Patent ID: 6863346

Claim:
A chair, in particular an office chair, comprising a pedestal ( 2 ), a seat support ( 5 ) supported thereon, a seat plate ( 6 ) supported on said seat support ( 5 ), a backrest ( 9 ) secured on said seat support ( 5 ), and comprising a horizontal front direction ( 18 ) extending horizontally from the backrest ( 9 ) towards the seat plate ( 6 ), the horizontal front direction ( 18 ) extending parallel to a horizontal plane (B), wherein said seat support ( 5 ) comprises a rear supporting and guiding unit ( 45 ) facing said backrest ( 9 ), the rear supporting and guiding unit ( 45 ) comprising at least one sliding surface ( 27 ) being inclined against the horizontal plane (B) at an inclination angle a, said seat plate ( 6 ) being supported on said sliding surface ( 27 ), and said seat plate ( 6 ) being guided on said sliding surface ( 27 ) against at least one spring element, and wherein said seat support ( 5 ) comprises a front supporting and guiding unit ( 32 ), on which said seat plate ( 6 ) is supported, and on which said seat plate ( 6 ) is displaceably guided along the horizontal front direction ( 18 ), and wherein said rear supporting and guiding unit ( 45 ) comprises at least one guiding pin ( 51 ) being surrounded by at least one spiral spring ( 57 ).