A safety release device for a kite line has a first fastening member with an attachment point for a first line portion and a second fastening member with an attachment point for a second line portion. In a fastened position the second fastening member engages through an aperture of the first fastening...http://www.google.com.au/patents/US7127781?utm_source=gb-gplus-sharePatent US7127781 - Release device for a kite
