Helmet and fabrication method

Abstract

A helmet designed for working at heights and for mountaineering comprises a crown and a diverter. The crown is provided with a crown surface delineating several first through holes separated by first studs and defining a first ventilation area. The diverter is attached to the crown and arranged between the crown and the space designed to receive a user's head. The diverter is facing the first ventilation area in a first direction perpendicular to a median sagittal plane of a user of the helmet. The diverter defines a surface extending mainly in a direction that connects the peak of the crown and a bottom end of the crown. The surface of the diverter moves away from the surface of the crown in the first direction directed towards the median sagittal plane.

1 . Helmet designed for working at heights and for mountaineering comprising:
 a crown having a peak and a base provided with a crown wall delineating several first through holes separated by first studs to form a first ventilation area, the crown extending in a heightwise direction between the base and the peak;   a cap delineating a space designed to receive a user's head;   a diverter attached to the crown and arranged between the crown and the cap to divert an object entering via one of the first through holes, the diverter being distinct from the cap;   
       wherein the diverter has a diverting wall facing the first ventilation area in a first direction perpendicular to the heightwise direction, the diverting wall extending in the direction of the peak up to a top end; 
       wherein an inner wall of the crown and the diverter form a duct opening out in the direction of the peak of the crown and flaring out in the direction of the peak of the crown; and 
       wherein the top end is arranged between the cap and the inner wall of the crown so that any imaginary line tangent to the top end and passing through the first through holes passes through the crown without passing through the space designed to receive the user's head delineated by the cap, the diverting wall preventing the object from pressing against the cap or reaching said space. 
     
     
         2 . Helmet according to  claim 1  wherein the diverter delineates several second through holes separated by second studs to define a second ventilation area;
 wherein the second through holes have a smaller area than an area of the facing first through holes in the first direction. 
 
     
     
         3 . Helmet according to  claim 2  wherein each first through hole is facing at least two second through holes in the first direction. 
     
     
         4 . Helmet according to  claim 1  wherein the diverter is installed removable from the crown. 
     
     
         5 . Helmet according to  claim 1  comprising a shutter installed movable with respect to the first ventilation area between a closed position where the first through holes are closed by the shutter and an open position where the shutter is not facing the first through holes in the first direction. 
     
     
         6 . Helmet according to  claim 5  wherein the diverter is installed movable with respect to the crown between a protection position and another position, wherein the shutter is installed fixedly on the diverter, wherein the protection position is a position where the diverting wall is facing the first ventilation area in the first direction and wherein the other position corresponds to the closed position of the shutter. 
     
     
         7 . Method for manufacturing a helmet according to  claim 1  comprising the following steps:
 providing a helmet and a diverter, the helmet comprising a crown and a cap, the crown having a peak and a base defining a supporting plane, the crown being provided with a crown wall delineating several first through holes separated by first studs to form a first ventilation area, the cap delineating a space designed to receive a user's head; 
 attaching the diverter to the crown, the diverter being arranged between the crown and the cap to divert an object entering via one of the first through holes; 
 
       wherein the diverter is facing the first ventilation area in a first direction parallel to the supporting plane; 
       wherein in a cutting plane perpendicular to the supporting plane and in an observation in a heightwise direction perpendicular to the supporting plane and directed from the supporting plane to the peak, the inclined surface of the diverter moves away from the surface of the crown mainly in the direction of the peak of the crown without passing through the space designed to receive the user's head delineated by the cap.