Apparatus for adjusting the inclination of seat upholstery in a driver{3 s seat, office chair, revolving armchair or the like

摘要

A seat comprising upholstery on a base plate is provided with means for adjusting the height of the upholstery surface at least at the front of the seat, said adjusting means comprising an intermediate plate interposed between the upholstery and the base plate to define with the base plate a tapered gap. The intermediate plate is pivoted to the base plate about a transverse axis and rests on a displaceable supporting member disposed in the gap at a selected spacing from the transverse axis. To adjust the height of the upholstery, the supporting member is moved further towards or away from the transverse axis.