Abstract: Helmet-mounted display unit arrangements provide improved adjustability, including pitch, yaw, and/or vertical translation adjustment. In some embodiments, adjustments to one parameter do not affect the adjustability of other parameters. The helmet-mounted display and associated mount may be arranged such that the helmet-mounted display fits behind a helmet-mounted visor and/or in front of glasses being worn by the user.

Abstract: An accessory attachment system for a helmet and its method of use are disclosed. The accessory attachment system for the helmet may include a base configured for attachment to a helmet and an accessory attachment portion associated with the base. The accessory attachment portion may be configured to selectively attach at least one accessory. The accessory attachment portion may also be automatically secured at, and selectively movable between, at least a first predetermined position and a second predetermined position.

Abstract: An attachment system is provided which may include a cord, a fastener coupled to a first portion of the cord, a tensioner coupled to a second portion of the cord, and a first fitting arranged to couple either the fastener or the tensioner to the cord. The tensioner is configured to retain a third portion of the cord to maintain the tension in the cord. An attachment system may include a first working component configured to be coupled to the cord, and a first fitting arranged to couple the first working component to the cord. The first working component may have a cavity configured to receive at least a portion of the first fitting, and the first fitting may have an actively moveable element configured to retain the cord when the first fitting is positioned in the working component cavity.

Abstract: A helmet assembly is provided including a front mount configured to attach to the front of the helmet above a brim of the helmet, a mandible for protecting a portion of the user's face, a lower edge rim mounting portion such as a halo attached along the lower edge of the helmet for securing the mandible to a helmet and providing power and data conduits. The front mount provides a center top mounting arrangement that operatively connects a center top location of the face shield to a center front mount on the helmet The mount provides frontal bracket portions for mounting accessories. The helmet assembly provides a helmet shell with a curved shape having a surrounding reinforcing ridge. A reeling system is provided for adjusting front and lower chin straps. Other improvements in helmet assemblies are also disclosed.