Method of fixing at various preset levels the extending column for the bases of seats with a housing that is internally toothed and externally conical

摘要

This method of fixing at various preset levels the extending column 5 for seats has the characteristic of using an internally toothed 7, 7A, 15 housing 9 that engages with corresponding conjugate niches 8, 17, 18 on the cylindrical body 22, 5A, 5B of the extending column at various levels and is inserted into a slightly conical hole 12 in the base 1 of the seat designed to hold it and establish its retaining grip on the extending column 5 due to the effect of the weight of the seated person. IMAGE