Head-protecting shells and the like articles obtained through deformation of sheets of synthetic material

Claim 1

A HEAD-PROTECTING HELMET TO ENCOMPASS THE HEAD COMPRISING AN ELONGATED SHEET OF SEMI-RIGID SYNTHETIC MATERIAL INCLUDING A FIRST SECTION DEFINING A SUBSTANTIALLY RECTANGULAR CONFIGURATION, A SECOND SECTION DEFINING A SUBSTANTIALLY HEXAGONAL CONFIGURATION, A THIRD SECTION DEFINING A SUBSTANTIALLY RECTANGULAR CONFIGURATION, SAID SECOND SECTION BEING INTERPOSED BETWEEN SAID FIRST AND THIRD SECTIONS ALONG COMMON SIDES THEREBETWEEN AND HAVING REENTERING ANGLES BETWEEN THE FREE SIDES OF SAID SECOND SECTION AND OUTWARD EXTENSIONS OF THE COMMON SIDES OF THE FIRST AND THIRD SECTIONS, A FOURTH SECTION DEFINING A SUBSTANTIALLY HEXAGONAL CONFIGURATION, A FIFTH SECTION DEFINING A SUBSTANTIALLY RECTANGULAR CONFIGURATION, SAID FOURTH SECTION BEING INTERPOSED BETWEEN SAID THIRD AND FIFTH SECTIONS ALONG COMMON SIDES THEREBETWEEN AND HAVING REENTERING ANGLES BETWEEN THE FREE SIDES OF SAID FOURTH SECTION AND OUTWARD EXTENSIONS OF THE COMMON SIDES OF THE THIRD AND FIFTH SECTIONS, REINFORCING STRIPS OF SEMI-RIGID MATERIAL HAVING A THICKNESS SUBSTANTIALLY EQUAL TO THAT OF SAID ELONGATED SHEET DISPOSED ON THE SURFACE THEREOF SURROUNDING THE APEX OF EACH OF SAID RE-ENTERING ANGLES AND ALONG EACH FREE SIDE AND OUTWARD EXTENSION THEREOF TO REINFORCE THESE PORTIONS WHEN AND AFTER THE THUS CONSTI-