An umbilical release mechanism (10) for disconnecting an electrical umbilical (14, 16) extending between a host and a releasable vehicle accomplishes the disconnection without imparting any force to the releasable vehicle, and without leaving pieces of the disconnection mechanism (10) in the releasable...http://www.google.com.au/patents/US5122067?utm_source=gb-gplus-sharePatent US5122067 - Umbilical release mechanism