Improvements in the means for the structure of armchairs. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the means for tilting armchairs, which are characterized by comprising a base for adaptation to the lower face of the seat, in which the means of tilting is established consisting of a support piece of triangular structure in which its upper vertex receives the articulation, by means of bearings with respect to the seat of the chair, while in an angle of its base the central column is inserted, being in the previous angle of said base the transverse axis of support in which a stem is supported with freedom of rotation which moves at an angle in the vertical plane of the unit, forcing the spring coil spring that surrounds it to contract and expand. (Machine-translation by Google Translate, not legally binding)