Metallic frame for chairs with tubular elements

Abstract

A metallic frame for chairs with tubular elements, comprising two inverted V-shaped elements that form the legs of a chair, which are parallel and joined substantially at their inside curvature to a rod-like crossmember, two L-shaped elements connected by the crossmember on which they are arranged in a parallel configuration so as to form a support for the back and for the seat, respectively with their first portions, which are substantially vertical, and second portions, which are substantially horizontal.

1 - 10 . (canceled) 
     
     
         11 . A metallic frame for chairs with tubular elements, comprising two inverted V-shaped elements that form the legs of a chair, which are parallel and joined substantially at their inside curvature to a rod-like crossmember, two L-shaped elements connected by said crossmember on which they are arranged in a parallel configuration so as to form a support for the back and for the seat, respectively with their first portions, which are substantially vertical, and second portions, which are substantially horizontal. 
     
     
         12 . The frame according to  claim 11 , wherein each one of said inverted V-shaped elements has a first pair of raised portions formed by a corresponding first recess of the cross-section obtained from a plastic compression deformation at said inside curvature. 
     
     
         13 . The frame according to  claim 11 , wherein each one of said L-shaped elements has a second pair of raised portions, formed by a corresponding second recess of the cross-section obtained in a downward region on said second portion and so as to correspond to the region for joining to said crossmember by plastic compression deformation. 
     
     
         14 . The frame according to  claim 11 , wherein each one of said L-shaped elements has an additional pair of raised portions formed by a corresponding additional recess of the cross-section obtained by plastic compression deformation at its curvature region. 
     
     
         15 . The frame according to  claim 11 , wherein said crossmember is rectilinear with an oval cross-section with parallel sides, joined by semicircular elements, that form two parallel faces for said crossmember. 
     
     
         16 . The frame according to  claim 12 , wherein each one of said inverted V-shaped elements is joined to said crossmember by welding at regions of contact of said first pair of raised portions with said crossmember. 
     
     
         17 . The frame according to  claim 13 , wherein each one of said L-shaped elements is joined to said crossmember by welding at at least one raised portion of said second pair of raised portions. 
     
     
         18 . The frame according to  claim 11 , wherein each one of said inverted V-shaped elements has a reinforcement recess on the inner side of each one of two straight portions that form a front leg and a rear leg of said frame. 
     
     
         19 . The frame according to  claim 18 , wherein it can be stacked with other similar frames, the possibility of stacking being determined by the coupling of an internal surface of said rectilinear portion of each front leg or rear leg of one frame with the outer surface of a rectilinear portion of each front leg or rear leg of an underlying frame. 
     
     
         20 . The frame according to  claim 11 , wherein said front legs and said rear legs form, with their four resting points at the base, a resting area within which every point of the L-shaped elements lies.