A device for dissipating forces on a helmet is described. The device includes first and second dissipation layers, each having a leaf spring. A helmet including such device is further described. A leaf spring for dissipating forces on a curved object is also described.

The present invention provides an apparatus to dissipate and attenuate mechanical waves which travel through a human brain upon blunt trauma. The apparatus comprises a pressurizable and ventable outer balloon shell encasing an inner hard shell. The pressurizable and ventable outer balloon shell is configured to release a pressurized gas to the atmosphere upon an impact to said pressurizable and ventable outer balloon shell. The apparatus is configured to enhance efficiency in reduction of an amplitude of the mechanical waves of the blunt trauma delivered to the human brain and to disrupt doubling-up of mechanical waves in a pressure zone inside the pressurizable and ventable outer balloon shell. The apparatus is configured to ventilate the pressurizable and ventable outer balloon shell and the inner hard shell.

A lightweight protective headgear for non-contact sports comprising a soft foam helmet comprising a skeletal support structure designed to prevent head and facial injuries to the user.

A device for fixing to a helmet is described. The helmet includes a shell portion configured to receive a user's head, and the device includes a leaf spring for coupling to the shell portion and configured to dissipate impact forces. A helmet including such device is further described.

The present invention provides an apparatus to disperse and attenuate mechanical waves which travel through a human brain upon direct and indirect blunt head trauma. The apparatus comprises a pressurizable and ventable outer balloon shell encasing an inner hard shell. The pressurizable and ventable outer balloon shell releases a pressurized gas to atmosphere upon an impact to said pressurizable and ventable outer balloon shell. The pressurizable and ventable outer balloon shell is configured to compartmentalize an impact region, to reduce amplitudes of incident, reflected and transmitted mechanical waves and to dampen resonance of the mechanical waves delivered to both the apparatus and a human head.

The present disclosure provides an apparatus for use in reducing the impact to the head during sporting activities. The present disclosure provides a helmet cap that covers an underlying hard shell helmet. The helmet cap has a durable, energy absorbing outer shell, which lessens the initial impact to the helmet. The outer shell is formed into segments of padded material that may deform on impact. The outer shell has an inner surface that allows the outer shell to slide over the surface of a helmet thereby reducing forces applied to a wearer. The helmet cap may be securely attached to helmets without modification of the helmets. The helmet cap may include an adjustable fastener that allows the helmet cap to be securely attached to helmets of varying dimensions.

Protective headgear in one case comprises a main body having a pair of side head parts connected by a forehead part and a crown part extending from the forehead part. The body is shaped to encompass the head of a wearer. The main body comprises an inner sheet of an open cell polyurethane foam material, an outer barrier layer, and an intermediate section comprising portions of an open cell polyurethane foam material between the inner and the outer layers. The open cell polyurethane foam has a density of from 100 to 300 kg/m.sup.3 which significantly reduces the G-force energy transferred to a players head during impact.

The disclosure relates to a protective sports headgear device and method for manufacturing a protective sports headgear device. The device may include various padding materials that can reduce the risk of head injury for the wearer. One or more external covering layers can be connected to the padding or can surround and retain the padding. The protective sports headgear device may provide protection for the ears of the wearer as well. Additionally, the protective sports headgear device can be suitable for use in the sports of water polo, wrestling, or other sports.

A protective headgear can include a core and two or more impact absorbing layers coupled to the core. At least one impact absorbing layer can include a number of impact absorbing components that are configured to absorb and reduce the force of impact incident on the protective headgear. The impact absorbing materials can employ cylindrical segments of viscoelastic foam with a sealed central void to absorb high energy impacts. The protective helmet can reduce the occurrence of concussions and subconcussive impacts to the brain.

A protective device for use with a helmet, for example a sporting helmet, has a plurality of removable and replaceable resilient deformable sacrificial bubble structures adapted to be installed on a helmet to absorb an impact force when the impact force impacts the bubble structures. The bubble structures can also provide an indication of location and severity of the impact force on the helmet. In one embodiment, a helmet cover for wearing over an outer surface of a helmet has a base layer capable of being fitted over the outer surface of the helmet and a plurality of removeable and replaceable bubble structures contained in the base layer.