A quick release mechanism and headpiece for use with a respirator. The quick release mechanism uses a cam latch pivotably attached to a yoke to control the tension in an upper tension strap. In the latched position the upper tension strap traverses the yoke and, together with a pair of lower tension...http://www.google.es/patents/US6536435?utm_source=gb-gplus-sharePatente US6536435 - Respirator headpiece and release mechanism
