A coaxial connector with a switch has a central terminal, an outer terminal, and a switch terminal. When a plug is inserted in the coaxial connector, the central terminal is connected to the plug central terminal of the plug, while the outer terminal is connected with the plug outer terminal. At this...http://www.google.es/patents/US5989046?utm_source=gb-gplus-sharePatente US5989046 - Coaxial connector with switch
