Folding chair

1. A folding chair configurable between a position of use and a folded position, with armrests and four cantilever legs articulated by transversal axes to said armrests, comprising:

a seat;

a back;

a horizontal support base that is set to the ground; and

a releasable mechanism to lock the chair in the position of use;

the four cantilever legs comprising:

two front legs, each being positioned on respective sides of the chair, and directly engaged with a front end portion of the seat and a front portion of the horizontal support base by way of pivotable engagement; and

two rear legs, each being positioned on respective sides of the chair, and directly engaged with the armrests, the middle part of the seat and the horizontal support base by way of pivotable engagement;

wherein the releasable mechanism to lock the chair in the position of use comprises two rods positioned in each side of the chair joining the axes, perpendicular to the armrests, placed in the middle of the front legs to the middle part of the seat;

the four cantilever legs are parallel with one another in the position of use, the folded position and during a transition therebetween; and

the armrests and the horizontal support base are parallel with one another in the position of use, in the folded position and during the transition therebetween.

2. The folding chair of claim 1 wherein the two front legs are vertical in the position of use.

3. The folding chair of claim 1 wherein the two back legs are vertical in the position of use.

4. The folding chair of claim 1 wherein the seat is comb shaped and is joined to the back at the end of the teeth of the comb by axes in both sides, perpendicular to the armrests.

5. The folding chair of claim 1 wherein the armrests, back, seat, front legs and horizontal support base are connected such that they collectively form an ‘S’ shape.