An adjustable helmet includes a main shell having a first side portion, and a second side portion. The first side portion and the second side portion are laterally flexible with respect to one another. The adjustable helmet includes a secondary shell coupled to the main shell at a location between the first side portion and the second side portion. At least a portion of the first side portion and at least a portion of the second side portion each extends over at least a portion of a top surface of the secondary shell. The adjustable helmet includes a tensioning device. A first end of the tensioning device is coupled to the first side portion and a second end of the tensioning device is coupled to the second side portion so as to provide a tension force between the first side portion and the second side portion.

A helmet for protecting a wearer's head. The helmet comprises an outer shell comprising a first shell member and a second shell member movable relative to one another in a longitudinal direction of the helmet to adjust a fit of the helmet on the wearer's head. The helmet comprises an adjustment mechanism configured to control movement of the first shell member and the second shell member relative to one another. The adjustment mechanism comprises an actuator movable between a first position in which the first shell member and the second shell member are allowed to move relative to one another and a second position in which the first shell member and the second shell member are precluded from moving relative to one another. The actuator is configured to lock the first shell member and the second shell member relative to one another without extending through a given one of the first shell member and the second shell member.

The adjustable helmet assembly disclosed within in comprises a front shell, a back shell and a locking mechanism. The locking mechanism allows sliding movement of the front shell relative to the back shell for adjustment to a desired length for a specific wearer. The locking mechanism is movable from an unlocked position allowing the front shell to move relative to the back shell, and a locked position prohibiting the front shell to move relative to the back shell. The locking mechanism may be a clamp or lever function, and/or a cam function. Accordingly, the adjustable helmet may further comprise crumple zones to further reduce and/or dissipate impact forces.

Helmet retention systems including a dial adjustment mechanism for adjusting the effective length of a head band are described. The dial adjustment mechanisms include a separator to separate portions of the head band during adjustment.

Embodiments of the present disclosure relate to helmet safety compliance systems for use in personal transportation ride-share systems. A rider safety compliance system, may include a personal transport upon which a user can be transported, a physical lock mechanism securely mounted on the personal transport and mechanically adapted to lock and secure a helmet, and a processor adapted to release the helmet from the physical lock mechanism as a pre-determined action for allowing the user to activate the personal transport.

The present disclosure relates to a variable helmet that can be unfolded flat and carried or kept when not in use. A configuration of the variable helmet is characterized by including a protective pad in which a plurality of unit pads are planarly coupled like a mosaic so that the protective pad is in a hemispherical shape to cover and protect a head of a wearer and is able to be unfolded flat like a plate, the protective pad having unevenness portions provided in a sawtooth shape at both ends thereof; both-end fixing means allowing the unit pads to have a hemispherical shape by tightening the both ends of the protective pad; and a chin strap allowing the protective pad to be fixed in a state in which the protective pad is covered on the head.

A forehead support band for work or sports protective helmets, having an elongated structure, and able to assume an arched configuration in the mounted condition on a respective helmet is provided. The structure has at least one fixing appendage, for its fixing to the helmet, interposed between two opposite ends of the structure. The band has two movable connection brackets for the engagement of the structure to the helmet and to a size-adjustment device arranged to engage a user's nape.

A folding hat can include an integrated display system. Methods for folding and manufacturing the hat with integrated displays are also disclosed. The hat can include a visor and cap of various materials integrated with displays. The hat can have hinges that fold the assembly into a small volume for stowing. The hinges are configurable in a multitude of positions and geometries to provide different folding techniques and folded geometries. Such configurations allow for a range of options for carrying and storing the folding hat with integrated display system.

An adjustment mechanism and headband arrangement are disclosed herein, the adjustment mechanism including an elongated cord configured for extending around a perimeter of the headband arrangement; and a locking member receiving a portion of the elongated cord and configured to interact with the elongated cord between a locked state, preventing movement of the elongated cord relative to the locking member, and an unlocked state, permitting movement of the elongated cord relative to the locking member, wherein the locking member comprises at least one tooth configured to engage the portion of the elongated cord received in the locking member in the locked state, and wherein the portion of the elongated cord is configured to disengage from the at least one tooth in the unlocked state in response to at least one of the first end and the second end being pulled in the direction of the major longitudinal axis.

The hard hat with integrated electronic systems is a hard hat comprising a shell, headband, sweatband, suspension harness, and size adjustment ratchet and knob. The hard hat also comprises electronics, which allow the user to listen to radio broadcasts, determine the time, receive and initiate mobile phone calls, issues voice commands to a paired device, or combinations thereof. A pair of audio transducers mounted adjacent to the ears allows the user to hear radio broadcasts and mobile phone audio. A microphone mounted on the control panel allows the user to talk during a mobile phone call or speak voice commands. A microprocessor within the hard hat controller manages devices and routes signals. A control display and operator controls accessible on the exterior side of the hard hat allows the user to change settings and pair the hard hat with a smart phone.