Patent ID: 7775792

Claim:
A combustion head for a gas burner comprising: a pipe, having a central axis of symmetry (X), able to transfer a flow of comburent fluid into a combustion chamber, and a plurality of gas tubes able to carry combustible gas into said combustion chamber (CC), said gas tubes being arranged along a circumference (CIR); wherein each gas tube has a first portion having an axis (K) of substantial symmetry, said axis (K) being substantially parallel to said axis (X), said gas tubes being rotatable about their respective axes (K), and each gas tube has a second portion in series with respect to said first portion, said second portion being inclined at an angle (α) in the range of from 0° to +90° with respect to said axis (K); wherein a first end of a respective control rod is fixed to each said gas tube and adapted to make said gas tube turn about its axis (K); wherein a second end of said control rod rests on a support structure and said second end of each rod is provided with a respective rotational and locking device; and wherein said rotational locking device includes a plate welded to said rod, a groove that is part of the plate, an indicator element cooperating with said rod engaged in said groove and a clamping element.