Patent ID: 6837389

Claim:
A profile-section support system, comprising: hollow profile-section supports ( 10 , 40 , 41 , 42 , 60 ) of polygonal cross section, having at least one of outer side ( 14 , 15 , 16 , 17 ) with edges provided with ribs ( 18 , 19 , 20 , 21 ) defining grooves ( 22 ) with peripheral undercuts therebetween; additional parts selected from the group consisting of further profile-section supports ( 10 , 40 , 41 , 42 , 60 ) and other parts; connecting elements ( 43 , 44 , 63 ) anchored in said undercuts and connecting said additional parts, said connecting elements having corner regions with inner corner grooves ( 23 ), thereby allowing a spreading apart of the ribs ( 18 , 19 , 20 , 21 ) with deformation of the at least one outer side ( 14 , 15 , 16 , 17 ) wherein ribs are disposed on the at least one outer side ( 14 , 16 , 17 ) adjoining the hollow profile-section supports ( 10 , 40 , 41 , 42 , 60 ), and wherein two ribs ( 18 , 19 , 20 , 21 ) on an edge between adjacent outer sides ( 14 , 16 , 17 ) of the hollow profile-section supports ( 10 , 40 , 41 , 42 , 80 ) define an outer corner groove ( 24 ).