A gripping or picker device, particularly for a jacketed magnetic disk or diskette, comprising a pair of arms extending along each other and fixed with respect to a common support and having outwardly diverging cam surfaces on their distal ends to provide a throat into which an article may be thrust....http://www.google.com.au/patents/US4173427?utm_source=gb-gplus-sharePatent US4173427 - Gripping device for magnetic diskettes
