Patent ID: 7870618

Claim:
A helmet comprising: a helmet shell including cooperating first and second sections in slidable engagement with one another, the first section including at least one engagement region on an inner surface thereof having a profile complementary to an engagement region on an outer surface of the second section and in slidable engagement therewith; at least one locking assembly interconnecting the first and second sections, the locking assembly including a pivoting member pivotable between a locked position and an unlocked position, the pivoting member in the locked position reducing a distance between the engagement regions by pressing the engagement regions against one another such as to prevent a relative sliding motion therebetween, the pivoting member in the unlocked position allowing an increase in the distance between the engagement regions to allow the relative sliding motion; and at least one engagement member connected to the first shell section and removably engaging the pivoting member in the locked position to prevent accidental movement of the pivoting member toward the unlocked position.