An athletic knee protector is disclosed wherein a bowed leaf spring hinge structure is supported on load distribution pads or cuffs attached to the thigh and shin of the wearer and is spaced laterally from the lateral side of the knee to protect the knee of an athlete against injury from lateral forces...http://www.google.co.uk/patents/US4768500?utm_source=gb-gplus-sharePatent US4768500 - Knee protector
