Patent ID: 7555788

Claim:
An integral helmet, comprising: an impact-resistant helmet shell which covers the upper part of the head down to the back of the neck and the ear region of a helmet wearer; a visor opening defined at an upper edge and at lateral edges by the helmet shell; a chin portion defining a lower side of the visor opening over a width of said visor opening and supplementing the helmet shell so as to form the integral helmet and to form an access opening which completely surrounds the neck of the helmet wearer, said chin portion having a pivot end and a locking end; a single chin portion pivot joint positioned on a first side of said helmet having a substantially horizontal pivot axis, said pivot end of said chin portion being connected to said helmet at said single chin portion pivot joint with said chin portion being pivotable about said pivot axis so as to enlarge the access opening; and a locking mechanism for connecting said locking end of said chin portion to a part on a second side of said helmet, wherein when said chin portion is in a closed state, the chin portion extends from a lateral region on said first side of the helmet shell over more than half the width of the visor opening to said part on said second side of said helmet.