Embodiments of a fixture secured, securable to, or integral with the outer shell of a helmet to facilitate convenient positional adjustment, attachment and removal of multiple accessories include a fixture, attachable to the helmet, for securely receiving an accessory, wherein the fixture comprises a...http://www.google.sh/patents/US7849517?utm_source=gb-gplus-sharePatent US7849517 - Mounting system for accessories on a safety helmet
