Patent attributes
Systems and devices for protecting a user's head and for integrating accessories with a head protection system. The head protection system uses a rigid shell worn on the user's head and the rigid shell has a power/data bus located inside a preconfigured channel inside a halo housing attached to the shell. This power/data bus is accessible to peripherals using distinct connection points both inside and outside the shell. Removable protection accessories are also provided and attachable to the shell using an attachment subsystem located on the inside edge of the shell. The attachment subsystem has a number of recesses which mate with tabs on the removable protection accessories. Once attached to the shell, the removable protection accessories are lockable into place using a suitable locking mechanism. A nape protection attachment, a mandibular guard attachment, a visor attachment, and other protection accessories may be attached to the shell.