Patent ID: 9554611
Date: 2017-01-31
CPC Classifications: A42B

Claim:
1. A protective helmet comprising a plurality of segments, at least two of said segments being connected to each other by means of a sliding connection, said segments connected by said sliding connection being provided with indentations and approximately parallel complementary rigid protrusions, wherein for each sliding connection, the protrusions from each of the segments are connected to each other by means of a transverse bar located at their ends, said transverse bars being adapted to maintain a connection between the two segments of a sliding connection, the two segments of said sliding connection being movable between a folded position, in which the indentations of the first segment are occupied by the rigid protrusions of the second segment and an extended position in which the transverse bars prevent any disengagement, further comprising two central segments and peripheral segments, the two central segments being connected to each other by a sliding connection, and the peripheral segments being connected in pairs by means of a hinge connection, wherein one of the two central segments is connected to a first peripheral segment by a pivot connection and one of the two central segments is connected to at least one other peripheral segment by a locking device, wherein the helmet is configured such that: when locked, said locking device holds the helmet fixed in an extended position; when unlocked, said locking device enables displacement of said peripheral segments in order to fold them down inside the helmet through hinge connections and enables the pivoting of the first of the two central segments toward the first peripheral segment around the pivot connection, thus bringing the helmet into a folded position.