A clamping device has a body, at least one clamping member and an operating cover. The clamping member blocks at least one of the wire elements. The body has a cavity for passage a wire element and to house a clamping member, so that the clamping member is movable in the cavity along a first axis to a blocking position of the wire element. The operating cover is movable along the first axis relative to the body, and allows movement of the clamping member relative to the body along the first axis. The clamping device also has a drive device of the clamping member. The drive device enables free movement of the clamping member along the first axis with respect to the operating cover and with respect to the body, and enables movement of the clamping member away from the blocking position by actuation of the operating cover.

An impact-attenuating liner for a helmet includes a liner body made from an impact-absorbing material and a plurality of pads removably attached to an interior surface of the liner body, each of the pads being repositionable at different locations on the interior surface of the liner body. A retention system may be attached to the liner body and configured to secure the liner to the wearer's head during use. The liner may be configured to provide substantially uniform impact protection throughout the interior region of the helmet.

An impact-attenuating liner for a helmet includes a liner body made from an impact-absorbing material and a plurality of pads removably attached to an interior surface of the liner body, each of the pads being repositionable at different locations on the interior surface of the liner body. A retention system may be attached to the liner body and configured to secure the liner to the wearer's head during use. The liner may be configured to provide substantially uniform impact protection throughout the interior region of the helmet.

Methods and devices for adjusting the position of a mandible guard relative to a helmet are disclosed. Adjustment of the mandible guard may be performed by a user while the user is wearing the helmet and/or without the use of tools. A mandible guard adjustment system may be combined with an attachment system for attaching and removing the mandible guard to a helmet.

A helmet having non-bursting air cells preferably includes a hard helmet shell, an outside air cell impact layer and an inside air cell impact layer. The outside air cell impact layer preferably includes at least one air cell layer and an outside layer of sheet material. Each air cell layer includes a plurality of air cells created between two plastic sheets. The inside air cell impact layer includes the at least one air cell layer. The inside and outside air cell impact layers may be permanently or removably attached to hard helmet shell. A second embodiment of the helmet having non-bursting air cells preferably includes the hard helmet shell, the outside air cell impact layer and an inside air cell inflatable impact layer. The inside air cell inflatable impact layer preferably includes at least one inflatable air cell layer and a check valve.

A headborne attachment platform includes multiple rigid plates and straps of connecting material connecting the rigid plates in an assembly at independently selectable and pre-set distances apart from each other. The assembly of rigid plates is shaped and connected to sit adjacent to, and surround, the bone regions of a wearer's skull, and define an overall headgear shape and contour. The straps are more flexible than the rigid plates in directions perpendicular to the thickness of the straps, and the straps are inelastic in a direction of a length thereof. A tightening mechanism is configured to adjust a circumference of a headband region, and the rigid plates have mounting features configured to mount an outer helmet shell and/or a headborne device. The rigid plates are sufficiently rigid to support and maintain their three-dimensional shape when subjected to forces exerted upon them by the outer helmet shell or headborne device.

A system is provided for use by athletes and their coaches during practice. The system includes an electronic system configured for inclusion in a helmet. The electronic system includes a transparent display screen coupled to the helmet, a processor coupled to the transparent display screen, a camera coupled to the processor and a first wireless transceiver coupled to the processor. The system also includes a handheld processing device. The handheld processing device includes a second wireless transceiver configured to communicate video content with the first wireless transceiver, an interactive display screen configured to display the first video and a video editing application configured to edit the first video to generate a second video including a simulated player technique superimposed in the first video. The second video is communicated from the handheld processing device to the electronic system for display to the athlete via the transparent display screen.

A helmet configured to protect a human head against mild traumatic brain injury upon impact includes an outer shell and a liner consisting of fluid fillable flexible fluid chambers fluidly connected to each other by fluid connections. The fluid chambers being spaced around the circumference of the helmet and configured to fill a space between the head and the outer shell when the helmet is positioned on the head. Impact resistant flexible pads are also in the liner and are spaced around an inner circumference of the outer shell adjacent to each of the fluid fillable flexible fluid chambers. A flexible inner shell inside the liner is configured to fit closely on the head. The flexible fluid chambers are configured to compress in response to impacting of the helmet on an impact side and to force liquids through the fluid connections to inflate other fluid chambers inside the helmet thereby cushioning the head against a rebound impact on the inside of the helmet.

A helmet configured to protect a human head against mild traumatic brain injury upon impact includes an outer shell and a liner consisting of fluid fillable flexible fluid chambers fluidly connected to each other by fluid connections. The fluid chambers being spaced around the circumference of the helmet and configured to fill a space between the head and the outer shell when the helmet is positioned on the head. Impact resistant flexible pads are also in the liner and are spaced around an inner circumference of the outer shell adjacent to each of the fluid fillable flexible fluid chambers. A flexible inner shell inside the liner is configured to fit closely on the head. The flexible fluid chambers are configured to compress in response to impacting of the helmet on an impact side and to force liquids through the fluid connections to inflate other fluid chambers inside the helmet thereby cushioning the head against a rebound impact on the inside of the helmet.

A protective helmet may include an energy management material inside an outer surface, a rim positioned on an outwardly facing surface between an inner surface and the outer surface, a sweat management pad assembly with an absorbent forehead pad positioned in a front portion of the helmet proximate the rim, the assembly including at least one absorbent extension tab extending from the absorbent forehead pad and across a portion of a surface of the rim outward of the inner surface of the energy management material, wherein the absorbent extension tab extends at least half a distance across the rim between the inner surface and the outer surface, and a fastener positioned between the absorbent extension tab and the rim and coupling the absorbent extension tab to the rim.