Patent ID: 9119473
Filing Date: 2015-09-01
Classification: A47C,A61G

Abstract:
1. A seat comprising: a back support portion with adjustable surface profile; an adjustable core column arranged along the height direction of the back support portion, the adjustable core column comprising a plurality of holders and a plurality of side members fixed to the holders and extending substantially in the width direction of the back support portion such as to profile the surface of the back support portion; and profile locking means coupled with a plurality of holders and adjustable to an unlocked configuration, in which the profile of the surface of the back support portion is adjustable, and to a locked configuration, in which the holders are fixed still with respect to each other and the profile of the surface of the back support portion is locked, wherein the holders are coupled with neighbouring holders via spacers through a spherical joint configured such that in the unlocked configuration of the profile locking means the holders are individually rotatable around a plurality of axes with respect to the neighbouring holders, wherein the holders have a spherical recess configured to receive a spherical portion of the neighbouring holder, the seat further comprising spacers with a coarse surface in a form of a segment of a sphere placed between the neighboring holders, wherein the spacers have a central through-hole of a diameter smaller than a diameter of a central through-hole of the holders.