Chair, in particular office chair

Abstract

A chair has a frame, a seat plate which is mountable on a frame and is inclinable by a weight displacement, the seat plate has a front half which is turnably connected with the frame, and a location which is arranged further to the back and is connectable in articulated manner with the frame, a lever articulately connecting the location of the seat plate with the frame, at least one leg spring mounted under the seat plate on the frame and applying a return force to the seat plate, and an abutment on which the seat plate, depending on a body weight of a stool user, is adjustable.

What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims:  
     
         1 . A chair, comprising a frame; a seat plate which is mountable on a frame and is inclinable by a weight displacement, said seat plate having a front half which is turnably connected with said frame, and a location which is arranged further to the back and is connectable in articulated manner with said frame; a lever articulately connecting said location of said seat plate with said frame; at least one leg spring mounted under said seat plate on said frame and applying a return force to said seat plate; and an abutment on which said seat plate, depending on a body weight of a stool user, is adjustable.  
     
     
         2 . A chair as defined in    claim 1   , wherein said abutment is displaceable and formed as a displaceable rod located between said seat plate and a front leg of said helical spring.  
     
     
         3 . A chair as defined in    claim 2   , wherein said displaceable rod extends outwardly beyond said seat plate at least at one side.  
     
     
         4 . A chair as defined in    claim 1   ; and further comprising a back which is inclinable simultaneously with inclining of said seat plate so that an inclination of said back is greater than an inclination of said seat plate.  
     
     
         5 . A chair as defined in    claim 1   ; and further comprising a shackle which is turnably arranged on seat plate and connects said front half of said seat plate with said frame.  
     
     
         6 . A chair as defined in    claim 1   ; and further comprising a turning axle which is fixed on said frame, said seat plate being turnable in a front region on said turning axle; and a connection provided between said seat plate and said frame further behind and displaceable in a longitudinal direction of the chair.