backrest has a connecting portion having a front surface and a rear surface,
wherein the seat has first and second guide surfaces which guide, respectively, the front surface and the rear surface of said connecting portion of the backrest, and
wherein the front surface and the rear surface and said first and second guide surfaces are cylindrical surfaces having a common transverse axis.