Chair with synchronized rocking seat and backrest

Chair with synchronized tilting seat and back

Chair with synchronously moving seat and seat back

Chair with tilt lock mechanism

Chair with variable inclination of the seat and backrest

Chair with variable pitch

Chair with zero front rise control

Chair, especially office chair

Chair, in particular office chair

Chair, in particular office chair

Chair, in particular office chair

Chair, in particular office chair

Chair, particularly a data display chair

Chair, particularly an office chair

Chair, particularly office chair

Chair, specially an office chair

Combined tension and back stop function for seating unit

Control device for an adjustable seating structure

Control for seating unit with back stop

Control mechanism for an adjustable chair or the like