A head-mounted display system includes a head-mounted display unit and a positioning and stabilising structure structured and arranged to hold the head-mounted display unit in an operational position over a user's face in use. The positioning and stabilising structure includes a rear support structure adapted to contact posterior regions of a user's head and at least one connector structured and arranged to interconnect the rear support structure to the head-mounted display unit. The rear support structure is in the form of a hoop comprising an occipital portion configured and arranged engage the user's head along a portion of the occipital bone adjacent a junction where the neck muscles attach to the occipital bone in use.

A headband for a protection helmet comprises a strip forming at least a part of a ring around a user's head. An adjustment device adjusts a circumference of the ring. The end of the strip is fixed to an attachment point that is movable with respect to the body of the adjustment device. A rotary actuator is connected to the adjustment device by means of a transmission so that rotation of the rotary actuator results in the attachment point being moved with respect to the body. The transmission comprises a flexible transmission shaft configured to transfer a rotary torque applied on the rotary actuator into a rotary torque applied on the adjustment device to move the attachment point and modify the circumference of the ring. A protection helmet comprises such headband.

A ballistic armored component attaches to the existing retention straps of common combat helmets and provides protection to the otherwise exposed lower skull and upper neck region. A fabric covering contains a soft armor or hard armor insert, and is mounted by straps or other fasteners to existing straps found in conventional helmets. The armor component may be fabric of aramid fibers, or fabric of ultra high molecular weight polyethylene fibers, or may be fabricated of a rigid plate of ceramic, polymer, or metal. The armored component adds additional protection from ground-level or subterranean munitions, by placing a ballistic shape on the lower skull region (occipital region), providing significant additional ballistic coverage with minimal weight and bulk. The fabric shell may also be connected directly to the helmet shell, to allow the component to withdraw within the helmet when the wearer's neck is flexed rearwardly.

A helmet can include an energy absorbing shell including an outer surface and an inner surface opposite the outer surface. A fit system member can be coupled to a rear of the energy absorbing shell to adjust a fit of the helmet for a user. A sliding layer can include an outer sliding layer surface oriented towards the inner surface of the energy absorbing shell and an inner sliding layer surface opposite the outer surface. The sliding layer can include at least one attachment member and at least one integrated fit system arm. The at least one integrated fit system arm can be coupled to the fit system member. An elastomeric member can include a first end coupled to the energy absorbing shell and a second end coupled to the attachment member of the sliding layer. Comfort padding can be coupled to the inner surface of the Sliding layer.

An adjustment device of the position of a first part with respect to a second part, comprising an adjustment button mounted movable in translation inside a groove provided in the second part, and a blocking part having a locked position in which the blocking part prevents the first part from translating along the groove, and a locked position in which the blocking part enables the first part to translate along the groove, the adjustment button translating along the groove to move the blocking part to the unlocked position and to translate the first part along the groove.

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.

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.

An improved headband (12) for a head safety product such as a face shield, hardhat (10) or welding helmet includes a horizontal section (14) configured to encircle the head and an adjustment mechanism (14a) configured to adjust a circumference of the horizontal section. A nape-belt section (16) depends from the horizontal section (14) and is configured to cup the occipital area of the head and has a pivotal movement relative to the horizontal section (14). A flexible section (20) is connected between the horizontal section (14) and the nape-belt section (16). The flexible section (20) spring-biasing the pivotal movement of the nape-belt section (16) relative to the horizontal section (14).

A hardhat shell has a suspension that is secured to the shell by a hanger. The suspension has a horizontal band portion for extending around a user's head, and the suspension is positioned within a hardhat shell. At least one hanger is connected to the suspension for securing the suspension to the shell. Each hanger has a hook at a first end of the hanger, a latching surface located towards the middle of the hanger, and a lever arm at a second end of the hanger. At least one mount is formed on the inner surface of the shell. Each hanger is configured to securely engage a respective one of the mounts, with the latching surface of the respective hanger being in frictional engagement with the respective ledge surface of the mount. By manually pivoting the hanger, a user can cause the latching surface to disengage from the ledge surface.

The present application discloses a helmet, a helmet retention system, and a method of adjusting a helmet. In certain embodiments, the helmet comprises a helmet shell and a helmet retention system. The retention system comprises a rear portion connected to the rear of the helmet shell, first and second straps extending from the rear portion to a front portion of the helmet shell, and an adjustment device attached to the rear portion for adjusting the length of the first and second straps between the rear portion and the front portion of the helmet shell to tighten and loosen the straps about the head of the user. Each strap comprises a strap segment and an elongated member attached to the strap segment. The adjustment device is configured to selectively adjust the elongated member to move the first and second strap segments relative to the helmet shell.