US Patent 7151234 Outlet panel for single pin connectors

A device for providing electrical power that includes one or more single pin outlets and one or more switches, each of the switches coupled to a respective one of the one or more single pin outlets. The at least one switch is actuatable by insertion of a pin in the single pin outlet. The device also includes a current device coupled to the one or more switches and configured to prevent the flow of electrical current to the single pin outlets unless all of the switches are actuated. Thus, the device is configured to prevent the flow of electrical power to all of the single pin outlets unless all of the single pin outlets have a pin properly inserted therein.