A helmet can include a helmet body and a shield. The helmet body can include a front portion and a tail portion, and the shield can include two ear portions connected by a brow portion. The shield can be releasably coupled to the helmet body. The ears of a helmet user can be exposed with respect to the helmet body and covered with respect to the shield. The brow portion of the shield can extend across the front portion of the helmet. The tail portion of the helmet can be tapered and the front portion of the helmet can have a rounded leading edge, such that the helmet body has a tear drop form factor.

A shock reducing helmet includes a helmet body made of an outer and inner shell, ear openings, and face shield or visor that connects flush to the helmet body.

The outer shell is formed from the strongest and lightest weight materials, such as polycarbonate, or other plastics, Kevlar, carbon fiber, or metal, to provide a high strength to weight ratio and minimize fracture.

The inner chamber includes shock absorbing structures made from materials such as a nickel-titanium shape-memory alloy, polycarbonate, other plastics, Kevlar, carbon fiber, or metal. Some variants have a viscous or gaseous layer around the springs to increase stability upon linear and rotational impact.

The face shield or visor is made of a clear polycarbonate that connects flush with the outer shell to eliminate visibility interference and rotational injuries caused by competitors pulling the metal bars commonly present in football helmets.

A shield for a helmet includes a shield having a sun visor rotatably and axially supported at a position different from a rotation center of the shield. The sun visor rotates within a range from a first position where the sun visor, like a bill of a hat, lies above a front opening part and projects forward to a second position where the sun visor lies outside facing the shield in an overlapping manner, and the sun visor is retained in the first position. The sun visor is operated and moved forward and away from the shield to rotate from the first position to the second position.

A protective helmet, including an outer shell including at least one aperture, an inner shell slidingly connected to the outer shell, and at least one expandable bladder positioned between the outer shell and the inner shell, wherein, when a force strikes the helmet, the at least one expandable bladder is operatively arranged to displace radially outward in the at least one aperture and protrude beyond an outer surface of the outer shell.

A visor removably attached to a helmet includes a brim, a first wing extending from the brim, a first prong from the first wing engaging with the first side vent. A second wing opposite the first wing extends from the brim, a second prong from the second wing engaging with the second side vent. A distance between the first prong and the second prong is smaller than a distance between the first front wall of the first side vent and the second front wall of the second side vent, the first prong and the second prong respectively engaged with the first side vent and the second side vent through tension in the visor resulting from expansion of a wingspan between the first wing and the second wing.

A chin guard support mechanism includes first and second fixed-side members, and a moving-side member fixed to the chin guard. When the chin guard pivots forward from a down position in a rising direction, an annular following surface provided on the moving-side member pivots forward while following an annular followed surface provided on the second fixed-side member to make the chin guard rise while moving forward. It is possible to provide a helmet that allows the chin guard support mechanism capable of relatively excellently raising/lowering the chin guard to have a simple structure, allows to operate the chin guard support mechanism smoothly, obviates the necessity of making the structure in a region including an end of the chin guard including the chin guard support mechanism and a vicinity thereof bulky, and obviates the necessity of making the widthwise size of the helmet large.

An augmented-reality helmet which in one embodiment is a full-face motorcycle helmet with a look-down micro-display that projects a virtual image in-line with the helmet's chin bar. In order to accommodate the power requirements, the helmet includes a battery pack mounted at the base of the motorcyclist's skull. A wind turbine charges the batteries. Exhaust from the turbine is then deducted through the helmet to cool the battery pack and/or the motorcyclist's head. The turbine is controllable so that it can operate as a circulating fan to provide ventilation. A digital gyroscope provides a control input to a controller for operating a steerable headlight of the motorcycle to track the rider's head movements; and provides acceleration output to an algorithm that will contact emergency responders if the rider is non-responsive after a collision. A 170 degree rear-view camera is mounted within an aerodynamic fairing on the back of the helmet.

A helmet can include a helmet body and a shield. The helmet body can include a front portion and a tail portion, and the shield can include two ear portions connected by a brow portion. The shield can be releasably coupled to the helmet body. The ears of a helmet user can be exposed with respect to the helmet body and covered with respect to the shield. The brow portion of the shield can extend across the front portion of the helmet. The tail portion of the helmet can be tapered and the front portion of the helmet can have a rounded leading edge, such that the helmet body has a tear drop form factor.

A type variable helmet includes a half face unit formed to cover an upper part of a user's head, and an under face unit detachably attached to a lower part of the half face unit and configured to cover a lower part of the head of the user.

A protective helmet using sectional parts connected by series of planar springs to disperse applied force and reduce localized impact from contact events. The planar compression springs contract and release when the helmet is struck by an external object. The helmet may improve safety and reduce injury for sporting, industrial, or military wearers.