Chair with seat capable of tilting

Application Number: 00117987
Application Date: 2000.06.02
Publication Number: 1276190
Publication Date: 2000.12.13
Priority Information: 1999/6/4 IT TO99A000477
International: A47C3/026;A47C1/032
Applicant(s) Name: Pro-Keder S. P. A.
Inventor(s) Name: G. Piretti
Patent Agency Code: 72001
Patent Agent: zhou beilin
Abstract Tilting seat chair, comprising: a base structure (16) bearing a transverse tilting axis (24), a seat support structure (14), tiltably mounted about the said transverse tilting axis (24), elastic means (32) capable of opposing the seat tilting motion, and means of adjustment (42) for varying the force opposing the said elastic means (32). The aforesaid elastic means comprise a torsion bar (32) connecting the seat support structure (14) to the base structure (16) in a tilting manner about the said transverse tilting axis (24). The torsion bar (32) has at least a first portion (32a) rotatably connected to the seat support structure (14) and at least a second portion (32b) connected to the base structure (16) through the aforesaid adjustment means.