Blowing element

Claim 1

In a blowing element for use with an arc contact assembly having a movable contact, a support in the shape of a `U` with two parallel arms and a common stem, a fixed contact button disposed on an external free arm thereof in the neighbourhood of said stem, said blowing element having the shape of a `U` analogous to that of the support to which it is connected electrically and mechanically, said blowing element including two lateral portions surrounding the fixed contact button, these members being disposed in an arc extinction chamber provided with wings, the improvement that a first arm of the blowing element of which a surface is disposed substantially at the level of the plane of the fixed contact without touching the neighbouring arm of the support, has a tongue at its free extremity and a recess surrounding said fixed contact and narrowing up to the region of the tongue, a second arm of the blowing element being coupled electrically and mechanically to that arm of the support not carrying said fixed contact, the blowing element having a third arm, fast to the extremity of the second arm, including an opening and rising perpendicularly to the first and second arms such that its extremity is substantially above the plane of the first arm in order to enter into the arc extinction chamber, of which it constitutes a first wing, and such that said tongue enters into said opening.