A clamping device for releasably clamping an article has a pair of arm members. Each arm member has a clamping jaw at an end thereof. The arm members are arranged with the clamping jaws in opposition and are interconnected kinematically to enable movement relative to each other in a predetermined direction...http://www.google.com/patents/US5042118?utm_source=gb-gplus-sharePatent US5042118 - Clamping device
